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Zinaida [17]
3 years ago
7

Which expression is equivalent to...? Screenshots attached, please help.

Mathematics
1 answer:
BaLLatris [955]3 years ago
3 0

For this case we must simplify the following expression:

\sqrt [3] {64 * a ^ 6 * b ^ 7 * c ^ 9}

We rewrite:

64 = 4 ^ 3\\a ^ 6 = (a ^ 2) ^ 3\\b ^ 6 * b = ((b ^ 2) ^ 3 * b)\\c ^ 9 = (c ^ 3) ^ 3

So:

\sqrt [3] {4 ^ 3 * (a ^ 2) ^ 3 * (b ^ 2) ^ 3 * b * (c ^ 3) ^ 3} =\\\sqrt [3] {4 * a ^ 2 * b ^ 2 * c ^ 3) ^ 3 * b} =

By definition of properties of powers and roots we have:

\sqrt [n] {a ^ m} = a ^ {\frac {m} {n}}

So:

4a ^ 2b ^ 2 c ^ 3 \sqrt [3] {b}

Answer:

Option B

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With what u need help
4 0
3 years ago
With data from the 2009 National Health Interview Survey, the Centers for Disease Control estimated that 9.4% of U.S. children h
egoroff_w [7]

Answer:

0.12 -1.96*0.013= 0.094

0.12 +1.96*0.013= 0.146

And the best option would be:

0.094 to 0.146

Step-by-step explanation:

For this case we have the following info given:

\hat p=0.12 represent the proportion estimated

SE = 0.013 represent the standard error

Confidence =0.95 represent the confidence level

The confidence interval for the true proportion is given by:

\hat p \pm z_{\alpha/2} SE

And for 95% of confidence the critical value is z_{\alpha/2}= 1.96 and replacing we got:

0.12 -1.96*0.013= 0.094

0.12 +1.96*0.013= 0.146

And the best option would be:

0.094 to 0.146

5 0
3 years ago
Write the equation in standard form using integers y=4x+5
Taya2010 [7]
Unsure of what y ou want!  y = 4x + 5 is already in slope-intercept form.  If you want "standard form," which looks like Ax + By + C = 0, then identify A, B and C from the given equation y=4x+5.    Rewrite this as -4x + 1y - 5 = 0, so that A=-4, B=1 and C= -5.  This is the eqn in standard form.

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3 years ago
Trigonometry <br><br> its due in 20 minutes help
krek1111 [17]

Answer:

Answer= 17.5 (B)

Step-by-step explanation:

This is tangent because TOA(opposite/adjacent)

On your calculator, do side length(25) sin angle(35)=17.5

6 0
3 years ago
PLEASE HELP<br> Simplify the expression 5^3+3(5-3)<br> A.137<br> B.131<br> C.27<br> D.21
mojhsa [17]

Answer:

the correct answer is 131

Step-by-step explanation:

5^3 +3(2)

= 125 +6

=131

5 0
3 years ago
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