Answer:
Step-by-step explanation:
its on satuday
6/7 .r = 3/4 write it as a fraction or as a whole or a mixed number
The solution for "r" is 21/24, which can be simplified to 7/8. The answer can be written as a fraction of 7/8.
To solve for "r" in the given equation, we can use algebraic manipulation.
First, we can multiply both sides of the equation by the reciprocal of 6/7, which is:
7/6: 6/7 · r = 3/4
7/6 · 6/7 · r = 7/6 · 3/4
r = 21/24.
Thus, the solution for "r" is 21/24, which can be simplified to 7/8.
Therefore, the answer can be written as a fraction of 7/8.
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HELP CAN SOMEONE ANSWER THIS
Answer:
JLK = PRQ
Step-by-step explanation:
We already know that JL = QR and KL = PR.
If we know the angle between the two sides is equal or if the other side lengths are equal, then that would prove the two triangles to be equal.
Since the option for the two other side lengths (JK = PQ) to be equal is not listed, then the option that shows the angles are equal is the correct answer.
Since both JKL and PRQ are between the line segments already said to be equal, the answer is JLK = PRQ
Answer:
C. This would be a true statement due to the fact the to sides touch are equal. The sides are going to come at the same angle giving you a SAS which is possible to show for congruent triangles.
Two mechanics worked on a car. The first mechanic charged $75
per hour, and the second mechanic charged $95
per hour. The mechanics worked for a combined total of 20
hours, and together they charged a total of $1800
. How long did each mechanic work?
The first mechanic worked for 12 hours, and the second mechanic worked for 8 hours.
Let's assume the first mechanic worked for x hours. Since the first mechanic charged $75 per hour, their earnings can be represented as 75x dollars.
Similarly, the second mechanic worked for (20 - x) hours, and at a rate of $95 per hour, their earnings can be represented as 95(20 - x) dollars.
According to the problem, the combined earnings of both mechanics are $1800. Therefore, we can write the equation:
75x + 95(20 - x) = 1800
Simplifying this equation, we get:
75x + 1900 - 95x = 1800
-20x = -100
x = 5
Substituting x back into the equation, we find that the first mechanic worked for 5 hours, and the second mechanic worked for (20 - 5) = 15 hours.
Therefore, the first mechanic worked for 5 hours, and the second mechanic worked for 15 hours.
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how many pattern block rhombuses would 4 triangles create?
With 4 triangles, you can create a total of 3 pattern block rhombuses, depending on their arrangement.
To determine the number of pattern block rhombuses that can be created using 4 triangles, let's start by understanding the properties and arrangement of these shapes.
Pattern block rhombuses are a type of geometric shape commonly used in mathematics education. Each rhombus is made up of 2 triangles, specifically two congruent (equal) acute triangles. The triangles are placed together in a specific way to form the rhombus shape.
When 4 triangles are used, they can be arranged in different configurations to create different numbers of pattern block rhombuses. Let's explore the possibilities:
Arrangement 1:
In this arrangement, you can create 2 pattern block rhombuses. The triangles are placed side by side, with two triangles forming one rhombus, and the other two triangles forming another rhombus.
Arrangement 2:
In this arrangement, you can create 1 pattern block rhombus. The triangles are placed on top of each other, forming a larger triangle. Since a pattern block rhombus requires two acute triangles, only one rhombus can be formed in this case.
So, with 4 triangles, you can create a total of 3 pattern block rhombuses, depending on how the triangles are arranged.
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An office manager needs to cover the front face of a rectangular box with a label for shipping. the vertices of the face are (-5, 8), (3, 8), (-5, -4), and (3, -4). what is the area, in square inches, of the label needed to cover the box?
98 in2
48 in2
40 in2
20 in2
The area of the label needed to cover the box is 96 square inches. None of the provided answer options (98 in², 48 in², 40 in², or 20 in²) match the calculated area of 96 in².
We must determine the area of the rectangle formed by the provided vertices in order to determine the size of the label required to completely cover the front face of the rectangular box.
