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4 years ago

What is the vaule or r + t when r= -12, and t =-8

Mathematics

2 answers:

Maurinko [17]4 years ago

4 0

The answer is -20 for real

Tems11 [23]4 years ago

3 0

The answer to your question is -20 i hope this helps!

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The graph shows the distance in miles of a runner over x hours. What is the average rate of speed over the interval [9, 11]?

ELEN [110]

Question:

The graph shows the distance in miles of a runner over x hours. What is the average rate of speed over the interval [9, 11]?

A. 2/5

B. 1

C.2

D.5/2

The image of the graph is attached below.

Answer:

Option D: 5/2 is the average speed over the interval [9,11]

Explanation:

The graph shows the distance in miles of a runner over x hours.

Now, we need to determine the average rate of speed over the interval $[9,11]$

The x-axis represents the time taken.

The y-axis represents the distance.

To find the average speed, let us use the formula for speed which is given by

$speed=\frac{distance}{time}$

Thus, substituting the coordinates $(9,6)$ and $(11,11)$ , we have,

$speed=\frac{11-6}{11-9} =\frac{5}{2}$

Hence, the average speed over the interval $[9,11]$ is $\frac{5}{2}$

8 0

3 years ago

Read 2 more answers

If you pay 5% sale tax on three items have you paid a total of 15% sales tax? why or why not

Vlad1618 [11]

No it would be 5% on all the stuff like 50% of 10 is 5

3 0

3 years ago

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Use a graphing calculator to approximate the vertex of the graph of the parabola defined by the following

vivado [14]

Answer: (-0.4, 6.8)

The graph is attached

Step-by-step explanation:

We can find the axis of symmetry using the formula x = -b/2a

x = - -4/2(-5)

x = 4/-10

x = 0.04

Substitute for x and calculate y

y = $\left(0.4^{2}\right)\left(-5\right)-4\left(-0.4\right)\ +6$

y = 6.8

3 0

3 years ago

the six students in mrs. Hughes class were asked how many minutes it takes them to get to school in the morning here's what they

il63 [147K]

Answer:

The mean is: 10.666667

The medium is: is between 15

Step-by-step explanation:

7 0

3 years ago

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How to solve this question

lisov135 [29]

First you need to find a expression that gives you any number of sticks for a number(n) of houses. Start by looking at one house, then two and the third. You will see that the number of sticks is found by 4n + 1, and n is the number of houses.

So to find how many houses there will be if 61 sticks are used, you set 61 equal to the expression 4n + 1 and you should get n = 15

5 0

3 years ago