B) 3 is the ratio of his speed and his car's fuel economy.
What is speed?Velocity is the pace and direction of an object's movement, whereas speed is the time rate at which an object is traveling along a path. In other words, velocity is a vector, whereas speed is a scalar value.
Calculation:[tex]\frac{speed}{fuel economy} =\frac{\frac{60 miles}{hour} }{\frac{20 miles}{gallon} } \\\frac{speed}{fuel economy}={\frac{60 miles}{hour} .{\frac{gallon}{20 miles} }\\[/tex]
[tex]\frac{speed}{fuel economy}=\frac{3 gallons}{hour}[/tex]
Inserting this 3 in the given equation 15 = 3t and including each term, we see the units cancel out:
[tex]15 gallons = \frac{3 gallons}{hour}.t(hours)[/tex]
3 is the ratio of his speed and his car's fuel economy.
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If a1 =2 and an =-2an-1 then find the value of a6
The value of the sixth term of the sequence will be negative 64.
What is the sequence?A sequence is a list of elements that have been ordered in a sequential manner, such that members come either before or after.
If the first term (a₁) is 2 and the relation is aₙ = -2aₙ₋₁.
The second term is given as,
a₂ = -2a₂₋₁
a₂ = -2a₁
a₂ = -2 x 2
a₂ = - 4
The third term is given as,
a₃ = -2a₃₋₁
a₃ = -2a₂
a₃ = -2 x ( - 4)
a₃ = 8
The fourth term is given as,
a₄ = -2a₄₋₁
a₄ = -2a₃
a₄ = -2 x 8
a₄ = - 16
The fifth term is given as,
a₅ = -2a₅₋₁
a₅ = -2a₄
a₅ = -2 x (- 16)
a₅ = 32
The sixth term is given as,
a₆ = -2a₆₋₁
a₆ = -2a₅
a₆ = -2 x 32
a₆ = - 64
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Answer: -64
Step-by-step explanation:
jamal wants to estimate the distance across the gorge shown in the diagram below. He stands at point Y and locates a tree at point X directly across the gorge to the north. He then walks west along the gorge 500ft and marks point A. After walking another 500ft in the same direction, he turns 90 degrees and walks south, perpendicular to the gorge. He stops when his location appears to form a straight line with points A and X. Jamal measures the distance BC as 327 ft.
Answer:
Step-by-step explanation:
To estimate the distance across the gorge, Jamal can use the following steps:
First, he can draw a diagram to represent the situation. He can label points Y, X, A, and B on the diagram and draw the lines YX and AB to represent the locations of the tree and the points he marked.
Next, he can use the Pythagorean Theorem to find the distance AC. The theorem states that in a right triangle, the square of the length of the hypotenuse (the side opposite the right angle) is equal to the sum of the squares of the other two sides. In this case, the side AC is the hypotenuse, and the sides YA and YC are the other two sides. Therefore, he can use the theorem to find AC as follows:
AC^2 = YA^2 + YC^2
He knows the values of YA (500ft) and YC (327ft), so he can substitute these values into the equation and solve for AC:
AC^2 = 500^2 + 327^2
AC^2 = 250000 + 107649
AC^2 = 357659
AC = √357659
AC ≈ 597.56 ft
Finally, he can use the distance AC to estimate the distance across the gorge. The distance across the gorge is equal to the distance from X to Y, which is equal to the sum of the distances from X to A and A to Y. Therefore, he can estimate the distance across the gorge as follows:
distance across gorge = XA + AY
distance across gorge = AC + YA + YC
distance across gorge = 597.56 ft + 500 ft + 327 ft
distance across gorge ≈ 1424.56 ft
This is Jamal's estimate of the distance across the gorge.
By first rounding both numbers to 1
significant figure, estimate the answer to
12 x 478
Answer:
Step-by-step explanation:
Rounding to 1 sig fig:
12 becomes 10
478 becomes 500 (that hurts)
Multiply
10 x 500 = 5000
[Actual value of 12 x 478 is 5736. The reason the estimated value is lower is due to the fact that going from 12 to 10 was a reduction of 17%, while going from 478 to 500 was an increase of only 5%]
Adam traveled out of town for a regional basketball tournament. He drove at a steady speed of
.4 miles
for 4.62 hours.
The exact distance Adam traveled was
v miles.
Rounding decimals to the nearest whole number, Adam traveled a distance of about
miles.
The exact distance Adam traveled was v miles is 334.488 miles.
What is distance ?