Let's label the vertices as follows:
A = (-5, 8)
B = (3, 8)
C = (-5, -4)
D = (3, -4)
The formula to calculate the area of a rectangle given the coordinates of its vertices is:
Area = |(x2 - x1) * (y2 - y1)|
Using the given coordinates, we can calculate the area:
Area = |(3 - (-5)) * (8 - (-4))|
Simplifying the expression:
Area = |(3 + 5) * (8 + 4)|
Area = |8 * 12|
Area = 96 square units
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what is $2^{-3}\cdot 3^{-2}$.
Answer:
[tex]\frac{1}{72}[/tex]
Step-by-step explanation:
[tex]2^{-3}\cdot 3^{-2}=\frac{1}{2^3}\cdot\frac{1}{3^2}=\frac{1}{8}\cdot\frac{1}{9}=\frac{1}{72}[/tex]
Si 3,390 kg de plomo ocupan un volumen de 0.3m3. Encuentra la densidad del plomo
The density of lead is 11.3 kg/m³.
The density of lead can be calculated by using the formula D = M/V, where D represents density, M represents mass and V represents volume. The density of lead is the ratio of the mass of lead to the volume occupied by it.
Density of Lead:
Given that the lead has a mass of 3.390 kg and occupies a volume of 0.3 m³.
Density of Lead (D) = Mass of Lead (M) / Volume of Lead (V)D = 3.390 kg / 0.3 m³D = 11.3 kg/m³
Therefore, the density of lead is 11.3 kg/m³.
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If PQ¯ is tangent to circle R at point Q, and PS¯ is tangent to ⊙R at point S, what is the perimeter of quadrilateral PQRS?
The perimeter of PQRS would depend on the lengths of the tangent segments and the lengths of the intercepted arcs. Without specific measurements, we cannot determine the precise perimeter.
To determine the perimeter of quadrilateral PQRS, we need more information about the lengths of the sides or the relationship between the sides and angles. Without specific measurements or additional details, we cannot calculate the exact perimeter of the quadrilateral.
However, we can provide some general information.Since PQ¯ is tangent to circle R at point Q, it is perpendicular to the radius drawn from the center of the circle to point Q. Similarly, PS¯ is tangent to circle R at point S, so it is perpendicular to the radius drawn to point S.
The quadrilateral PQRS is formed by the tangents PQ¯ and PS¯ along with the two arcs intercepted by these tangents on the circle R.
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The new corporate logo created by the design engineers at Magic Motors is shown in the accompanying diagram. If the measure of arc AC = 80°, what is the mLB?
The measure of angle LB is 40°.
To find the measure of angle LB, we can use the fact that the measure of an inscribed angle is half the measure of its intercepted arc.
In this case, we are given that the measure of arc AC is 80°, so we can conclude that the measure of angle LB is half of that.
Since angle LB is an inscribed angle that intercepts arc AC, we can write the equation:
mLB = 1/2 [tex]\times[/tex] mAC
Substituting the given value, we have:
mLB = 1/2 [tex]\times[/tex] 80°
mLB = 40°
Therefore, the measure of angle LB is 40°.
In the context of the corporate logo, angle LB represents a portion of the circular shape of the logo.
By knowing the measure of arc AC, we can determine the measure of angle LB, which helps in accurately representing the logo in terms of angles and proportions.
This information is crucial for design and branding purposes, as it ensures consistency and precision in the presentation of the logo across various media and materials.
Overall, understanding the measures of angles and arcs in the logo design allows for effective communication and replication of the logo's visual elements, ensuring brand recognition and consistency in its representation.
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help please its due in 50 minutes ill mark brainliest answer too and no need to show work
The function f(x) and the inverse function h(x) for which the function f(x) is defined by the values (0,3), (1,1), (2,-1) are f(x) = 3 -2x and h(x) = [tex]\frac{3 - x}{2}[/tex]
What is a Function?A function is a rule which takes each member x of a set and assigns, or maps it to the same value y known at its image.x → Function → yA letter such as f, g or h is often used to stand for a function.
The Function which squares a number and adds on a 3, can be written as f(x) = x2+ 5.
Let the linear function be f(x) = mx + cwhen x = 0, f(x) = 33 = m(0) + cTherefore, c = 3
when x = 1, f(x) = 11 = m(1) + c but c = 31 = m + 3
Therefore m = 1 - 3, which is -2
The linear equation f(x) = 3 - 2x
To solve for inverse function h(x)let y = 3 - 2xmaking x the subject of the equation2x = 3 - yx =[tex]\frac{3 - y}{2}[/tex]replacing x with h(x) and y with x, we haveh(x) = [tex]\frac{3 - x}{2}[/tex]
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Which of the following lists of ordered pairs is a function?
