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3 years ago

5

1 answer:

4 0

This is called the Pythagorean theorem : a ² + b ² = c ². You can substitute any of the variable with any of the known numbers and then you all you have to do is isolate the variable. I hope that helps!!

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Evaluate the following expression using x=3 4 x + 8

azamat

The answer is 20 because if you replace the x with 3 u get this equation 4(3)+8 now you solve it and get 20 i hope i helped you!

6 0

3 years ago

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Leah flips three fair coins. What is the probability that she will land on 2 heads and 1 tail?

Sergeeva-Olga [200]

Answer:

b. 3/8

Step-by-step explanation:

There are 8 total outcomes on what the coin will land on. If you look at the image, you'll see that there are 3 outcomes for the coin landing on 2 heads and 1 tail.

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3 years ago

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Write a quadratic function in vertex form whose graph has the vertex (−5, −1) and passes through the point (−2, 2)

denis23 [38]

This is your perfect answer

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3 years ago

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

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Find the value of x A. 7 B. 6 C. 8 D. 14

Anni [7]

x + 2 = 7, x is a variable, but we can work out its value if we try! A variable doesn't have to be "x", it could be "y", "w" or any letter, name or symbol.

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3 years ago