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Wewaii [24]
3 years ago
11

-6x-4(-7x-13)=-58 What the answer

Mathematics
1 answer:
taurus [48]3 years ago
4 0

-6x-4(-7x-13)=-58

Multiply the bracket by -4

-6x-4(-7)-4(-13)= -58

-6x+28x+52= -58

22x+52= -58

Move +52 to the other side. Sign changes from +52 to -52.

22x+52-52= -58-52

22x= -110

Divide by 22.

22/22x= -110/22

x= -5

Answer: x= -5

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**Solve by Elimination<br> 3 + 2x - y = 0<br> -3-7y = 10x<br> 7) x =<br> 8) y =
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Answer:

Explanation:

3 + 2x - y = 0
Or 2x - y = -3 (1)

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7 0
2 years ago
The mean sat verbal score is 486, with a standard deviation of 95. use the empirical rule to determine what percent of the score
Pavel [41]
Find the z-scores for the two scores in the given interval.

z=\frac{x-\mu}{\sigma}

For the score x =391, z=\frac{391-486}{95}=\frac{-95}{95}=-1.

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Now you want the area (proportion of data) under the normal distribution from z = -1 to z = 0. The Empirical Rule says that 68% of the data falls between z = -1 to z = 1. But the curve is symmetrical around the vertical axis at z = 0, so the answer you want is HALF of 68%.

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3 years ago
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Answer:

Length = 24 and width = 6.

Step-by-step explanation:

2L + 2W = 60 where L = length and W = width.

The length must be in the 20's to make a perimeter of 60, as there's no number in the 10's or 30's that has 2 consecutive even integers and 40 something is impossible.

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Then the width would be (60 -  2(24)) / 2 =  (60 - 48) / 2

= 6.

That's the answer.

7 0
3 years ago
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