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4vir4ik [10]
3 years ago
6

If the sum of a number and nine is doubled, the result is four less than the number. Find the number

Mathematics
1 answer:
Crazy boy [7]3 years ago
8 0

Answer:

- 22

Step-by-step explanation:

let the number be n then 2(n + 9) is the sum of the number and nine doubled, thus

2(n + 9) = n - 4 ← 4 less than the number

Distribute parenthesis

2n + 18 = n - 4 ( subtract n from both sides )

n + 18 = - 4 ( subtract 18 from both sides )

n = - 22

The number is - 22

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Pie
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7 0
3 years ago
Select two statements that are true about the equation y+4=-8(x-2)
bezimeni [28]

Answer:

Step-by-step explanation:

y + 4 = -8(x - 2)

I dont know the statements that u have but maybe I can guess one...or two

slope = -8

points used were : (2,-4)

y + 4 = -8(x - 2)

y + 4 = -8x + 16

y = -8x + 16 - 4

y = -8x + 12 ............slope intercept form

8x + y = 12 .......standard form

x intercept = (3/2,0)

y intercept = (0,12)

any of that answer ur question ?

5 0
3 years ago
Read 2 more answers
HELP ME PLSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSSS URGENTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTT
bazaltina [42]

9514 1404 393

Answer:

  90 m²

Step-by-step explanation:

The given linear dimensions have the ratio ...

  red/blue = (6 m)/(4 m) = 3/2

The ratio of areas is the square of the ratio of the linear dimensions:

  (red area)/(blue area) = (3/2)²

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5 0
2 years ago
Triangle PQR has vertices at the following coordinates : P(0,1) Q(3,2) R(5,-4) . Determine wether or not triangle PQR is a right
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Here is my answer. Hope this help.

8 0
3 years ago
What common base can be used to rewrite each side of the resulting equation? 2 4 16 32
Scorpion4ik [409]

Answer:2

Step-by-step explanation:

6 0
3 years ago
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