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djverab [1.8K]
4 years ago
13

PLEASE HELP ME!! WILL GIVE BRAINLIEST!

Mathematics
1 answer:
sasho [114]4 years ago
5 0

Answer:

A D F

Step-by-step explanation:

Area of rectangle: 80*45=3600

Area of semi-circle: ((60/2)^2)/2*pi=1413

Total area of grass=3600-1413=2187

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22. Ball needs an average of 85 on four tests in science to make the honor oil. What is the lowest
sergey [27]

Answer:

Answer is more at 97.

Step-by-step explanation:

(84+89+70+x)/4>85

(243+x)/4>85

243+x>340

x>340-243

x>97

3 0
4 years ago
The Fortune 500 is comprised of Fortune magazine's annual list of the finite population of the top 500 companies in the U.S. ran
Serjik [45]

Answer:

The standard error of the proportion is 0.0367.

Step-by-step explanation:

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean \mu and standard deviation \sigma, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}.

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

For a proportion p in a sample of size n, the standard error is s = \sqrt{\frac{p(1-p)}{n}}

In this question:

p = 0.16, n = 100

So

s = \sqrt{\frac{0.16*0.84}{100}} = 0.0367

The standard error of the proportion is 0.0367.

4 0
3 years ago
Determine the area of an obtuse triangle with a height<br> of 11 cm and a base of 22 cm
IRINA_888 [86]

Step-by-step explanation:

A

=

h

b

b

2

=

11

·

22

2

=

121

cm²

7 0
3 years ago
Read 2 more answers
If the area of a square is multiplied by 16, the area becomes 25 square inches. find the length x of a side of the square.
IgorLugansk [536]
Area of a square= length^2
16 x length^2 = 25 square inches
length^2 = 25/16 square inches
length = 5/4 inches (B)
3 0
3 years ago
Please help seems easy just can’t figure out the answer
madreJ [45]

Answer:

b is 125

Step-by-step explanation:

8 0
3 years ago
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