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3 years ago

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lisa is painting a fence that is 26 feet long and 7 feet tall. A gallon of paint will cover 350 square feet. Write and slove a p

roportion to determine how many of paint lisa will need

1 answer:

swat323 years ago

5 0

2<span>6 x 7 = 182 now divide that by 16 and your answer is 11.375 round that up to 12.</span>

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frosja888 [35]

B. D=0.25n + 25
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3 years ago

Nick and his cousin Sarah have the same birthday but Nick is 4 years older than cigarettes the variables that represents next ag

ad-work [718]

x = Nick's age y = Sara's age

Nick is 8 years older than Sara, therefore

y = x - 8

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3 years ago

In August, the digits to the code number are I the prime factors of 150. What is the code number for the office door in August

lbvjy [14]

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3 years ago

Which expression is equivalent to the following complex fraction?

valentinak56 [21]

Answer:

Step-by-step explanaAnswer:

\frac{-2y+5x}{3x-2y}

Step-by-step explanation:

Given:

\frac{\frac{-2}{x}+\frac{5}{y}}{\frac{3}{y}-\frac{2}{x}}

To simplify this expression, first make the addition and the subtraction, to get:

\frac{\frac{-2y+5x}{xy}}{\frac{3x-2y}{xy}}=

Next, simplify the two denominators, to get:

\frac{-2y+5x}{3x-2y}tion:

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3 years ago

Read 2 more answers

Use the given degree of confidence and sample data to construct a confidence interval for the population proportion p. n=83, x=4

notka56 [123]

Answer:

The 98% confidence interval for the population proportion p is (0.4149, 0.6695).

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence level of $1-\alpha$ , we have the following confidence interval of proportions.

$\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}$

In which

z is the zscore that has a pvalue of $1 - \frac{\alpha}{2}$ .

For this problem, we have that:

$n = 83, \pi = \frac{45}{83} = 0.5422$

98% confidence level

So $\alpha = 0.02$ , z is the value of Z that has a pvalue of $1 - \frac{0.02}{2} = 0.99$ , so $Z = 2.327$ .

The lower limit of this interval is:

$\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.5422 - 2.327\sqrt{\frac{0.5422*0.4578}{83}} = 0.4149$

The upper limit of this interval is:

$\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.5422 + 2.327\sqrt{\frac{0.5422*0.4578}{83}} = 0.6695$

The 98% confidence interval for the population proportion p is (0.4149, 0.6695).

8 0

3 years ago