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ella [17]
3 years ago
9

Please help very urgent on test...

Mathematics
1 answer:
stepladder [879]3 years ago
8 0

Answer:

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

X: 2

Perimeter: 36

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.

That leaves you with 2x=4. Dividing 2 by both sides means x=2

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

16+20=36

12+24=36

Lmk if you get it!

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Give a 98% confidence interval for one population mean, given asample of 28 data points with sample mean 30.0 and sample standar
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The confidence interval for the population mean, given the sample mean μ and the sample standard deviation σ, can be calculated as:

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