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Alecsey [184]
3 years ago
8

Please help me i am really bad at math

Mathematics
1 answer:
nlexa [21]3 years ago
5 0

Answer:

the expression is -5 + 2. the sum is -3.

Step-by-step explanation:

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What is the shaded portion of the circle
blagie [28]

Answer:

(5\pi-11.6)\ ft^{2}

Step-by-step explanation:

we know that

The area of the shaded region is equal to the area of the sector minus the area of the triangle

step 1

Find the area of the circle

the area of the circle is equal to

A=\pi r^{2}

we have

r=5\ ft

substitute

A=\pi (5)^{2}

A=25\pi\ ft^{2}

step 2

Find the area of the sector

we know that

The area of the circle subtends a central angle of 360 degrees

so

by proportion find out the area of a sector by a central angle of 72 degrees

\frac{25\pi}{360}=\frac{x}{72}\\ \\x=72*25\pi /360\\ \\x=5\pi\ ft^{2}

step 3

Find the area of triangle

The area of the triangle is equal to

A=\frac{1}{2}(2.9+2.9)(4)= 11.6\ ft^{2}

step 4

Find the area of the shaded region

Subtract the area of the triangle from the area of the sector

(5\pi-11.6)\ ft^{2}

8 0
3 years ago
PLS help 10 points & will give brainliest PLEASE bruh
LekaFEV [45]

Answer:

I hope it is correct ✌️

7 0
3 years ago
Will pick brainliest if ur answer is correct
Gnesinka [82]

Answer:

A

Step-by-step explanation:

Hopefully this helps

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I need help, I got 80 and 90 but it said I was wrong...​
Anton [14]

Answer:

I think it is 90 and 100

Step-by-step explanation:

I used this equation: x is the speed of the slower train

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