The list of ordered pairs that is a function is Option D.
What is a Math Function?A math function is a relationship that assigns a unique output value to each input value. It describes how one quantity depends on another.
Functions are commonly represented using mathematical notation, such as f(x), and they play a fundamental role in various areas of mathematics and its applications.
A function is a relation in which one input (x-value) is assigned to exactly one output (y-value).
Since option D's x-values do not repeat, then it is a function.
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What’s the value of each variable in the parallelogram
Answer:
m = 5
n = 12
Step-by-step explanation:
The parallel sides of a parallelogram are equal.
m +1 = 6 so m = 6 -1 = 5, and n = 12
Answer:
m = 5 , n = 12
Step-by-step explanation:
the opposite sides of a parallelogram are congruent , then
m + 1 = 6 ( subtract 1 from both sides )
m = 5
and
n = 12
Pls help
Which statement is true?
A. As x increases, the rate of change of f(x) exceeds the rate of change of g(x).
B. As x increases, the rate of change of g(x) exceeds the rate of change of f(x).
C. On every interval of x-values, the average rate of change of g(x) exceeds the average rate of change of f(x).
D. On every interval of x-values,
the average rate of change of f(x) exceeds the average rate of change of g(x).
The statement that is true is as x increases, the rate of change of g(x) exceeds the rate of change of f(x). Option B
How to determine the statementFirst, let us determine the derivatives Let's first of the functions f(x) and g(x) to compare their rates of change:
The functions are given as;
f(x) = 1/50(3)
g(x) = 1/5(x²)
Since the derivative of a constant is zero, f'(x) = 0.
g'(x) = 2/5x
Then, we can say that the rate of change of g(x) increases faster than the rate of change of f(x) as x increases.
The rate of change of g(x) (2/5x) will grow as x increases, while the rate of change of f(x) stays constant.
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Find the measure of the indicated arc
Answer:
80
Step-by-step explanation:
Var(X), where X is any random variable, is equals to:
Select one:
a. E(X2)-(E(X))2
b. None of the above
c. (E(X))2
d. E(X2)
e. E(X2)+(E(X))2
Note: Answer E is NOT the correct answer. Please find the correct answer. Any answer without justification will be rejected automatically.
The correct answer is option (a): Var(X) = E(X^2) - (E(X))^2.
The variance of a random variable X is defined as the average of the squared differences between each value of X and its expected value (E(X)). Mathematically, it can be expressed as Var(X) = E((X - E(X))^2).
Expanding the squared term, we have Var(X) = E(X^2 - 2XE(X) + (E(X))^2). Distributing and rearranging, we get Var(X) = E(X^2) - 2E(X)E(X) + (E(X))^2. Simplifying, we obtain Var(X) = E(X^2) - (E(X))^2.
NO LINKS!! URGENT HELP PLEASE!!
Please help with #3
Answer: See the flowchart proof below.
Explanation:
The given info is indicated by the marked angles. We also use the reflexive property to say that BG = BG. After that we use the ASA (angle side angle) property to prove the triangles are congruent. The triangles are mirrored clones of one another. The mirror line is segment BG.
A flowchart proof that proves that the two triangles are congruent is shown in the image below.
What are the properties of similar triangles?In Mathematics and Geometry, two triangles are said to be similar when the ratio of their corresponding side lengths are equal and their corresponding angles are congruent.
In this context, we can prove that triangle BIG is congruent with triangle BAG by completing the two-column proof shown above with the following reasons:
Statements Reasons
∠IBG ≅ ∠ABG Given
∠IGB ≅ ∠AGB Given
BG ≅ BG Reflexive property
ΔBIG ≅ ΔBAG ASA Congruence
Based on the angle, side, angle (ASA) similarity theorem, we can logically deduce that triangle BIG and triangle BAG are both congruent.
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Mrs. Rodriquez has 24 students in her class. Ten of the students are boys. Jeff claims that the ratio of boys to girls in this class must be 5:12. What is Jeff’s error and how can he correct it?
