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Alla [95]
2 years ago
9

How do I solve this -1/2x-7=-11

Mathematics
2 answers:
tankabanditka [31]2 years ago
7 0

Answer:

Step-by-step explanation:

-1/2x -7=-11

-1/2x +4=0

4=1/2x

x=8

Snowcat [4.5K]2 years ago
5 0

Answer:

x = 8

Step-by-step explanation:

FIrst you move the constant to the right so we add 7 to -11.

Now we have -1/2x = -11+7

Add -11 and 7 which gives us -4

Now we have -1/2x = -4

Multiply both sides by -2

We end up with 8 as X

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The Census Bureau reports that 82% of Americans over the age of 25 are high school graduates. A survey of randomly selected resi
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Answer:

Mean = 910.2

Standard deviation = 12.8

Step-by-step explanation:

82% over the age of 25 are high school graduates.

A survey randomly selected students of certain country included 1110 who were over the age of 25 and 871 of them were high school.

n = 1110

p = 82% = 0.82

q = 1 - 0. 82

q = 0.18

Mean = np

= 1110*0.82

= 910.2

Standard deviation = √npq

= √ 1110*0.82*0.18

=√163.836

= 12.8

6 0
3 years ago
У = 3х + 1<br> у= 2х<br> Using substitution
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3 years ago
What are the solutions to the quadratic equation x^2-15x+36=0
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or
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The solutions are 3 and 12
7 0
3 years ago
Tow decimals that are equivalent to 7.7.
PolarNik [594]
7.7 is equivalent to its self, and you can only make more equivalents by adding zero’s on either side, it’s better to add after decimal.

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3 years ago
What is 92.583 rounded to the nearest tenth?
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The answer is 93. its very simple to round well mosly for me cause im smart
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