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bixtya [17]
3 years ago
13

6 + 12 = 25 - Which value makes the number sentence true? A. 6 B. 7 C. 12 D. 18

Mathematics
1 answer:
max2010maxim [7]3 years ago
4 0

Answer:

7

Step-by-step explanation:

6+12=18

25-7=18

7 makes the sentance true.

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5) Find the area of a rectangle<br> with points at (-8,5), (2,5),<br> (2,-3) and (-8,-3).
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Answer:

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Step-by-step explanation:

Given <u>vertices</u> of a rectangle:

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As points A and D share the <u>same x-coordinate</u>, and points B and C share the <u>same x-coordinate</u>, the difference between the different <u>x-coordinates</u> is the length of the rectangle:

\begin{aligned}\implies \textsf{Length} & = x_B-x_A\\& = 2-(-8)\\& = 2+8\\& = 10\; \sf units\end{aligned}

As points A and B share the <u>same y-coordinate</u>, and points C and D share the <u>same y-coordinate</u>, the difference between the different <u>y-coordinates</u> is the width of the rectangle:

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\begin{aligned}\textsf{Area of a rectangle} & = \sf width \times length\\&=8 \times 10\\&=80 \sf \; units^2\end{aligned}

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Check the picture below.

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