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3 years ago

The following triangle is isosceles. Write an equation and use it to solve for x.

Mathematics

2 answers:

Tpy6a [65]3 years ago

7 0

Answer:

x = 6

Step-by-step explanation:

Since the sides are congruent (definition of isosceles triangle), the angles must also be congruent.

Step 1: Set up equation

4x + 20 = 8x - 4

Step 2: Solve for x

Subtract 4x on both sides: 20 = 4x - 4
Add 4 to both sides: 24 = 4x
Divide both sides by 4: 6 = x
Rewrite: x = 6

Roman55 [17]3 years ago

5 0

The answer to the question is x=6

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3 years ago

The estimate of the population proportion should be within plus or minus 0.02, with a 90% level of confidence. The best estimate

Rudiy27

Answer:

The sample size required is 910.

Step-by-step explanation:

The confidence interval for population proportion is:

$CI=\hat p\pm z_{ \alpha /2}\sqrt{\frac{\hat p(1-\hat p)}{n} }$

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Thus, the sample size required is 910.

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