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irinina [24]
3 years ago
10

Question below, I already did half of it but I can't get the perimeter?

Mathematics
1 answer:
Vlada [557]3 years ago
7 0

Answer:  blue triangle: 53 - red triangle: 17

Step-by-step explanation:

12+2+7\left(3\right)+7+5\left(3\right)-4

12+2+21+7+5\left(3\right)-4

12+2+21+7+15-4

53

3+3+6-5+3+7

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Answer:

Length equals 16 and Width equals 4

Step-by-step explanation:

First let us create an equation. We can use L and W for length and width.

If the length is 4 times the width, then we end up with: L = 4W

It then says, " If its length were diminished by 6 meters and its width were increased by 6 meters, it would be a square."

Since a square has an equal length and width then we end up with:

L - 6 = W + 6

Knowing this we can just substitute the first equation into the second one leaving us with: 4W - 6 = W + 6

We then remove a W from both sides so that the right side is left with a 6, and add 6 to both sides to remove the -6 from the left one.

This leaves us with 3W = 12

W = 4, and if we put that into our first equation, L = 4W, then Length equals 16, and Width equals 4. We can check this by putting it into the 2nd equation. 16 - 6 = 4 + 6.

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