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zaharov [31]
3 years ago
8

Amir ran 26.2 miles in 5 hours. On average,how many miles did he run per hour?

Mathematics
1 answer:
Vinil7 [7]3 years ago
4 0

The answer to the problem is 5.24 and here's why:

If Amir ran 26.2 miles in 5 hours, then in order to find his average number of miles run in an hour, we have to divide the total distance by the time it took him to reach that distance. In this example, his total distance was 26.2 miles, and he ran it in 5 hours, so we would divide 26.2 by 5 (26.2 / 5 = 5.24), and when we do that, we get 5.24 miles per hour.

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4.
kow [346]

Answer:

B

Step-by-step explanation:

The equation of a circle in standard form is

(x - h)² + (y - k)² = r²

where (h, k) are the coordinates of the centre and r is the radius

(x + 7)² + (y - 5)² = 16 ← is in standard form

with centre = (- 7, 5 ) and r = \sqrt{16} = 4 → B

5 0
3 years ago
Solve the system using the substitution method:<br> 3x + 5y = -10<br> X - 5y =-10
inn [45]

<u>Answer:</u>

Point Form:

(−5,1)

Equation Form:

x=−5, y=1

<u>Step-by-step explanation:</u>

Solve for the first variable in one of the equations, then substitute the result into the other equation.

1.  x=5y−10

2. 20y−30=−10

3. y=1

4. x=−5

4 0
3 years ago
Sonya and Lucas walk from school to the library they walk 5 blocks south and 4 blocks west to get to the library if the school i
Lelu [443]

We are given coordinates of the school located at a point (9,-1).

Library is located 5 blocks south and 4 blocks west .

According to coordinate axes, south is downward and west is on left side.

So, we need to move 5 units down of 9.

<em>5 units down of 9 would be 9-5 = 4.</em>

And then <em>4 blocks west that mean -1 -4 = -5.</em>

<h3>Therefore, coordinate of the library is located at the point (4,-5).</h3>
4 0
3 years ago
Sarah rolls a die twice. What is the probability that she rolls a 3 and then an even number?
Brrunno [24]

Answer:

A

Step-by-step explanation:

The probability of rolling a 3 is  

1 /6  since there is 1 three and there are 6 sides total. The probability of rolling an even number is  1 /2  since there are 3 even numbers and 6 total sides. Multiply  1 /6  and  1 /2  and the correct answer is  1 /12 .

3 0
3 years ago
Read 2 more answers
Which matrix equation represents the system of equations?<br><br> {-x+ 2y = 0 <br> y= -2
Snowcat [4.5K]

We are given a system of equations,

\begin{cases}-x+2y=0\\y=-2\\ \end{cases}

This will translate into a 2x2 matrix of coefficients (because 2 equations and 2 unknowns),

\begin{bmatrix}-1&2\\0&1\\ \end{bmatrix}

The matrix will then be applied to the vector (lower dimensions on top),

\begin{bmatrix}x\\y\\ \end{bmatrix}

And the result vector will be whats on the other side of equals sign,

\begin{bmatrix}0\\-2\\ \end{bmatrix}

So to put everything together,

\begin{bmatrix}-1&2\\0&1\\ \end{bmatrix}\begin{bmatrix}x\\y\\ \end{bmatrix}=\begin{bmatrix}0\\-2\\ \end{bmatrix}

Hope this helps :)

6 0
2 years ago
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