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3 years ago

Mr. Vlasic needs to buy 2

Mathematics

2 answers:

Genrish500 [490]3 years ago

7 0

Answer: The minimum amount he would have to spend would be $14.01

Step-by-step explanation:

17 students each need two pens: 17*2=34 , Each pack contains 6 pens. The amount of packages you can buy without excessively overbuying would be six pack which would give you 36 pens. The total would be $14.10 Because 6*2.35 = $14.10

Doss [256]3 years ago

3 0

Answer:

the answer will be $14.1

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4)In order to set rates, an insurance company is trying to estimate the number of sick daysthat full time workers at an auto rep

bagirrra123 [75]

Answer:

A sample of 18 is required.

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1 - 0.92}{2} = 0.04$

Now, we have to find z in the Z-table as such z has a p-value of $1 - \alpha$ .

That is z with a pvalue of $1 - 0.04 = 0.96$ , so Z = 1.88.

Now, find the margin of error M as such

$M = z\frac{\sigma}{\sqrt{n}}$

In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

A previous study indicated that the standard deviation was 2.2 days.

This means that $\sigma = 2.2$

How large a sample must be selected if the company wants to be 92% confident that the true mean differs from the sample mean by no more than 1 day?

This is n for which M = 1. So

$M = z\frac{\sigma}{\sqrt{n}}$

$1 = 1.88\frac{2.2}{\sqrt{n}}$

$\sqrt{n} = 1.88*2.2$

$(\sqrt{n})^2 = (1.88*2.2)^2$

$n = 17.1$

Rounding up:

A sample of 18 is required.

3 0

3 years ago

Without graphing, tell whether the point (10, 37) is on the graph of y = 3x + 7.

slava [35]

Answer: YES

Plug in the numbers in your head.

y=3(10)+7

y=30+7

y=37 which is the y intercept

7 0

3 years ago

Least to greatest. 13.01, 13.1, 13.001

Viktor [21]

13.001
13.01
13.1

$13.001=13\dfrac{1}{1000} < 13.01=13\dfrac{1}{100} < 13.1=13\dfrac{1}{10}$

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3 years ago

Read 2 more answers

-3=12y-5(2y-7). Solve for y

Yuliya22 [10]

1. distribute the parentheses.
-3=12y-10y+35

2. Move the constants to the other side
-3-35=12y-10y

3. Subtract the terms
-38=2y

4. Divide by 2 to get y by itself
y=-19

4 0

2 years ago

Read 2 more answers

Solve 3x2 + 4x = 2<br>I need it solved with the quadratic formula

lisabon 2012 [21]

3x2+4x=2
6+4x=2
-6 -6
4x=-4
4 4
x=-1

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3 years ago