Place the midpoint of the protractor on the VERTEX of the angle.
Line up one side of the angle with the zero line of the protractor (where you see the number 0).
Read the degrees where the other side crosses the number scale.
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Help me plz:))) I’ll mark u brainliest
Answer:
20, 20, 22
Step-by-step explanation:
A cereal box says that now it contains 20% more. Originally, it came with 20 ounces of cereal. How much cereal does the box come with now?
Answer:24ounces
Step-by-step explanation:
Multiply 20 ounces by .20 (The percent) then add your answer to the 20 ounces.
What are the x and y intercepts?
Answer:
x intercepts are -1, 1, and 2. y intercept is 4.
hope that helps
Step-by-step explanation:
The diagram below shows a mass suspended on a string called a pendulum.
What energy transformation occurs as the mass moves from point A to B?
A-kinetic energy is converted to potential energy
B-potential energy is converted to kinetic energy
C-chemical energy is converted to electrical energy
D-gravitational energy is converted to chemical energy
Answer:
D-gravitational energy is converted to chemical energy
Step-by-step explanation:
Please give me brainliest
A new cream was developed to reduce the irritation caused by poison ivy. To test the effectiveness, researchers put an ad online asking for volunteers to participate in the study. One hundred subjects replied, and they were informed that one group would receive the new cream and the other group would receive a cream with no active ingredient. All 100 subjects were exposed to poison ivy. Fifty were then assigned to the group with the new cream, and 50 were assigned to the group with the cream with no active ingredient. After three days, the subjects’ level of irritation was measured.
Of the 50 subjects that were assigned to the cream with no active ingredient, 15 stated they had less irritation. What is this called?
placebo
control group
placebo effect
placebo control
Answer:
c
Step-by-step explanation:
The effect because of which 15 subjects stated that they had less irritation after having cream with no active ingredient is placebo effect.
What is placebo effect?The placebo effect occurs when a person's physical or mental health appears to improve after receiving a placebo or "dummy" treatment. injections, or even sham surgery.
The placebo effect is caused by an individual's belief in the benefits of the treatment and the expectation that it will make them feel better, rather than by the properties of the placebo.
Given,
50 subjects were assigned to the cream with no active ingredient, 15 stated they had less irritation.
The cream with no active ingredient is placebo, and this effect is called placebo effect.
Hence, 15 subjects stated that they had less irritation is a result of placebo effect.
Learn more about placebo effect here:
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the cost for 4 cellphone cases is $36 what is th e cost for 24 cases what is the cost for 20 cases plz help
24 cases would be 104 dollars and 20 would be 80 dollars mark brainliest please
Jorge plans to save the same amount of money for 6 weeks. He wants to buy a new tent for $110 and a camping pillow for $34. How much money should he save each week to buy both items?
Find the percent increase. Round to the nearest percent.
From 13 friends to 19 friends
Answer:
15
Step-by-step explanation:
Tom and Jerry were asked to solve the equation - 2y + 10 = -16. Tom wrote
y = 13 but Jerry wrote 13 = y. Tom is correct, but Jerry is wrong.
A.True
B.False
Answer:
false
Step-by-step explanation:
Both are correct
-2(13)+10=-16
both their answers satisfy the equation
The circumference of a circle is 70 cm. Find the area of the circle, rounding your
answer to 3 significant figures.
Write the following expression in algebraic form.
cos(arcsin 3x)
Answer:
Step-by-step explanation:
If we consider a triangle with the length of the hypotenuse being equal to 1 and the length of the opposite side = 3x.
However, recall that in a right-angle triangle;
SIne = opposite/hypothenuse
Thus; let the angle facing the opposite be y
Then;
SIn y = 3x/1
Sin y = 3x
Thus, y = arcsin (3x)
Now; to find cos(arcsin 3x)
Recall that:
Cosine = adjacent/hypotenuse
Now, using Pythagoras rule;
[tex]\mathsf{Adjacent \ side = \sqrt{(hypotenuse)^2 -(opposite^2)}}[/tex]
[tex]\mathsf{Adjacent \ side = \sqrt{(1)^2 -(3x^2)}}[/tex]
[tex]\mathsf{Adjacent \ side = \sqrt{1 -9x^2}}[/tex]
cos(arcsin 3x) = cos y = adjacent side/hypotenuse = [tex]\dfrac{\sqrt{1 -9x^2}}{1}[/tex]
cos(arcsin 3x) = [tex]\dfrac{\sqrt{1 -9x^2}}{1}[/tex]
An automobile costs $22,750 after a 30% discount. What was the original price of the automobile? (Do not enter the $ sign in your answer.)