The size or extent of the displacement between two points is referred to as distance. Keep in mind that the distance between two points and the distance travelled between them are not the same. Distance traveled is the total length of the path traveled between two positions. Travel distance is not a vector.
Exact = 334.488 miles
Rounded, 72 × 5 = 360
There were 3 decimal places in the factors, so after multiplying all the digits, put a decimal point 3 places from the right.
Your estimate from the rounded numbers is supposed to help confirm a reasonable answer.
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Match the equation to its description:
y=2x+3
2y=-3x-4
x--10
y-8
3y-2x+12
The equation of line is given below:
a) m = 2 , b = -3
b) m = -3/2 , b = -2
c) m = not defined , b = none
d) m = 0 , b = -8
e) m = [tex]\frac{2}{3}[/tex] , b = -4
What do you mean by equation of line?
A line equation is an algebraic representation of a set of points that together form a line in a coordinate system. A number of points that together form a line of axes, represented as a set of variables x,y, form an algebraic equation called the line equation.
Slope intercept form of the line is y = mx - b where m is the slope of the line and b is the x-intercept
a) y = 2x + 3
On comparing the equation with y = mx - b, we get m = 2 , b = -3
b) 2y = -3x -4
⇒ y = ( -3x -4 )/2
⇒ y = [tex]\frac{-3x}{2}[/tex] - 2
On comparing the equation with y = mx - b, we get m = -3/2 , b = -2
c) x = -10
⇒ x + 10 = 0
On comparing the equation with y = mx - b, we get m = not defined , b = none
d) y= 8
On comparing the equation with y = mx - b, we get m = 0 , b = -8
e) 3y = 2x + 12
⇒ y = (2x + 12)/3
⇒ y = [tex]\frac{2x}{3}[/tex] + 4
On comparing the equation with y = mx - b, we get m = [tex]\frac{2}{3}[/tex] , b = -4
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como se escribe 621,000 en notación científica
Answer:
La notación científica es una forma de escribir números muy grandes o muy pequeños de manera más compacta y legible. En la notación científica, se mueve el punto decimal de un número hasta que tenga una sola cifra a la izquierda del punto y luego se multiplica el número resultante por 10 elevado a una potencia de 10.
Por ejemplo, para escribir 621,000 en notación científica, podemos mover el punto decimal tres lugares a la derecha para obtener el número 6.21. Luego, podemos multiplicar este número por 10 elevado a la potencia de 3 (10^3), lo que da 6.21 x 10^3 = 6.21 x 1000 = 621,000.
Entonces, en notación científica, 621,000 se escribe como 6.21 x 10^3.
Solve the nonlinear system of equations for real solutions. Y=x^2-3;6x-y=11
The required solution of the nonlinear equation is (4, 13) and (2, 1).
Given that,
To solve the nonlinear system of equations for real solutions. y =x²-3, 6x-y=11.
The process in mathematics to operate and interpret the function to make the function or expression simple or more understandable is called simplifying and the process is called simplification.
here,
y =x²-3 - - - - - [1]
6x-y=11
From equation 1,
6x -x² + 3 = 11
x² - 6x + 8 = 0
x = 4, and 2
Substitute this x's in equation 1
That gives for the above x's,
y = 13 and 1
Thus, The required solution of the nonlinear equation is (4, 13) and (2, 1).
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find the slope of the line that contains the points (4,3)and(-6,27)
fifteen is what percent of 5
Answer:
300%
Step-by-step explanation:
You want to know what percentage 15 is of 5.
PercentA ratio or fraction is converted to a percentage by multiplying by 100%.
[tex]\dfrac{15}{5}\times100\% = \boxed{300\%}[/tex]
15 is 300% of 5.
A graduate student is designing a research study. She is hoping to show that the results of an experiment are statistically significant. What type of p-value would she want to obtain?.
The required type of p-value would she want to obtain is small p-value.
What is hypothesis test?Hypothesis testing is a type of measurable surmising that utilizes information from an example to make inferences about a populace boundary or a populace probability distribution. Initial, a speculative supposition that is made about the boundary or dispersion.
According to question:P-value shows that the outcomes are genuinely huge.
P-value in Measurements assists with performing speculation test and it assists with deciding the meaning of the outcomes.
A little P-value commonly (P<0.05) demonstrates solid proof against the invalid speculation in this way, we reject the invalid speculation, on opposite when P-esteem is enormous we can't dismiss the invalid speculation.
Thus, required answer is small p-value.
