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3 years ago

I need help ASAP Find y.

Mathematics

2 answers:

Sladkaya [172]3 years ago

5 0

Answer:

7√2

Step-by-step explanation:

Blizzard [7]3 years ago

4 0

Answer:

<h2>315 i Calaulated it </h2>

Step-by-step explanation:

I know it is right trust me and if it is wrong srry but you will get it right

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Plz answer its easy math.

Serga [27]

<h2>Greetings!</h2>

Answer:

B and E

Step-by-step explanation:

The rules of indicies states:

$x^{a}$ ÷ $x^{b}$ = $x^{a-b}$

So $3^{-8}$ ÷ $3^{-4}$ = $3^{-8 - - 4}$ = $3^{-4}$

So that means B is one of the correct answers.

To find the other correct value, you can divide the two fractions as stated in the question:

$3^{-8}$ by $3^{-4}$ = $\frac{1}{81}$

81 is equivalent to 3⁴

So that means E is also correct.

<h2>Hope this helps!</h2>

3 0

3 years ago

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Free time for everyone

sergiy2304 [10]

Answer:

Step-by-step explanation:

*Undertale playing*

7 0

3 years ago

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Find the volume of the triangular prism.<br> NEED ASAP PLS

Alexus [3.1K]

Answer:

32 inches cubed

Step-by-step explanation:

Multiply the length by the width: 4*4=16

Multiply by 12: 16*1/2=8

Multiply by height: 4*8=32

Hope this helped!

5 0

3 years ago

Read 2 more answers

What is the greatest commen factor of 30 and 54

seropon [69]

54. 30
^ ^
27 2. 10 3
^ ^
9 3. 5 2
^
3 3
They only have 3 and two in common when you fully factor them. 3×2= 6
6 is the greatest common factor.

3 0

3 years ago

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A manufacturing company wants to use a sample to estimate the proportion of defective tennis balls that are produced by a machin

Kitty [74]

Answer:

The least number of tennis balls needed for the sample is 1849.

Step-by-step explanation:

The (1 - <em>α</em>) % 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 for this interval is:

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

Assume that the proportion of all defective tennis balls is <em>p</em> = 0.50.

The information provided is:

MOE = 0.03

Confidence level = 99%

<em>α</em> = 1%

Compute the critical value of <em>z</em> for <em>α</em> = 1% as follows:

$z_{\alpha/2}=z_{0.01/2}=z_{0.005}=2.58$

*Use a <em>z</em>-table.

Compute the sample size required as follows:

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

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

$=[\frac{2.58\times \sqrt{0.50(1-0.50)} }{0.03}]^{2}\\\\=1849$

Thus, the least number of tennis balls needed for the sample is 1849.

8 0

3 years ago