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olga2289 [7]
3 years ago
5

Find (f•g) (-1) Let f(x) =-2x-1 and g(x) =x^2 -1

Mathematics
1 answer:
umka21 [38]3 years ago
4 0

Answer:-1

Step-by-step explanation:

let g(x) foil into f(x)   =>    (-2(x^2-1)-1)

                                      = -2x^2+1

then put (-1) into the formula => -2(1)+1

                                                 = -1

that is the answer^^

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one room length 12.8 and breadth equals to 850 CM inside that room there is a bad length is 300 cm and breadth is 400 cm find th
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Answer:

Area = 968000cm^2

Step-by-step explanation:

To be able to answer this question properly. I'll assume the length of the room is in meters.

So for the room, we have:

Length = 12.8m

Breadth = 850cm

For the bed, we have:

Length = 300cm

Breadth = 400cm

First, we calculate the surface area of the room.

A_1 = 12.8m * 850cm

Convert all units to cm

A_1= 12.8*100cm * 850cm

A_1= 1 088 000 cm^2

Next, we calculate the area of the bed

A_2 = 300cm * 400cm

A_2 = 120000cm^2

The area of the space left  is the difference between A1 and A2

Area = A_1 - A_2

Area = 1088000cm^2 - 120000cm^2

Area = 968000cm^2

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Over five different weeks, Irina tracked the hours she spent exercising and the hours she spent playing video games. What is the
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By using pythagoras theorem where
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