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Help asp before 11:59 pm please thank you if you helped
The function has been shifted down by 8 units.
What is transformation of a function?The curve representing the graph "moves to the left/right/up/down" or "expands or compresses" or "reflects" when functions are transformed.Transformations are classified into three types: translations, reflections, and dilations. When a function is transformed, it can be vertical (affecting the y-values) or horizontal (affecting the x-values) (affects the x-values).Here given the function,
y = x
Required that,
Find the transformation that results in: y = x - 8
When a function f(x) is shifted by b units, the new function g(x) is defined as g(x) = f(x) - b.
In this instance:
y = x
b = 8
As a result, the new function is:
y = x - b
8 should be substituted for b.
y = x - 8
Hence, the function is shifted 8 units downward,
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What is the domain of this relation? (0, 2) (1,9) (-9, 6) (-4, 7)?
Answer: 5 trust me
Step-by-step explanation: trust me
solve this please......
4x + 3 = 2x + 14 solve each equations
Diego has a skateboard, scooter, bike, and go-cart. He wants to know which vehicle is the fastest. A friend records how far Diego travels on each vehicle in 5 seconds. For each vehicle, Diego travels as fast as he can along a straight, level path.
What is the distance each vehicle traveled in centimeters?
Skateboard:
cm
Scooter:
cm
Bike:
cm
Go-Cart:
The required, bike is the fastest among all the vehicles.
What is unit conversion?Unit conversion is defined as the conversion of units of the same identity through various methods such as, meters in kilometers and centimeters in kilometers.
1.
In 5 seconds skateboard traveled 90 feet.
SInce 1 feet = 30.48 centimeter
90 feet = 2743.2 centimeter
2.
In 5 seconds scooter traveled 1,020 inches
Since 1 inch = 2.54 centimeter,
1020 inches = 2590.8 centimeter
3.
In 5 seconds bike traveled 4800 centimeters
4.
In 5 seconds go-kart traveled 0.03 kilometers
Since, 1 kilometers = 100000 centimeter
0.03 kilometers = 3000 centimeter
Now compare all the distances which one has the higher distance will be the fastest,
Bike > go-kart > skateboard > scooter.
Thus, Bike is the fastest vehicle.
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Write a system of equations to describe the situation below, solve using any method, and fill in the blanks.
Will and his good buddy Owen are both mechanics at a shop that does oil changes. They are in a friendly competition to see who can complete the most oil changes in one day. Will has already finished 4 oil changes today, and can complete more at a rate of 2 oil changes per hour. Owen just came on shift, and can finish 3 oil changes every hour. Sometime during the day, the friends will be tied, with the same number of oil changes completed. How many oil changes will Will and Owen each have done? How long will that take?
The number of oil changes that Will and Owen would each have done is 6 oil changes respectively.
The number of hours it would take both Will and Owen is equal to 4 hours.
How to write a system of equations?In order to write a system of equations to describe this situation, we would assign variables to the number of hours per oil change and number of oil changes respectively, and then translate the word problem into algebraic equation as follows:
Let the variable x represent the number of hours.Let the variable y represent the number of oil changes.Since Will has already finished 4 oil changes today, and can complete more at a rate of 2 oil changes per hour, we have;
y = 2x + 4 .....equation 1.
Since Owen just came on shift, and can finish 3 oil changes every hour, we have;
y = 3x .....equation 2.
Next, we would determine the number of hours per oil changes they both would have each completed by equating equation 1 and equation 2 as follows;
3x = 2x + 4
3x - 2x = 4
x = 4 hours.
For the number of oil changes for Will, we have;
y = 2(4) + 4
y = 12 oil changes.
For the number of oil changes for Owen, we have;
y = 3(4)
y = 12 oil changes.
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When Earth and Mars are farthest from each other they are about 4.01 x 100,000,000 kilometers apart. Sarah says "To right this number in standard form, I can move the decimal point 9 digits to the right because there are 9 digits in the 100,000,000." Explain and correct Sarah's answer.
To correct Sarah's answer, the standard form of the given value would be = 4.01 × 10^⁹ km.
What is a standard form?Standard form is defined as the simplified method of representation of large numericals using decimal number, between 1.0 and 10.0, which is then multiplied by a power of 10.
The distance between the earth and Mars = 4.01 x 100,000,000 kilometers.
There are 9 digits in 100,000,000,
Therefore to write the standard form of the given distance of 4.01 x 100,000,000 kilometers would be;
4.01 × 10^⁹ km.
