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3 years ago

I need help please............

Mathematics

1 answer:

yuradex [85]3 years ago

8 0

With the formula in that form, the first thing to do is to divide both sides by 2 to get $\frac{P}{2}=l+w$ . Subtract w from both sides and you have solved for l: $\frac{P}{2}-w=l$ , third choice down.

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What is the approximate area of the shaded region?

krok68 [10]

If this is square So,
area of the shaded region = area of square - area of circle r=1/2 × 7 = 3.5
= (S×S) - (Pi × r^2)
= (7×7) - (3.14 × (3.5)^2 ) = 10.535 cm

8 0

3 years ago

Read 2 more answers

The City Parks Department had 3 2/3 tons of gravel. Then they used 1 1/2 tons to cover the trails in neighborhood parks. How muc

natima [27]

Answer:

2 1/6

Step by step: subtract 1 1/2 from 3 2/3

8 0

2 years ago

A random sample of the actual weight of 5-lb bags of mulch produces a mean of 4.963 lb and a standard deviation of 0.067 lb. If

dsp73

Answer: B) 4.963±0.019.

Step-by-step explanation:

Confidence interval for population mean ( when population standard deviation is not given) is given by :-

$\overline{x}\pm t^*\dfrac{s}{\sqrt{n}}$

, where $\overline{x}$ = Sample mean

n= Sample size

s= sample standard deviation

t* = critical t-value.

As per given:

n= 50

Degree of freedom = n-1 =49

$\overline{x}= 4.963\ lb$

s= 0.067 lb

For df = 49 and significance level of 0.05 , the critical two-tailed t-value ( from t-distribution table) is 2.010.

Now , substitute all values in the formula , we get

$4.963\pm (2.010)\dfrac{0.067}{\sqrt{50}}\\\\ 4.963\pm (2.010)(0.0094752)\\\\ 4.963\pm0.019045152\approx4.963\pm0.019$

Hence, a 95% confidence interval for the mean weight (in pounds) of the mulch produced by this company is $4.963\pm0.019$ .

Thus , the correct answer is B) 4.963±0.019.

7 0

3 years ago

Pls look at this pic and help like i don't understand i will mark u as brainliest

dimulka [17.4K]

Answer:

48 cubic yard

Step-by-step explanation:

$volume \: of \: pyramid \\ = area \: of \: base \times height \\ = {4}^{2} \times 3 \\ = 16 \times 3 \\ = 48 \: {yard}^{3} \\$

3 0

3 years ago

I have data on lower class, middle class and upper class. What is a mathematical process that would provide a simple numerical s

Anna007 [38]

Answer:

You can find the mean, by adding all the terms in each data set and dividing by the number of terms. For example, if there were four data points, you would add them all up and divide by four.

hope this helps!

6 0

2 years ago