Answer:
32,500
Step-by-step explanation:
22,750 = .70x. (Paid 70% since it was 30% discount)
divide both sides by .70
x = 32,500
margo borrows $900.00 and must pay it back with 6% interest after 7 months. what is the total amount margo will pay back ?
Answer:
$954
Step-by-step explanation:
6% = 0.06
Adding 1 to the interest makes it so it’s added to the original amount.
$900 x 1.06 = $954
You have $25 to buy a gift for your friend. If the gift you buy is $22 plus 6% tax, how much change will you receive?
Answer:
24.7
Step-by-step explanation:
Please Help! Given triangles ABC and DEF, which statement explains a way to determine if the two figures are similar?
Verify corresponding pairs of angles are congruent by translation.
Verify corresponding pairs of sides are congruent by dilation.
Verify corresponding pairs of angles are congruent by dilation.
Verify corresponding pairs of sides are congruent by translation.
Answer:
A- Verify corresponding pairs of ANGLES are congruent by TRANSLATION.
Step-by-step explanation:
You find the congruent pairs by the angles, not the sides. Because the sides can be the same size but the angles can possibly not be congruent so you check by the angles. And Translation because you don't change the size of the object to see if it's congruent.
Similar triangles may or may not have congruent side lengths.
The true statement is: (a) verify corresponding pairs of angles are congruent by translation.
For the two triangles to be similar, the side lengths of both triangles may or may not be equal.
This means that: options (b) and (d) are not true
Translation does not alter side lengths and angles, while dilation alters measure of angles.
This means that:
The pair of corresponding angles should be checked by translating the triangles.
Hence, the true statement is: (a)
Read more about similar and congruent triangles at:
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Help please
........................
Answer:
8. (2, 0)
9. (3, 3)
10. equilateral
Please help I do not understand this and I would like some help to understand this.
Answer:
show the top plzzz
Step-by-step explanation:
Calculate: 8 hours (hrs) = minutes
Answer:
480
Step-by-step explanation:
just looked up 8 hours to minuets
Answer:
the answer is 480 minutes :)
2.42 × 12 It’s nice and easy, 100 pts and brainliest. Ok I know most of you searched it up on the calc so don’t even. Enjoy.
Answer:
29.04
Step-by-step explanation:
i tried doing it without a calculator LOLLL
. For every 3 lemons Chrissy buys at a farm stand,
the total cost increases by $1.80.
The constant of proportionality is ?
An equation that relates the total cost, y, and the
number of lemons, x, is y = ? x.
Use the equation you wrote to complete the table.
Step-by-step explanation:
For every 3 lemons Chrissy buys at a farm stand, the total cost increases by $1.80.
cost or 1 lemon = 1.8/3 = $0.6
It means the constant of proportionality is 0.6
If there are x no of lemons, then the total cost will be given by :
y = 0.6x
Hence, this is the required solution.
Answer:
The answer is 0.6
Step-by-step explanation:
Will give you Brainliest if your provide a valid answer and explanation!
Please don't steal my points, this is graded and really need help :/
Q: The wheels on Parker's bike have a circumference of about 50 feet. How far does the bike travel as the wheel makes 3 complete rotations? Remember to explain your answer!
Answer:
150 feet i think
Step-by-step explanation:
50*3=150
A family has bags of popcorn in their cabinet. Each bag of popcorn has kernels in it. How many kernels of popcorn are in the cabinet?
Answer:
can you screen shot the question please
Randomly selected 150 student cars have ages with a mean of 7.3 years and a standard deviation of 3.6 years, while randomly selected 65 faculty cars have ages with a mean of 5.9 years and a standard deviation of 3.5 years.
1. Use a 0.01 significance level to test the claim that student cars are older than faculty cars.
The test statistic is
Is there sufficient evidence to support the claim that student cars are older than faculty cars?
