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Mariulka [41]
3 years ago
9

Name the values of the 5s in 5,500

Mathematics
2 answers:
Mademuasel [1]3 years ago
6 0

Answer:

5 thousand and 5 hundred.  

Step-by-step explanation:

enot [183]3 years ago
5 0

Answer:

uno dos tres

Step-by-step explanation:

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Last year Victoria paid £354 for her car insurance
Fed [463]

Answer:

the price decreased by 7.06 percent

Step-by-step explanation:

100/354x329=92.93785311

100-92.93785311=7.06

3 0
2 years ago
A packing operator can assemble 4 cardboard boxes in 5 minutes. At this rate, how many boxes can she assemble in 25 minutes?
lukranit [14]

Answer:

A. 20

Step-by-step explanation:

look at this step:

4 : 5 = X : 25

X = 4×25/5 = 100/5 = 20

5 0
2 years ago
Read 2 more answers
In the past, 21% of all homes with a stay-at-home parent, the father is the stay-at-home parent. An independent research firm ha
Afina-wow [57]

Answer:

A sample size of 79 is needed.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence level of 1-\alpha, we have the following confidence interval of proportions.

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which

z is the zscore that has a pvalue of 1 - \frac{\alpha}{2}.

For this problem, we have that:

\pi = 0.21

The margin of error is:

M = z\sqrt{\frac{\pi(1-\pi)}{n}}

95% confidence level

So \alpha = 0.05, z is the value of Z that has a pvalue of 1 - \frac{0.05}{2} = 0.975, so Z = 1.96.  

What sample size is needed if the research firm's goal is to estimate the current proportion of homes with a stay-at-home parent in which the father is the stay-at-home parent with a margin of error of 0.09?

A sample size of n is needed.

n is found when M = 0.09. So

M = z\sqrt{\frac{\pi(1-\pi)}{n}}

0.09 = 1.96\sqrt{\frac{0.21*0.79}{n}}

0.09\sqrt{n} = 1.96\sqrt{0.21*0.79}

\sqrt{n} = \frac{1.96\sqrt{0.21*0.79}}{0.09}

(\sqrt{n})^{2} = (\frac{1.96\sqrt{0.21*0.79}}{0.09})^{2}

n = 78.68

Rounding up to the nearest whole number.

A sample size of 79 is needed.

4 0
3 years ago
What is -15x=0 solution
cricket20 [7]
Here is the method for solving that equation:

Step #1:  Write the equation:

             -15x = 0

Step #2:  Divide each side of the equation by -15 :

                 <u>x = 0</u>
3 0
3 years ago
Find the sum of the angles of a 12 sided polygon
Verizon [17]
The formula for the sum<span> of the interior </span>angles of a polygon<span> is equal to (n-2)*180. the </span>polygon<span> has </span>12<span>sides, so the </span>sum<span> of the interior </span>angles<span> of the </span>polygonis equal to (12<span>-2)*180 = 10*180 = 1800 degrees.</span>
4 0
2 years ago
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