3 years ago

Please help me on this question?

2 answers:

4 0

If this is a word expression, then this is probably correct but idk what a word expression is so here goes.

15 plus twenty times four

NeTakaya3 years ago

3 0

Four times fifteen plus twenty in parentheses
idk if its correct though <span />

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Marina86 [1]

Answer:

Step-by-step explanation:

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1 year ago

tekilochka [14]

$rt=d\qquad\text{divide both sides by}\ r\neq0\\\\\dfrac{rt}{r}=\dfrac{d}{r}\\\\\boxed{t=\dfrac{d}{r}}$

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2 years ago

Aleksandr-060686 [28]

Answer:

x=2

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Step-by-step explanation:

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2 years ago

xxTIMURxx [149]

Answer:

1245

Step-by-step explanation:

-Given the standard deviation is $9000 and the margin of error is $500.

-the minimum sample size at a 95% confidence level can be calculated using the formula:

$n\geq( \frac{z\sigma}{MOE})^2\\\\\\\geq (\frac{1.96\times 9000}{500})^2\\\\\\\geq 1244.6784\approx 1245$

Hence, the minimum sample size is 1245

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2 years ago

frozen [14]

Answer:

$\frac{x^6(x+29)}{3(3x-8)}$

Step-by-step explanation:

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2 years ago