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Zepler [3.9K]
3 years ago
10

Given: 2x + 30 = -4(5x -2); Prove: x = -1

Mathematics
1 answer:
Lady_Fox [76]3 years ago
6 0
2x + 30 = -20x + 8
2x + 20x = 8 - 30
22x = -22
x = 1
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Sidana [21]

3/15 equals 1/5 because 3/3=1 and 15/5=5. So B is the correct answer. 1/5

7 0
4 years ago
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What is the measure of angle 6, if lines x and y are parallel, and angle 7 measures 121°? 121° 69° 59° 49°
Marianna [84]

Answer:

59°

Step-by-step explanation:

From the diagram, shown in the attachment line x and y are parallel lines.

Angle 7 and angle 6 are angles on a straight line.

The two angles will add up to 180 degrees.

\angle 7+\angle 6=180

But angle 7 measures 121°.

This implies that:

121+\angle 6=180

Solve for angle 6 to get;

\angle 6=180-121\

\angle 6=59\degree

7 0
4 years ago
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viva [34]
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6 0
4 years ago
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a gallon of gasoline cost 30 cents in 1960 and $1.30 in 1980. what was the percent increase in the price of gasoline
hammer [34]
A gallon of gasoline cost 30 cents in 1960 an 
$1.30 in 1980
percent increase in the price = ?
first we have to convert cents into dollars so that both amounts have to be in same unit
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now for calculating percent increase divide this with the new amount and than multiply with 100
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5 0
3 years ago
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sattari [20]

Answer:

480 I believe if you are asking what the interest is when it is 4% APR for 3 years.

Step-by-step explanation:

4 0
3 years ago
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