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3 years ago

Plzzzzzzzzzz help plzzzzzz

Mathematics

2 answers:

lapo4ka [179]3 years ago

7 0

Answer:

0.0045

Step-by-step explanation

4.5 * 10^-3

10^-3 = 10/10/10 = 0.001

4.5 * 0.001 = 0.0045

ad-work [718]3 years ago

4 0

4500
Brainliest
Shh xbxhz

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HELPPPPP MEEEEE ASAPPPPPPPPPPPPPPPPPP!

AlekseyPX

Answer:

D. 220.16 Square feet

Step-by-step explanation: The shaded area is the space in the square not filled by the circle. So we need to find the area of the circle. The formula for area of a circle is $A=\pi r^{2}$ . So we fill in this equation with the information we already know:

$A=\pi 16^{2}$

$A=3.14*16^{2}$ Simplify the exponents

$A=3.14*256$ Multiply

$A=803.84$

So now we know the area of the circle we have to find the area of the square because the circle is inside the square. It is a simple $32*32$ which is 1,024. Since we are looking for the shaded area we will subtract the area of the circle from the area of the square because the circle is not shaded.

1024-803.94= 220.16 square feet

7 0

3 years ago

Read 2 more answers

A study done by researchers at a university concluded that 70 70% of all student athletes in this country have been subjected t

Alecsey [184]

Answer:

The margin of error is 0.0206 = 2.06 percentage points.

The 95% confidence interval for the proportion of all student athletes in this country have been subjected to some form of hazing is (0.6794, 0.7206).

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:

$n = 1900, \pi = 0.7$

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 $Z = 1.96$ .

The margin of error is:

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

$M = 1.96\sqrt{\frac{0.7*0.3}{1900}} = 0.0206$

The margin of error is 0.0206 = 2.06 percentage points.

The lower limit of this interval is:

$\pi - M = 0.7 - 0.0206 = 0.6794$

The upper limit of this interval is:

$\pi + M = 0.7 + 0.0206 = 0.7206$

The 95% confidence interval for the proportion of all student athletes in this country have been subjected to some form of hazing is (0.6794, 0.7206).

6 0

4 years ago

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Gala2k [10]

Answer:

fun

Step-by-step explanation:

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3 years ago

What is the selling price of a table ticketed at $1,234 with a 22% discount? A. $962.52 B. $271.48 C. $926.25 D. $1,000.00

vovangra [49]