3 years ago

Type in expanded form. Use parentheses to indicate multiplication. (3x)²

Mathematics

1 answer:

Brrunno [24]3 years ago

3 0

Hint: $\bf (abc)^z\implies a^zb^zc^z\impliedby \textit{apply the exponent to "all" factors}$

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Find the critical value zc necessary to form a confidence interval at the level of confidence shown below.

Dahasolnce [82]

I think this is the correct answer: * Zc x (sigma/sqrt of n)
c= .95 (Zc of 1.96)
0.711*

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3 years ago

Does anyone know this??

STALIN [3.7K]

Hi there! The answer is C.

Explanation:
We have the following equation:

$\frac{8}{15} = \frac{x}{6}$
To solve this type of equation (with an x in the denominator of a fraction) we must cross-multiply the numerator and the denominator.

$15 \times x = 8 \times 6$
Multiply

$15x = 40$
Divide both sides by 15.

$x = \frac{40}{15} = 2 \frac{2}{3}$
~ Hope this helps you!

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2 years ago

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Ajar contains "x" black and "y" white balls. What is the probability that a random draw is black?

Levart [38]

Answer:

Step-by-step explanation:

favorable events=x

total number of events=x+y

P=(favorable events)/(total number of events)=x/(x+y)

8 0

3 years ago