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wlad13 [49]
2 years ago
7

Please helppppppppppppp

Mathematics
1 answer:
Elenna [48]2 years ago
3 0

Answer:

f(-7) = 2

Step-by-step explanation:

f(x) = x + 9

We want to find f(-7)

f(-7) = -7 + 9

-7 + 9 is the same thing as saying 9 - 7

9 - 7 = 2

So f(-7) = 2

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No.

Step-by-step explanation:

Waves are energy moving through the matter, but they leave the matter in the same place as they pass through.

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3 years ago
2/3x -2 =2 what does x equal
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Answer:

x=6

Step-by-step explanation:

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4 years ago
2y • 3 when y = 8 this is so hard
emmainna [20.7K]
2y * 3
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A painting is 4 feet long.A photo frame is 10 inches long.How many inches longer is the painting then the photo frame?
Galina-37 [17]
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3 0
3 years ago
Need help with these math questions please.
Bas_tet [7]

Answer:

8 - 2π square units.

π/16 - 1/8 square units.

6π - 9√3 square units.

Step-by-step explanation:

The area of the square = 2√2 * 2√2

= 2*2*2

= 8.

The area of the circle = πr^2

= π * [ ( 2√2)/ 2) ]^2

=  π (√2)^2

=  2π.

Second Question:

The area of the circle = π(1/2)^2 = π/4.

Finding the area of the square:

1^2 = 2x^2

x^2 = 1/2

So the area of the square = 1/2

So the area of the red part = 1/4 ( π/4 - 1/2).

= π/16 - 1/8.

Third question

Area of the circle = 6^2 * π = 36π.

Now 60 degrees is 1/6 of 360 degrees so the are of the sector is 6π.

The area of the segment = 6π -  0.5 * 6^2 sin 60

= 6π - 18√3/2

= 6π - 9√3 square units.

6 0
3 years ago
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