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Novay_Z [31]
3 years ago
15

How to solve -2(1-7n)-5n=34

Mathematics
2 answers:
emmainna [20.7K]3 years ago
8 0

-2(1-7n)-5n=34

distributive property

-2+14n-5n=34

combine like terms

-2+9n=34

+2       +2

9n=36

÷9   ÷9

n=4

OLEGan [10]3 years ago
6 0

-2(1-7n)-5n=34

Multiply the bracket by -2

(-2)(1)=-2

(-2)(-7n)=14n

-2+14n-5n=34

-2+9n=34

Move -2 to the other side. Sign changes from -2 to +2.

-2+2+9n=34+2

9n=34+2

9n=36

Divide by 9 for both sides

9n/9=36/9

n=4

Answer: n=4

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If 34 percent of 60 million barrels is gasoline and 29 percent of 60 million barrels is desil how many more barrels are there of
Andre45 [30]

The difference between 34 percent and 29 percent is :

34 - 29 = 5 percent.

60 million times 5% = 60 x 0.05 = 3 million

to check:

60 million x 34% = 20,400,000 barrels

60 million x 29% = 17,400,000 barrels

20,400,000 - 17, 400,000 = 3,000,000 barrels

There are 3 million more barrels of gasoline.

7 0
3 years ago
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3 years ago
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Find the value of the variable(s). If your answer is not an integer, leave it in simplest radical form.
algol13
Answers:
x = 24
y = 8√3
Explanation:

1) Since, the given triangle is a right triangle, and you have both an angle and the hypotenuse length, you can use some trigonometric ratios to find the variables.

2) The variables given represent:

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4 0
3 years ago
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