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zubka84 [21]
1 year ago
15

Help Please I'll pick a brainliest

Mathematics
2 answers:
zvonat [6]1 year ago
6 0

<u>Answer:</u>

(1, -2)

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

To find the midpoint of a line given coordinates of two points, we have to use the following formula:

\boxed{\mathrm{mid-point =}(\frac{x_1 + x_2}{2} , \frac{y_1 + y_2}{2})},

where (x_1, \space\ y_1) and (x_2, \space\ y_2) are the known coordinates.

In this question, we are given the following points:

• C = (-3, 4)

• D = (5, -8)

When we substitute these values into the formula, we get:

{\mathrm{mid-point =}(\frac{-3 + 5}{2} , \frac{4 + (-8)}{2})}

⇒ {\mathrm{mid-point =}(\frac{2}{2} , \frac{-4}{2})}

⇒ {\mathrm{mid-point =} \bf(1 , -2)}

Alexxandr [17]1 year ago
4 0

Answer:

( 1 , -2 )

Step-by-step explanation:

C = ( -3, 4 )

D = ( 5 , -8 )

(-3 + 5) / 2 = 1

(4 + -8) / 2 = -2

M = ( 1 , -2 )

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(-2, 4)

Step-by-step explanation:

~When reflecting a point of the x-axis, the x value (or first number inside the parenthesis) does not change.

The reason the x-value does not change is because you are reflecting over the x-axis, making the point go up or down. That will change the y-value but the x-value only changes if you move to the left or the right. In this case, you can see that the point's x-value is -2, so that will not change. It's current y-value however is -4. When reflecting over an axis, the number that is changing (in this case the y-value) will just be flipped from positive to negative, or vise versa. In this case, -4 will be reflected to be 4, making point C reflected over the x-axis (-2, 4).

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Step-by-step explanation:

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\huge \boxed{X=30}

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Answer:

<h2><em>29.4 length and 21.4 width.</em></h2>

Step-by-step explanation:

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In addition, we know that the total area is 970 and the length is 8 ft longer than the width (L=W+8). So:

A_{total} = (L+6)(W+6)\\970 = (W+8+6)(W+6)\\970=W^{2}+20W+84\\W^{2}+20W-886=0

With this quadratic equation we're gonna have to solution, the most reasonable is part of the answer. So, solving the equation we have as solutions: W_{1}=21.4 and  W_{2}=-41.4

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simplify:

x = <u>1 ± √(197)</u>

           14

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