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3 years ago

Solve the equation for the indicated variable. Q = 8rs^2, for r

Mathematics

2 answers:

Elis [28]3 years ago

8 0

Answer:

r = Q/(8s^2)

Step-by-step explanation:

Divide by the coefficient of r.

Q/(8s^2) = 8rs^2/(8s^2) = r

Karolina [17]3 years ago

8 0

ANSWER

$\boxed { r = \frac{Q}{8 {s}^{2} } }$

EXPLANATION

The given equation is;

$Q=8rs^2$

We want to solve this equation for r.

This means that we need to isolate r, so that it will be on one side of the equation, while all other variables and constants are also on the other side.

Let us divide both sides of the equation by

$8 {s}^{2}$

to obtain,

$\frac{Q}{8 {s}^{2} } = \frac{8rs^2}{8 {s}^{2} }$

We cancel out the common factors to obtain,

$\frac{Q}{8 {s}^{2} } =r$
Or

$r = \frac{Q}{8 {s}^{2} }$

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N76 [4]

Answer:
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Explanation:
First, we will need to get the coordinates of points M' and N':
We are given that the dilation factor (k) is 0.8
Therefore:
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x coordinate of M' = k * x coordinate of M
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y coordinate of M' = k * y coordinate of M
y coordinate of M' = 0.8 * 4 = 3.2
Therefore, coordinates of M' are (1.6 , 3.2)

For point N':
x coordinate of N' = k * x coordinate of N
x coordinate of N' = 0.8 * 3 = 2.4
y coordinate of N' = k * y coordinate of N
y coordinate of N' = 0.8 * 5 = 4
Therefore, coordinates of M' are (2.4 , 4)

Then, we can get the slope of M'N':
slope = (y2-y1) / (x2-x1)
For M'N':
slope = (3.2-4) / (1.6-2.4)
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Hope this helps :)

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3 years ago

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tankabanditka [31]

Answer:

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Step-by-step explanation:

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3 years ago

If remove the zero from 0.76 would it change the value of the number

wariber [46]

Question 1:

<h3>Answer: The number does <u>not</u> change</h3>

Removing the zero from 0.76 leads to .76 which is the same as before. Both lead to $7.6 \times 10^{-1}$ in scientific notation.

Personally I prefer the zero up front to make the decimal point stand out easier. Of course it's just a preference, so its up to you to decide which you prefer.

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Question 2:

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3 years ago

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olasank [31]

The graph is missing, so i have attached it;

Answer:

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Step-by-step explanation:

From the graph attached, we are given 3 coordinate points of (x, y) namely;

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