Jeff found the ratio of the number of boys to the total number of students. He needed to first find that there are 14 girls to get a ratio of 10:14 or 5:7.
Jeff found the ratio of the number of boys to the total number of students. He needed to first find that there are 14 girls. The ratio would be 14:10 or 7:5.
Jeff did not write the ratio in the correct order. He should have written it as 24:10.
Jeff did not write the ratio in the correct order. He should have written it as 12:5.\
Step-by-step explanation:
24-10=14. So the girls are 14 the ratio is 10:14 =5:7
Find the measure of the indicated angle.
99⁰
96⁰
98⁰
92°
L
120°
K
N
M
64
Answer:
? = 92°
Step-by-step explanation:
the chord- chord angle ? is half the sum of the measures of the arcs intercepted by the angle and its vertical angle, that is
? = [tex]\frac{1}{2}[/tex] (LM + AK) = [tex]\frac{1}{2}[/tex] (120 + 64)° = [tex]\frac{1}{2}[/tex] × 184° = 92°
I NEED HELP 30 POINT!!
Answer:
35
Step-by-step explanation:
You can easily graph this in desmos for a visual understanding.
The slope of a line is received by (y2-y1)/(x2-x1). Assuming that Days is X and the cost is Y, we get (160-90)/(4-2), and it makes 70/2, which equates out to 35. Because the prices become more and more expensive, the slope is positive 35.
Hcf of two expressions is (x + 1) and lcm is (x^3+ x^2 – x – 1). if one expression is (x^2 - 1), then what is the second expression?
After solving by formula the second expression is y = [tex](x^2 + 1)[/tex].
We know that the product of the HCF and LCM of two numbers is equal to the product of the numbers themselves. In this case, we can apply the same principle to expressions:
HCF * LCM = (x + 1) * [tex](x^3+ x^2 - x - 1)[/tex]
the first number is [tex]x^{2} -1\\[/tex] and let the second number is y
Therefore, we can set up the equation:
(x + 1) * [tex](x^3+ x^2 - x - 1)[/tex] = [tex]x^{2} -1\\[/tex] * y
[tex]x^4 + x^3 + x^2 - x^3 - x^2 + x - x - 1 = x^2 - 1 * y[/tex]
Simplifying:
[tex]x^4 - 1 = (x^2 - 1) * y[/tex]
Now, we can divide both sides by [tex](x^2 - 1)[/tex]:
[tex](x^4 - 1) / (x^2 - 1) = y[/tex]
Notice that [tex](x^2 - 1)[/tex]can be factored as (x + 1)(x - 1). Therefore, we can simplify further:
[tex](x^4 - 1) / ((x + 1)(x - 1)) = y[/tex]
The expression [tex](x^4 - 1)[/tex] can be factored using the difference of squares:
[tex](x^4 - 1) = (x^2 + 1)(x^2 - 1)[/tex]
[tex][(x^2 + 1)(x^2 - 1)] / ((x + 1)(x - 1)) = y[/tex]
Now, we can cancel out the common factor [tex](x^2 - 1)[/tex] from the numerator and denominator:
[tex]y =(x^2 + 1)[/tex]
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will give 100 points The box plots display measures from data collected when 15 athletes were asked how many miles they ran that day.
A box plot uses a number line from 0 to 13 with tick marks every one-half unit. The box extends from 1 to 3.5 on the number line. A line in the box is at 2. The lines outside the box end at 0 and 5. The graph is titled Group A's Miles, and the line is labeled Number of Miles.
A box plot uses a number line from 0 to 13 with tick marks every one-half unit. The box extends from 1 to 5 on the number line. A line in the box is at 2.5. The lines outside the box end at 0 and 11. The graph is titled Group C's Miles, and the line is labeled Number of Miles.
Which group of athletes ran the least miles based on the data displayed?
Group A, with a median value of 2 miles
Group C, with a median value of 2.5 miles
Group C, with a narrow spread in the data
Group A, with a wide spread in the data
Triangle 1 103, 32 Triangle 2 103,25 are these Triangle similar
Triangle 1 and Triangle 2 are not similar triangles.
