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3 years ago

4/5 , 0.66 , 0.86 , 84% least to greatest

Mathematics

1 answer:

faust18 [17]3 years ago

5 0

Answer:

.66, 4/5, 84%, .86

Step-by-step explanation:

.66 is already in decimal form.

4/5 converted to decimal form is .8

84% in decimal form is .84

.86 is already in decimal form

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Given constants a and b such that x2 + ax + b has factors (x + 7) and (x + 2) what is a?

dezoksy [38]

Answer:

a=9 , b=14

Step-by-step explanation:

Just do the operation (x+7)(x+2)

x(x)+x(2)+7(x)+7(2)

x^2+2x+7x+14

x^2+9x+14

So a=9 and b=14

8 0

2 years ago

Find the minimum sample size necessary to be 99% confident that the population mean is within 3 units of the sample mean given t

SVEN [57.7K]

Answer:

The minimum sample size required is 207.

Step-by-step explanation:

The (1 - α) % confidence interval for population mean μ is:

$CI=\bar x\pm z_{\alpha /2}\frac{\sigma}{\sqrt{n}}$

The margin of error of this confidence interval is:

$MOE=z_{\alpha /2}\frac{\sigma}{\sqrt{n}}$

Given:

$MOE=3\\\sigma=29\\z_{\alpha /2}=z_{0.01/2}=z_{0.05}=2.576$

*Use a z-table for the critical value.

Compute the value of n as follows:

$MOE=z_{\alpha /2}\frac{\sigma}{\sqrt{n}}\\3=2.576\times \frac{29}{\sqrt{n}} \\n=[\frac{2.576\times29}{3} ]^{2}\\=206.69\\\approx207$

Thus, the minimum sample size required is 207.

3 0

3 years ago

What is C26 ? 12 15 8 30

lapo4ka [179]

Answer:C26 is also a Category of EAD (Employment Authorization Document) provided to immigrant workers in U.S. These are dependents of H1b visa holders commonly referred to as H4-EAD.

Step-by-step explanation:

4 0

3 years ago

You are baking cookies for your class. There are 23 total students in your class and you have baked 12 cookies. Write and solve

mario62 [17]

Answer:

x= 34

Step-by-step explanation:

$\frac{x+12}{2}$ =23

7 0

3 years ago

625 ÷ 62.5 × 30 ÷ 10

Naddik [55]

Answer:

Step-by-step explanation:

Follow the correct order of operations.

There are only multiplications and divisions, so do them in the order they appear from left to right.

625 ÷ 62.5 × 30 ÷ 10 =

= 10 × 30 ÷ 10

= 300 ÷ 10

= 30

7 0

3 years ago