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babunello [35]
3 years ago
9

No need for explanation

Mathematics
2 answers:
ra1l [238]3 years ago
7 0

Answer:

x=7

Step-by-step explanation:

AysviL [449]3 years ago
5 0

Answer:

x = 7

Step-by-step explanation:

x + 2x + 69 = 90

3x + 69 = 90

3x = 21

x = 7

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5 0
3 years ago
Please help very urgent on test...
stepladder [879]

Answer:

Equation: (2x+5)4=(2x+8)3

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Step-by-step explanation:

You would multiply 2x+5 and 4 because there are four sides to a square, so the perimeter of the square would be 8x+20. This would go same for the triangle, making the perimeter 6x+24.

So 8x+20=6x+24 is your new equation. Then, you do the opposite of the order of operations, and add or subtract first. It would be easiest to subtract 20 and 6x from both sides.

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You can plug this in to prove if it is correct.

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Lmk if you get it!

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