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Alexxx [7]
3 years ago
11

Find: f(g(2)) f(x)=x^2 -3x-2 g(x)=5x-7

Mathematics
1 answer:
REY [17]3 years ago
7 0

Answer:

-2

Step-by-step explanation:

g(2) = 5*2-7 = 3

f(g(2)) = f(3) = 3^2 - 3*3 - 2

= 9-9-2

= -2

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The perimeter of a rectangle is 36m. If its length is increased by 1m and the width is increased by 2m, its area will increase b
maw [93]

Answer:

  80 m^2

Step-by-step explanation:

The given information lets you write two equations involving length (x) and width (y).

  • 2(x +y) = 36 . . . . the perimeter is 36 m
  • (x+1)(y+2) -xy = 30 . . . . increasing the length and width increases area

The second of these equations simplifies to another linear equation, giving a system of linear equations easily solved.

  xy +y +2x + 2 -xy = 30

  2x +y = 28 . . . . . . . subtract 2

Dividing the first equation by 2 gives

  x +y = 18

and subtracting this from the above equation gives ...

  (2x +y) -(x +y) = 28 -18

  x = 10

Then

  y = 18 -10 = 8

The area of the original rectangle is xy = 10·8 = 80 m^2.

4 0
2 years ago
What is the distance between the y intercept of the function f(x)=3(2)^x and the y intercept of the function g(x) represented by
balandron [24]
8units sorry if is wrong
8 0
3 years ago
40% of the students in a school are boys. lf there are 240 boys, how many student are therein the school?
Stells [14]
40/100 = 96/240

Hope this helps
3 0
2 years ago
CAN SOMEONE HELP ME PLEASE ASAP!?
GalinKa [24]

Answer:

true

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5 0
2 years ago
Perfect square less than or equal to 16.​
iren2701 [21]

Answer:

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Step-by-step explanation:

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