2 years ago

Can omeone help i cant solve this

Mathematics

1 answer:

Bumek [7]2 years ago

5 0

Answer:

the answer is forty five

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The sum of the areas of two circles is 8pie square meters. Find the length of a radius of each circle ifone of them is twice as

NeX [460]

Nice

area=pir^2
the areas are
pir^2+pi(2r)^2
they add to 8pi

8pi=pir^2+pi(2r)^2
undistribute pi
8pi=pi(r^2+(2r)^2)
divide both sides by pi
8=r^2+(2r)^2
expand
8=r^2+4r^2
add
8=5r^2
divide by 5
8/5=r^2
sqrt both sides
√(8/5)=r
double since it is double
2√(8/5) is radius of bigger aka (4√10)/5

radius=(4√10)/5

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3 years ago

Ahmad lost 50 dollars from his pocket. Write a signed number to represent this change.

IRINA_888 [86]

Answer:

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Step-by-step explanation:

it could be X-50=?

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3 years ago

Tema: Operadores Matemáticos a*b=4a+5b

zhenek [66]