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2 years ago

136+12x=-4(1-2x) simplify

Mathematics

1 answer:

lawyer [7]2 years ago

8 0

Answer:

x=-35

Step-by-step explanation:

136+12x=-4(1-2x)

136+12x=-4+8x

+4 +4

140+12x-12x=8x-12x

140/-4=-4x/-4

x= -35

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kari74 [83]

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2 years ago

If Joe drives 186.83 miles on a business trip, and the reimbursement from his company is $13.08. At what rate is Joe's employer

kirill115 [55]

Answer:

7 cents/mile

Step-by-step explanation:

You are looking for a unit rate of cents per mile.

Change the dollar amount to cents, and divide by the number of miles.

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2 years ago

Sum of one-half of a number and 4 is -16. find the number

Lady_Fox [76]

X is the number
sum means add

sum of half a number and 4 means
(x/2)+4
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2 years ago

Are two lines parallel, perpendicular or neither 3x+7y=15 and 7x-3y=6

maw [93]

Answer:

The lines are perpendicular

Step-by-step explanation:

we know that

If two lines are parallel, then their slopes are equal

If two lines are perpendicular, then their slopes are opposite reciprocal (the product of their slopes is equal to -1)

we have

$3x+7y=15$ ----> equation A

isolate the variable y

$7y=-3x+15$

Divide by 7 both sides

$y=-\frac{3}{7}x+\frac{15}{7}$

The slope of the line A is $m_A=-\frac{3}{7}$

$7x-3y=6$ ----> equation B

isolate the variable y

$3y=7x-6$

Divide by 3 both sides

$y=\frac{7}{3}x-2$

The slope of the line B is $m_B=\frac{7}{3}$

Compare the slope of both lines

$m_A=-\frac{3}{7}$

$m_B=\frac{7}{3}$

$m_A \neq m_B$ ----> the lines are not parallel

Find the product of the slopes

$-\frac{3}{7}(\frac{7}{3})=-1$ ----> the lines are perpendicular

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2 years ago

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AVprozaik [17]

Answer:

Step-by-step explanation:

6 0

2 years ago