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3 years ago

Explain why numbers with a 5 in ones place or not prime numbers

Mathematics

2 answers:

Rainbow [258]3 years ago

6 0

I think its because u can always divide it by the number 5

timama [110]3 years ago

5 0

It is because they will always be divisible by 5.

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Solve the equation for a? z=mab. a)a=z+mb b)a=z-mb c)a= mb/z d)a=z/mb

Bingel [31]

Answer:

a = z/mb

Step-by-step explanation:

Given:

$\displaystyle \large{z=mab}$

To solve for a, divide both sides by the variables mb to isolate a-term.

$\displaystyle \large{\dfrac{z}{mb}=\dfrac{mab}{mb}}$

Simplify the expression and we finally have solved for a-term.

$\displaystyle \large{\dfrac{z}{mb}=a}\\\\\displaystyle \large{a=\dfrac{z}{mb}}$

Therefore, the answer to this question is a = z/mb.

Please let me know if you have any questions regarding my answer or explanation!

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2 years ago

Type the integer that makes the following addition sentence true: = 6 39 +

quester [9]

-33

Hope this helps. :)))))

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3 years ago

The volume of a rectangular prism can be represented by the expression 216x^3y^2. If the length is 8 y and the width is 9 x , wh

Nastasia [14]

Answer:

h= 216x^3y^2÷(8yx9X) = 3x^2y

3 0

3 years ago

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 - α) % 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 p = 0.50.

The information provided is:

MOE = 0.03

Confidence level = 99%

α = 1%

Compute the critical value of z for α = 1% as follows:

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

*Use a z-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.

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3 years ago

Jerimiah records lap times at the track meet on Saturday. He records a time of 85 seconds for Jennifer's lap, but she really com

VMariaS [17]

Answer:

To be honest I'm not sure.

6 0

2 years ago

Read 2 more answers