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QveST [7]
4 years ago
6

Find the area of the semicircle.

Mathematics
2 answers:
MrMuchimi4 years ago
5 0

Answer:

8 pie

Step-by-step explanation:

area of a circle is pie(radius squared)

radius is 4

4 squared is 16

divide by two because its a semi circle

Kazeer [188]4 years ago
3 0

Answer:

8pi

Step-by-step explanation:

A=pi*r^2

A=pi(4^2)

A=16pi

16pi would be the area if the circle was complete, but since this is a semicircle you just have to divide by two which would give us:

A=8pi

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Simplify the following expression and write it in an exponential function form.
Sergio039 [100]

Answer:

1/4 b^9

Step-by-step explanation:

(b^11 b^-7)/4b^-5

We know x^y * x^z = x^(y+z)

b^11 * b^ -7 = b^ (11-7) = b^4

(b^11 b^-7)/4b^-5

b^4 / 4 b^-5

We know x^y / x^z = x^(y-z(

b^4 / b^-5 = b^(4 - -5) = b^(4+5) = b^9

1/4 b^9

7 0
3 years ago
HEEEEEEEEELLLLLLLLLLLLPPPPPPPPPPP ASAP
VLD [36.1K]

Answer:

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Step-by-step explanation:

What would you need help with? C:

3 0
3 years ago
27x + 30% - 17x -1400 + 80<br> solve for x show your work
s2008m [1.1K]

Answer:

-23,711.9

Step-by-step explanation:

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5 0
3 years ago
Concrete is made by mixing screenings cement and sand in the ratio 3:1:15. How much sand would be needed to make 125 tons of con
alekssr [168]

Answer:

=    98.7 tons

Step-by-step explanation:

ratio =   3:1:15

amount of sand needed =    (15/19)*125      /  3 + 1 +15  =19

7 0
3 years ago
What would happen if a nation had an unlimited supply of a certain resource?
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the country will lack that particular resource and the country will lack the necessary products from that resource.

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