A. Yes
B. No
2. Construct a 99% confidence interval estimate of the difference μ1−μ2, where μ1 is the mean age of student cars and μ2 is the mean age of faculty cars. <(μ1−μ2)
Answer:
1) B. NO
2) -0.049 < (μ1 − μ2) > 2.751
Step-by-step explanation:
Data of student cars;
Sample size; n1 = 150
Sample mean; x1¯ = 7.3
Sample standard deviation; s1 = 3.6
Faculty cars data;
Sample size; n2 = 65
Sample mean; x2¯ = 5.9
Sample standard deviation; s2 = 3.5
The hypotheses is defined as;
Null hypothesis; H0: μ1 = μ2
Alternative hypothesis; Ha: μ1 > μ2
1) Formula for test statistic for 2 sample test is;
z = (x1¯ - x2¯)/√[((S1)²/n1) + ((S2)²/n2)
z = (7.3 - 5.9)/√[((3.6)²/150) + ((3.5)²/65)
z = 1.4/√((12.96/150) + (12.25/65))
z = 1.4/√0.2749
z = 1.4/0.5243
z = 2.67
From online p-value from z-score calculator attached, using z = 2.67, one tailed test, significance level = 0.01,we have;
P-value = 0.003793
This is less than the significance level, thus we will reject the null hypothesis and conclude that there is no sufficient evidence to support the claim that student cars are older than faculty cars.
2) Formula for the confidence interval is;
CI = μ1−μ2 = (x1¯ - x¯2) ± z√[((S1)²/n1) + ((S2)²/n2)
At significance level of 99%, z-score value is 2.576
Thus;
μ1−μ2 = (7.3 - 5.9) ± 2.576√[((3.6)²/150) + ((3.5)²/65)
μ1 − μ2 = 1.4 ± 2.576(0.5243)
-0.049 < (μ1 − μ2) > 2.751
A fine fabric was selling for $ 10.50 a yard. Joni bought 2 1/3 yards. How much did she spend?
Answer:
$24.50
Step-by-step explanation:
10.50 * 2 1/3 = 24.50
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Help me with this question please give The Plan and Proof FIRST ANSWER GETS BRAINLIST
The two triangles are congruent by ASA congruence
angle a is equal to angle c as given
angle 1 is equal to angle 2 because they are vertically opposite
ab and bc are equal because b is the mid point of ac
so therfore abd is congruent to cbe by asa congruence
and by cpct we will get that
bd is equal to be
ad is equal to ec
A decimal fraction in which a figures is repeated and indefinitely
Answer:
A repeating decimal or recurring decimal is decimal representation of a number whose digits are periodic (repeating its values at regular intervals) and the infinitely repeated portion is not zero.
Step-by-step explanation:
Use partial products to divide 528 ÷ 24. Enter your answer in the box.
Answer:
it 22
Step-by-step explanation:
hope it helped
The value of 524 divided by 24 is 22.
Divide the leftmost digit of the dividend (528) by the divisor (24).
Since 5 is less than 24, we consider the next digit as well, resulting in 52.
Now, divide 52 by 24. The quotient is 2, and the remainder is 4. Write down the quotient above the line.
Multiply the quotient (2) by the divisor (24), which gives us 48.
Subtract the product (48) from the previous step from the 52. The result is 4.
Bring down the next digit of the dividend (8) next to the remainder (4), resulting in 48.
Divide 48 by 24.
The quotient is 2, and there is no remainder.
Write down the quotient (2) above the line.
Therefore, the result of 528 ÷ 24 using partial products is 22.
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Complete each congruence. Which is the correspondent side indicated in this picture.
Answer:
Option A
Step-by-step explanation:
Since they are congruent triangles, all the lengths are the same, but it’s just that triangle XYZ is flipped upside down. So if you flip it up to match triangle RTS, then XY is the same as RT.
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PLEASE HELP MEEEEE!! WILL MARK BRAINLIST!!
The dot plots show the number of vehicles sold by salespeople at a dealership during two months. Which statement is best supported by the information in the dot plots?
A. The range of the number of vehicles sold is greater in March than in April.
B. The range of the number of vehicles sold is greater in April than in March.
C. The range of the number of vehicles sold each month cannot be determined, because the number of salespeople is different for each month.
D. The range of the number of vehicles sold is the same for each month.
Four times the difference of a number and nine is -30 ."
Answer:
3/2
Step-by-step explanation:
Solve 4 (x - 9) = -30.
4x - 36 = -30
4x = 6
x = 6/4 = 3/2