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Leokris [45]
2 years ago
10

Help help again ..2 more :/ thank you again ..

Mathematics
1 answer:
Elis [28]2 years ago
8 0
8^2 + 12 - 2(8)
64 + 12 - 16
76 - 16
60
so your answer would be 60
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Suppose the length of the base b of a rectangle is increased by 20 percent and the length of the altitude h is increased by 40 p
jek_recluse [69]

9514 1404 393

Answer:

  (a) 1.2b

  (b) 1.4h

  (c) A = 1.68bh

  (d) 68%

Step-by-step explanation:

(a) If 20% of b is added to b, you have ...

  b + 0.20b = 1.2b

__

(b) Similarly, if 40% of h is added to h, you have ...

  1.4h

__

(c) The area of the new rectangle is the product of the new dimensions:

  A = (1.2b)(1.4h)

  A = 1.68bh

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(d) The original rectangle area is A = bh, so the percentage change can be computed as ...

  (A'/A -1)×100% = ((1.68bh)/(bh) -1)×100% = (1.68 -1)×100% = 68%

The given increases in base and height increase the area by 68%.

5 0
3 years ago
ASAP! anyone know the answer to this and possible show me how to solve it.
kramer

Answer:

n = - 3

Step-by-step explanation:

Slope line r: (5-1)/(3+1) = 4/4 = 1

Slope of the perpendicular line: -1

p=(-4,4)

y-intercept: 4 - (-1)(-4) = 4 - 4 = 0

y = -x

(3,n) x = 3 and y = n

n = - 3

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There are 8 pencils in a package. How many packages will be needed for 28 children if each child gets 4 pencils
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14 packages of pencils will be needed
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