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1 year ago

Which expression is equivalent to (x+3)+y

Mathematics

2 answers:

vodomira [7]1 year ago

6 0

Answer:I hope my explanation helps

Step-by-step explanation:Those are the unknown variables so there would not be a way to solve the problem unless you had numbers you could cross multiply with then once you find out what those are figure out what y is and multiply (x+3)+y the numbers in the (. ) by y then add them

vova2212 [387]1 year ago

6 0

The answer is remove the parentheses. X+3+y

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What is y= -5/3 x - 1 graphed

Sphinxa [80]

Answer: $y= -5/3 x - 1$ is graphed like this

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2 years ago

Choose the model that shows the correct answer to this problem: PLS ANSWER WILL GIVE BRAINIEST

Vinil7 [7]

Answer:

the last option is correct

Step-by-step explanation:

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2 years ago

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RSB [31]

Answer:

Below in bold

Step-.by-step explanation:

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3. 1.

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6. 1 / 3^4.

7. 7.

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2 years ago

Read 2 more answers

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Tpy6a [65]

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2 years ago

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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:

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

The margin of error is:

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

Given:

$\hat p = 0.16\\MOE= 0.02\\Confidence\ level =0.90$

The critical value of z for 90% confidence level is:

$z_{\alpha /2}=z_{0.10/2}=z_{0.05}=1.645$ *Use a standard normal table.

Compute the sample size required as follows:

$MOE=z_{ \alpha /2}\sqrt{\frac{\hat p(1-\hat p)}{n} }\\0.02=1.645\times \sqrt{\frac{0.16(1-0.16)}{n} }\\n=\frac{(1.645)^{2}\times 0.16\times (1-0.16)}{(0.02)^{2}} \\=909.2244\\\approx910$

Thus, the sample size required is 910.

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3 years ago