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mario62 [17]
3 years ago
10

What is the area of a semicircle with a diameter of 21.5

Mathematics
1 answer:
denis-greek [22]3 years ago
7 0

Area of a circle = PI x R^2

r = 1/2 diameter

r = 21.5/2

r = 10.75

Area of circle = 3.14 x 10.75^2 = 3.14 x 115.5625 = 362.86625 square units.

A semicircle is half a circle:

Area of semicircle = 362.86625 / 2 = 181.433125 square units (round the answer as needed).

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Victor big 30 chocolate chip cookies, eating peanut butter cookies and 24 sugar cookies he wants to split them into equal and Id
romanna [79]
The question is not clear.
I will take a guess at what you meant
You have 30 Choc Chip cookies
and 24 sugar cookies..
What is the largest divisor or factor of 30 and 24 have in common?
30 Factors (1,2,3,5,6,10,15,30)
24 Factors (1,2,3,4,6,8,12,24)
6 is the largest factor
So you can create 6 bags:
6 ×5 is 30
6×4 is 24
containing 5 Choc Chip and 4 sugar in each bag.
3 0
3 years ago
"Ben can type 153 words in 3 min. At this rate how many words can he type in 10 min.?"
boyakko [2]
Ben can type 510 words in ten minutes.

153 words/3 minutes = 153/3
= 153 words ÷ 3 / 3 min ÷ 3
= 51 words / 1 min

51 x 10 (minutes) = 510.
4 0
3 years ago
Read 2 more answers
It has been hypothesized that overall academic success for college freshmen as measured by grade point average is a function of
liubo4ka [24]

Answer:

23.2586 ; IQ ; hours spent studying per week

Step-by-step explanation:

Given the regression model:

y = 6.9+0.055x1 +0.107x2 + 0.0853X3.

IQ scores = (X1)

Hours spent studying each week = (X2),

one's high school average = (x3)

The multiple standard error is 6.313 and R^2=0.826.

What is the predicted GPA for a student with a IQ of 108, 32 hours spent studying per week and a high school average of 82?

X1 = 108 ; X2 = 32 ; X3 = 82

y = 6.9 + 0.055(108) + 0.107(32) + 0.0853(82)

y = 23.2586

B.

The Independent variable with the smallest effect on GPA is the variable with the smallest Coefficient, which is IQ with a Coefficient of 0.055

C.

The Independent variable whiae unit change has the greatest effect on GPA is X2, hours spent studying per week as it has the highest Coefficient of all independent variables with a Coefficient value of 0.107.

5 0
3 years ago
Simplify the expression: 7(3x + 5y)
user100 [1]
I think the answer is 21x+35y
5 0
2 years ago
Read 2 more answers
Please help!
Yuki888 [10]
The answer would be B) 1.04%
6 0
2 years ago
Read 2 more answers
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