To determine if two triangles are similar, we need to compare their corresponding sides and angles. In this case, we have Triangle 1 with vertices (10, 3) and (32, 10), and Triangle 2 with vertices (10, 3) and (25, 10). Let's compare the corresponding sides and angles:
1. Side lengths:
The length of side AB in Triangle 1 is [tex]√[(32 - 10)^2 + (10 - 3)^2] = √[22^2 + 7^2] = √(484 + 49) = √533.[/tex]
The length of side AB in Triangle 2 is [tex]√[(25 - 10)^2 + (10 - 3)^2] = √[15^2 + 7^2] = √(225 + 49) = √274.[/tex]
2. Angle measurements:
To compare the angle measurements, we need to find the slopes of the sides of the triangles.
The slope of side AB in Triangle 1 is (10 - 3)/(32 - 10) = 7/22.
The slope of side AB in Triangle 2 is (10 - 3)/(25 - 10) = 7/15.
Based on the side lengths and angle measurements, we can see that the side lengths are different and the slopes of the sides are different. Therefore, Triangle 1 and Triangle 2 are not similar triangles.
Similar triangles have corresponding sides that are proportional in length and corresponding angles that are congruent. In this case, the side lengths and angles of Triangle 1 and Triangle 2 are not proportional or congruent, indicating that the triangles are not similar.
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if there are 200 high school students in the district, how many would you expect to be in chemistry?
If there are 200 high school students in the district, the number of high school students expected to be in Chemistry is 60 because the percentage who offer Chemistry in the district is 30%.
How the number is determined:The number of high school students who offer Chemistry in the district can be determined by multiplying the total number of high school students and the percentage of students who offer Chemistry.
The result of a multiplication operation (multiplicand and multiplier), which is one of the basic mathematical operations, is known as the product.
The total number of high school students in the district = 200
The percentage of students who offer Chemistry in the district = 30%
The number of students likely to be offering Chemistry in the district = 60 (200 x 30%).
Thus, we can conclude that 60 high school students are in Chemistry based on the Chemistry percentage.
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Complete Question:The percentage of high school students in the district who offer Chemistry is 30%. If there are 200 high school students in the district, how many would you expect to be in Chemistry?
For which values is this expression undefined?
Answer:
x=3
Step-by-step explanation:
You can get the answer by substituting the value of x in the equations, your aim is to find a number that will make both equations equal zero.
1). From a position 150 ft above the ground, an observer in a build- ing measures angles of depression of 12 and 34 to the top and bottom, respectively, of a smaller building, as in the picture on the right. Use this to find the height h of the smaller building.
We can solve for d = 150 / (tan(34) - tan(12)) Once we have the value of d, we can substitute it back into the equation h = d * tan(12) to find the height h of the smaller building.
To find the height h of the smaller building, we can use trigonometric ratios and the concept of angles of depression.
Let's denote the height of the smaller building as h. We are given that the observer in the larger building measures angles of depression of 12 degrees and 34 degrees to the top and bottom of the smaller building, respectively.
From the given information, we can form a right triangle with the vertical distance between the observer and the smaller building as the opposite side and the horizontal distance between the observer and the smaller building as the adjacent side.
Using trigonometric ratios, we can set up the following equations:
For the angle of depression of 12 degrees:
tan(12) = h / d
For the angle of depression of 34 degrees:
tan(34) = (h + 150) / d
Here, d represents the horizontal distance between the observer and the smaller building.
We can solve these two equations simultaneously to find the values of h and d.
From the equation for the angle of depression of 12 degrees, we can rewrite it as:
h = d * tan(12)
Substituting this expression for h in the equation for the angle of depression of 34 degrees, we get:
tan(34) = (d * tan(12) + 150) / d
Now, we can solve this equation for d. Rearranging the equation, we have:
d * tan(34) = d * tan(12) + 150
Simplifying further:
d * (tan(34) - tan(12)) = 150
Finally, we can solve for d:
d = 150 / (tan(34) - tan(12))
Once we have the value of d, we can substitute it back into the equation h = d * tan(12) to find the height h of the smaller building.
Note: To obtain an actual numerical value for h, we need the precise values of the tangent of 12 degrees and 34 degrees.
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What is the most likely reason that Sora lists the
activities of customers going through self-checkout?
to prove the claim that customers are trained
enough to get paid for self-checkout
2
O to prove the claim that self-checkout is difficult
O to prove the claim that cashiers' duties are as simple
as self-checkout routines
O to prove the claim that self-checkout is eliminating
jobs
The most likely reason that Sora lists the activities of customers going through self-checkout is to prove the claim that self-checkout is eliminating jobs.
