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Mathematics

2 answers:

Yanka [14]4 years ago

7 0

Answer:

Explanation:

Since it is an equilateral Triangle their sides are the same.

Thus, 4(x - 1) = x + 8 = 2x + 4

But we can take 2 sides to work with:
To solve for x:

4(x - 1) = x + 8
4x - 4 = x + 8
4x - x = 8 + 4
3x = 12
x = 12/3
x = 4

Therefore, x = 4 and the equation involving x is 4(x - 1) = x + 8

gavmur [86]4 years ago

3 0

Answer:

Step-by-step explanation:

An equilateral triangle has 3 equal sides.

4(x-1) = x +8

4x-4=x+8

3x=12

x=4

Same result obtained when comparing the other pairs of equations.

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M+5n=p for m <br> Solving for a variable

Verdich [7]

Answer:

M=p-5n

Step-by-step explanation:

Here we are given that M+5n=p

We are asked to solve this equation for M. In order to do that we will follow these steps.

Subtracting 5n from both sides we get

M+5n-5n=p-5n

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5 0

4 years ago

Please help me and my son I am confused

Agata [3.3K]

Answer:

-13 $p^{4}$ - $8p^{2}$ + 4p + 3

Step-by-step explanation:

I am having a little trouble reading the number. I think 5 is the question number and not part of the problem. I think this is the problem:

(4p - 6 $p^{4}$ - 3) - (8 $p^{2}$ + 7 $p^{4}$ - 6) You take the opposite of everything inside the second set of parentheses. You can think of it as multiplying through by -1