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A music website charges x dollars for individual songs and y dollars for entire albums. Person A pays $25.92 to download 6 individual songs and 2 albums. Person B pays $33.93 to download 4 individual songs and 3 albums. Write a system of linear equations that represents this situation. How much does the website charge to download a song? an entire album???
Answer:
1/ y= -3x + 12.96
2/ $9.99 for an entire album & $0.99 for a song
Step-by-step explanation:
We know that the
The amount charged for downloading individual songs = x dollars
And the amount charged for downloading an entire album = y dollars
Let's write a function for person A first
6x + 2y = 25.92
Solve, and we will get
y = -3x + 12.96
Now to person B
4x + 3y = 33.93
Putting the value of y from the first equation in the second
4x + 3(12.96 - 3x) = 33.93
- 5x = - 4.95
x = $0.99
Then we take
y = 12.96 - 3x
= 12.96 - 2.97
= $9.99
Peter rode her bike 1 km
before topping. Lauren
rode 602 m before
topping. A) How many
metre farther did Peter ride
than Lauren?
The distance that Peter rode more than Lauren is 398 m .
In the question ,
it is given that ,
before stopping the distance that Peter rode is = 1km = 1000 m .
the distance that Lauren rode is = 602 m .
the difference in the distance can be calculated using the formula ,
So , the difference in the distance is = (distance rode by Peter) - (distance rode by Lauren) .
Substituting the values from above ,
we get ,
= 1000 - 602
on further simplification,
we get ,
= 398 m
Therefore , Peter rode 398m farther than Lauren .
The given question is incomplete , the complete question is
Peter rode her bike 1 km before stopping. Lauren rode 602 m before stopping. How many meter farther did Peter ride than Lauren ?
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If point C divides segment AB with a ratio 2:3 , what are the coordinates of point C?
The coordinates of points C are (4,1).
The coordinates of the points D are (3, 2) respectively.
What is coordinates forumla?y = mx + c. Conversely,is the formula of coordinate that help to find satisfy to the equation y = mx + c is always lie on the line with the gradient m and y-intercept of c.
If the point C is divides AB in the ratio 2:3, then the coordinates of C are;
Xc=2(1)+3(6)/2+3
Xc=2+18/5
Xc=20/5 = 4
Yc=2(4)+3(-1)/2+3
Yc=8-3/5
Yc=5/5 = 1
The coordinates of points C are (4,1).
If the point D divides the AC in the ratio 3:2, then the coordinates of D are-
Xc= 3(1)+2(6)/3+2
Xc=3+12/5
Xc=15/5 = 3
Yc=3(4)+2(-1)/3+2
Yc=12-2/5
Yc=10/5=2
The coordinates of the point D are (3, 2).
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n: 1/2 as 6:1
n = ?
Answer:
N=3. you get this by using the proportion 6/N=1/1/2.
Thank you sooo much for the help if you do
WHAT IS IMAGE ABOUT? STEM AND LEAF
Answer:
A
Step-by-step explanation:
A stem and leaf plot is a way of representing data (it might be helpful to look up a video—the organic chemistry tutor has a good one).
The column on the left shows the first digit of each number, and the column on the right is the different ones place digits.
Take the number 31. It would go at the bottom, where the 3 (from the tens place) is in the left column and the 1 (from the ones place) is in the right column.
3 would be in the first row as 03.
You have three nines in your list of data, and only A has three nines.
I hope this helps!
The value of n is a distance of 1.5 units from -2 on a number line.
Answer: -3.5
Step-by-step explanation:
Answer the questions about the graph shown below.
Part A) What is the price per ticket?
Part B) What equation can be used to represent the line?
Part C) If the theater were to sell 328 tickets, how much money would they make?
Part D) Is this relationship proportional? How do you know?
Therefore , the price per ticket is $12,the equation used is y=12x, the theatre made $3936 by selling 328 ticket and the relationship is proportional.
What is equation?An algebraic equation is a linear equation. Each term in a linear equation is either a constant or the result of a constant plus one variable. In the case of a linear equation with two variables, the graph is a straight line.
Here,
A) From the given we can find the price per ticket
which is => y/x
=> 60/5
=>12
Therefore the price per ticket is $12
B)The equation can be used to represent the graph is
y= 12x
C) The theater were to sell 328 tickets they would make
=> 328*12=3936
Therefore the money would they make is $3936
D)The relationship proportional as we can see from the graph
Therefore , the price per ticket is $12,the equation used is y=12x, the theatre made $3936 by selling 328 ticket and the relationship is proportional.