By observing and documenting the activities of customers using self-checkout, Sora may be gathering evidence to support the argument that self-checkout systems are replacing the need for human cashiers and leading to job loss in the retail industry.
By highlighting the tasks that customers can now perform independently, Sora may be emphasizing the efficiency and convenience of self-checkout systems, which can potentially lead to the reduction of cashier positions.
It's important to note that without more context, we cannot definitively determine Sora's exact intentions or motivations. However, based on the given options and the mention of activities related to self-checkout, the claim that self-checkout is eliminating jobs appears to be the most plausible reason for listing the activities of customers going through self-checkout.
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22. In a study was done on 136 subjects with syncope or near syncope were studied. Syncope is the temporary loss of consciousness due to a sudden decline in blood flow to the brain. Of these subjects, 75 also reported having cardiovascular disease. Construct a 90,95, 99 percent confidence interval for the population proportion of subjects with syncope or near syncope who also have cardiovascular disease.
The main answer is that the confidence intervals for the population proportion of subjects with syncope or near syncope who also have cardiovascular disease, at 90%, 95%, and 99% confidence levels, are as follows:
90% Confidence Interval: Approximately 51.84% to 70.53%
95% Confidence Interval: Approximately 49.77% to 72.60%
99% Confidence Interval: Approximately 46.48% to 76.89%
In the study, out of the 136 subjects with syncope or near syncope, 75 reported having cardiovascular disease.
To construct the confidence intervals, we can use the formula for a proportion's confidence interval. The formula is based on the normal distribution assumption when sample size is large enough, which is satisfied here.
By plugging in the sample proportion (75/136) and the appropriate critical values based on the desired confidence level (1.645 for 90%, 1.96 for 95%, and 2.576 for 99%), we can calculate the lower and upper bounds for each confidence interval.
These confidence intervals provide an estimate of the likely range within which the true population proportion lies.
For example, with 95% confidence, we can say that we are 95% confident that the true proportion of subjects with syncope or near syncope who also have cardiovascular disease falls between approximately 49.77% and 72.60%.
The wider the confidence interval, the lower the precision of the estimate, but the higher the level of confidence.
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what is the value of m
Answer:
114°--------------------------
Angle G is central angle and angle E is inscribed angle, both with same endpoints.
According to the inscribed angle theorem the inscribed angle is half of the central angle.
Hence the central angle G measures:
m∠G = 2(m∠E)m∠G = 2(57°)m∠G = 114°
What are the values of x and y?
A) x = 18√3; y = 9√3
B) x = 9; y = 9√3
C) x = 9√3; y = 9
D) x = 9√2; y = 9
The values of x and y are 9√3 and 9. Thus, option C is the answer.
From the figure, we know that angle A = 60°, angle C = 30° and side AC =18 units.
We have to use trigonometric ratios to find the values of x and y.
sin30° = Opposite side/Hypotenuse
But, we also know that sin30° = 1/2
Substituting the value in the above equation, we get
1/2 = y/18
Thus, the value of y = 18/2 = 9.
Now, sin60° = Opposite Side/ Hypotenuse
sin60° = √3/2
Substituting the value, we get
√3/2 = x/18
Thus, x = 9√3.
Therefore, the values of x and y in the given triangle are 9√3 and 9.
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B
C
W
A
E
Use the given diagram to answer the question,
Which line is the intersection of two of the planes
shown?
Which line intersects one of the planes shown?
Which line has points on three of the planes shown?
G
The line that intersects two of the planes is : Line X
The line that intersects one of the planes is : Line Z
The line that that has points on three of the planes shown is Line Y
How to find the intersection line on the plane?From this figure you can see that there are 3 different levels and 3 different lines. One line intersects two planes (line X), another line intersects only one plane (line Z). Line Y, on the other hand, has points in all three planes.
A line y has points A and B in all three planes.
A plane is simply a plane that can be intersected by a straight line connecting any two points on the plane.
Therefore, we can conclude from the figure
A line that intersects two planes is: line x
A line that intersects one of the planes is: line Z
A line with points on the three planes shown is Line Y.
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