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jolli1 [7]
3 years ago
5

Help me from 3 through 8

Mathematics
1 answer:
skad [1K]3 years ago
7 0

Answer:

3)x=−9  and x=4

4)x=−12  and x=−5

5)x=8  and x=14

6)x=−7  and x=3

7)x=-1 2/3 and x = 1/4

8)x=2/5

Step-by-step explanation:

Hope this helps

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If -2 is added to a number and the sum is doubled, the result is -15 less than the number.
VMariaS [17]

The required number is 19 given that -2 is added to a number, the sum is doubled and the result is -15 less than the number. This can be obtained by assuming the number as x, converting the given conditions to algebraic expression, forming algebraic equation and solving for x.

<h3>Find the required number:</h3>

Here in the question it is given that,

  • -2 is added to a number
  • The sum is doubled
  • The result is -15 less than the number

We have to find the required number.

Let the required number be x.

⇒ -2 is added to the number ⇒ -2 + x

⇒ the sum is doubled ⇒ 2(-2 + x)

⇒ the result is -15 less than the number ⇒ 2(-2 + x) = x -(-15)

2(-2 + x) = x + 15

⇒ - 4 + 2x = x + 15

⇒ x = 19

Hence the required number is 19 given that -2 is added to a number, the sum is doubled and the result is -15 less than the number.

Learn more about algebraic expression and equation here:

brainly.com/question/953809

#SPJ9

6 0
2 years ago
Write some thing good in answer.
frosja888 [35]

Answer:

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8 0
3 years ago
What are some prime numbers between 80 and 90?
alekssr [168]
83 and 89 are prime numbers between 80 and 90.
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3 years ago
What is the sign of -9. (0/-3)
svetoff [14.1K]

Answer:

C zero

Step-by-step explanation:

-9×(0/(-3))= (-9)×0

=0

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3 years ago
Q
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What’s the answer bcuz I need it right now?

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