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Alla [95]
3 years ago
9

...................Math help....................

Mathematics
1 answer:
frosja888 [35]3 years ago
8 0

Answer:

35

Step-by-step explanation:

First let's find g(7):

g(7) = 2(7)-11

g(7) = 14-11

g(7) = 3

Now we find f(g(7))

f(3) = 3(3²)+7(3)-13

f(3) = 3(9) +21-13

f(3) = 27+21-13

f(3) = 35

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Esther cut a square paper vertically to make two rectangle pieces. Each rectangle had a perimeter of 63 inches.
Studentka2010 [4]

Answer:

Side of the square paper = 21 inches

Step-by-step explanation:

Let the square paper is having measure of each side = a inches

Esther cut this square piece into two pieces.

Let the other side of one rectangle piece = x inches

Perimeter of this piece = 2(a + x) inches

Similarly dimensions of the other rectangular piece will be = a inches × (a - x) inches

Perimeter of this piece = 2[a + (a - x)]

Since both the rectangular pieces have the same perimeter = 63

So, 2(a + x) = 2[a + (a - x)] = 63

2(a + x) = 2(2x - x)

a + x = 2a - x

2a - a = 2x

a = 2x

x = \frac{a}{2}

Therefore, Perimeter = 2(a + x) = 2(a + \frac{a}{2}) = 63

2\times \frac{3a}{2} = 63

3a = 63

a = 21

Therefore, measure of the sides of the square is 21 inches.

5 0
3 years ago
9 (9+ 7 - 4) = *<br> need more help . sorry if I’m being annoying
finlep [7]

Answer:

108

Step-by-step explanation:

6 0
2 years ago
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If y=x^2+2x+3 find the falue of Y when x=3
yarga [219]
Y=18 is the correct answer
5 0
3 years ago
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6yd times 12yd dived by 1 half
Vsevolod [243]

Answer:

36

Step-by-step explanation:

12 x 6 = 72 divided by 1/2 = 36

6 0
3 years ago
Given M is the midpoint of segment TV. TM = 7x -2 and MV = 4x + 13, find TV.
SpyIntel [72]

Answer:

TV = 66

Step-by-step explanation:

Since M is the midpoint, that means the two subsegments are equal so

7x - 2 = 4x + 13

7x - 4x - 2 = 13

7x - 4x = 13 + 2

3x = 15

x = 5

then

TM = 7x - 2 = 7*5 -2 = 35 - 2 = 33

TV = 2 * TM = 2 * 33 = 66

7 0
3 years ago
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