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sasho [114]
3 years ago
12

Plsss help I’ll give u brainlest and 10 points

Mathematics
1 answer:
Galina-37 [17]3 years ago
6 0
I think it’s B- additional property of 0
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What is the angle, in degrees, if the Area is 180 square miles and the radius is 42,240 feet?
Savatey [412]

Step-by-step explanation:

the area of a circle (all 360°) is

pi×r²

with r being the radius.

the area of a circle segment is just the corresponding fraction of the whole circle.

so the area of a segment of x degrees is

pi×r² × x/360

in our case we know

pi×42240² × x/360 = 180 mi²

we also know that there are 5280 ft in 1 mile.

so, the radius is actually

42240 / 5280 = 8 miles

and therefore our equation resulting in mi² has to use miles and not ft and has to look that way :

pi×8² × x/360 = 180 mi²

pi×64 × x/360 = 180

pi×64 × x = 180×360

pi×x = 180×360/64 = 1012.5

x = 1012.5/pi = 322.2887598...°

so, the angle of the segment of a circle with the area of 180 mi² and the radius of 8 mi is 322.2887598...°

5 0
2 years ago
What is the approximate average rate of change of the function f(x) = -20(1.3)x^
ollegr [7]

Answer:

c

Step-by-step explanation:

7 0
3 years ago
24x10=?? (Please explain in zero the hero or in 4 square..)
Tamiku [17]
240, you just add a zero to 24, I don't know what you mean by zero the hero of 4 square, hope this helps!
6 0
3 years ago
Read 2 more answers
Help me please i will mark brainliest if correct
aksik [14]

Answer:

-11

8 = 2x + 30

8 - 30 = -22

-22 ÷ 2 = -11

x = -11

Also if you place 2×(-11) + 30 you get 8

8 0
2 years ago
X + 8 = 9. Find the value of x.
algol [13]

Answer:

x = 1

Step-by-step explanation:

x + 8 = 9

=> x = 9 - 8

=> x = 1

6 0
2 years ago
Read 2 more answers
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