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2 years ago

Find the Area of the figure below, composed of a rectangle with two semicircles removed. Round to the nearest tenths place.

Mathematics

1 answer:

Allisa [31]2 years ago

6 0

Answer:

21.8

Step-by-step explanation:

hii so basically first we find the area of the 9 by 8 and subtract the area of the semicircles.

area of circles are πr^2, so in this situation

π4^2 which is 16π.

with this, the semicircle which is half a circle would give us

16π/2 which is 8π.

but then, we have two semicircles removed so we would have as an answer:

(9*8)-8π+8π

72-16π

then you would have to round so

16π is around 50.2

so 72-50.2 is 21.8

i hope this helped you <33

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Tcecarenko [31]

8 candles and 16 bars of soap.

You can solve this by setting up a system of equations.

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3 0

2 years ago

HELP!!!

ella [17]

Answer:

120

Step-by-step explanation:

We are given that the function for the number of students enrolled in a new course is $f(x) = 4^{x}-1$ .

It is asked to find the average increase in the number of students enrolled per hour between 2 to 4 hours.

We know that the average rate of change is given by,

$A = \frac{f(x)-f(a)}{x-a}$ ,

where f(x)-f(a) is the change in the function as the input value (x-a) changes.

Now, the number of students enrolled at 4 = f(4) = $f(x) = 4^{4}-1$ = 255 and the number of students enrolled at 2 = f(2) = $f(x) = 4^{2}-1$ = 15

So, the average increase $A=\frac{f(4)-f(2)}{4-2}$ = $A=\frac{255-15}{4-2}$ = $A=\frac{240}{2}$ = 120.

Hence, the average increase in the number of students enrolled is 120.

3 0

3 years ago

Tessellations that use only one type of regular polygon are called semi-regular tessellations. A. True B. False

Sauron [17]

The answer is B... False. Tansellations that use only one type of regular polygon are not called semi-regular tessellations

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3 years ago

How can you add eight 8's to get the number 1,000? (only use addition)

Fudgin [204]

The answer is 888+88+8+8+8

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3 years ago

Exact solutions. X^2-5x-1=0

Romashka [77]

Answer:

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Step-by-step explanation:

Quadratic formula:

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2 years ago