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Katen [24]
3 years ago
10

A rectangle has a length of 5x - 15 and a length of 2x + 7. What is the area of the rectangle?​

Mathematics
1 answer:
Sergeu [11.5K]3 years ago
3 0
2(5x-15) + 2(2x+7) =0
10x-30+4x+14 = 0
14x = 16
x = 8/7
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Suppose 12 quarts of pure antifreeze is mixed with 8 quarts of a solution that is 72% antifreeze. Answer the questions below. Do
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2) The sum of three consecutive multiples of 6 is 162. Find the multiples.
Andru [333]

Answer:

48, 54 and 60

Step-by-step explanation:

Let the three multiples be 6x, 6(x+1) and 6(x+2) respectively.

6x+6(x+1)+6(x+2)=162

6x+6x+6+6x+12=162

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Therefore, the three multiples are 6(8), 6(8+1) and 6(8+2)

i.e. 48, 54 and 60

7 0
3 years ago
Warren wants to build a rectangular enclosure for his animals. one side of the pen will be against the barn, so he needs no fenc
Lera25 [3.4K]
L +2w = 500
a = lw

a) l = 500 -2w
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b) The zeros of the above equation are w=0, w=250. The vertex of this quadratic is on the line of symmetry, halftway between the zeros, at w=125 ft.


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Mrs. Logan's class is hiking. They increase their elevation by 100 ft every 2 min. What is the rate of their climbing?
Ainat [17]

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Step-by-step explanation:

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B is the answer

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