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Which inequality does the given graph represent?
A) y > x + 2
B) y ≤ −x − 2
C) y < x − 2
D) y ≥ x − 12
The given inequality in the graph is represented by the inequality y < x - 2. The correct option is C.
What is inequality?When two expressions are connected by a sign like "not equal to," "greater than," or "less than," it is said to be inequitable. The inequality shows the greater than and less than relation between variables and the numbers.
Given that the graph is attached to the question and shows one of the inequalities from the options.
When the inequalities are plotted on the desmos graph it is observed that the inequality which represents the graph is y < x − 2.
Therefore, the given inequality in the graph is represented by the inequality y < x - 2. The correct option is C.
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-x+6y= 5
2x - 12y = -10
Answer:
Step-by-step explanation:
-x+6y= 5 ----1
2x - 12y = -10 ----2
6y = x + 5
y = (x + 5)/6
2x -12(x + 5)/6 = -10
2x - 2x + 5 = -10
0 = -15
so, x and y have no value
For which situations is it appropriate to use a sample? Select three options.
What percentage of pick-up truck drivers want their next vehicle purchase to be another pick-up truck?
What is the average number of rainbows each year in Honolulu?
How many pedestrians would use a walkway built over a busy road?
How many police cars are equipped with computers?
What is the most popular car color in the teachers’ parking lot?
Options B, C and D are the situations it is appropriate to use a sample.
What is a simple sample technique?Simple random sampling is a sampling technique in which each member of a population has an equal chance of being chosen, through the use of an unbiased selection method. The sample is chosen by a random method as every subject in the sample is assigned a number.
Sampling saves money by granting researchers to gather the same answers from a sample that they would receive from the population. Non-random sampling is significantly cheaper than random sampling because it lowers the cost associated with searching people and collecting data from them.
Therefore, options B, C and D are the situations it is appropriate to use a sample.
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Answer:
B,C,D
Step-by-step explanation:
simplify the expression and find domain that will make it equivalent to previous expression.
[tex]\frac{1}{a^{2}+ab } +\frac{1}{ab+b^{2} }[/tex]
Step-by-step explanation:
The answer is
[tex] \frac{1}{ab} [/tex]
because
[tex] \frac{1}{a(a + b)} + \frac{1}{b(a + b)} = \frac{1}{ab} [/tex]
Thank yuo give brainlist
10x-22 3x+7 find x and the converse
The value of the x for the given condition will be 4.14.
What are vertically opposite angles?It is defined as the angles when two lines intersect each other and at the intersecting point, some pair of angles are formed which we call vertically opposite angles, as the name describes that they have vertically opposite angles.
It is given that, ∠1 =10x-22, ∠2=3x+7
Since they are vertically opposite angles they are equal.
∠1 = ∠2
10x-22 = 3x+7
10x-3x=7+22
7x=29
x=29/7
x=4.14°
Thus, the value of the x for the given condition will be 4.14.
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The value of x is 15, for the given pair of parallel lines.
What is angle?An angle is the formed when two straight lines meet at one point, it is denoted by θ.
Given that,
Lines y and z are parallel,
And angles are (10x-22)° and 3x+7)°
The supplementary angle of (10x-22)° is 180° - (10x-22)°.
Since, lines y and z are parallel, therefore,
angle 180° - (10x-22)° and (3x+7)° will be equal.
180° - (10x-22)° = (3x+7)°
180° = 3x+7 + 10x - 22
180 = 13x - 15
195 = 13x
x = 15
The required value of x is 15.
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A cyclist rides 8 miles in 30 minutes.
What is the speed of the cyclist in miles per hour? Round to the nearest mile per hour.
WHAT IS THE ANSWER
The speed of the cyclist in miles per hour is 16 miles per hour
What is the definition of speed?The speed of an object is the rate of change of the object's distance over time
What is the speed of the cyclist in miles per hour?From the question, we have the following parameters that can be used in our computation:
A cyclist rides 8 miles in 30 minutes.
The parameters in the above statement can be further expressed as
Distance = 8 miles
Time = 30 minutes
This means that the distance is 8 miles and the time taken to cover the distance is 30 minutes
Convert the minutes to hour
So, we have
Time = 0.5 hour
The speed of the cyclist in miles per hour is then calculated as
speed = 8 miles/0.5 hour
Evaluate the quotient
speed = 16 miles/hour
Hence, the cyclist' speed is 16 miles/hour
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