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densk [106]
3 years ago
11

To begin solving this system of linear equations by elimination you can add the equations. 3x + 2y = 38 5x – 2y = -30 8x = 8 Thi

s step works because of the A. distributive property B. commutative property 0 0 0 0 O c. multiplication property of equality O D. addition property equality
Mathematics
1 answer:
WITCHER [35]3 years ago
3 0

Answer:

D

Step-by-step explanation:

Addition property of equality

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It's 2/5. hope it will help you!
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Solve each compound inequality and graph the solution.
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4 0
3 years ago
Suppose 12% of the students chose to study French their freshman year, and that meant that there were 21 such students. How many
AleksAgata [21]

Answer:

154 students

Step-by-step explanation:

First get the total number of students .

This can be gotten by

12% of A = 21

Where A represents the total number of students.

12% represents the % of A that chose to study French and 21 is the number of students that studied French .

Therefore,

12% /100% x A = 21

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Divide both sides by 0.12

0.12/0.12 x A = 21/0.12

A = 175

The total number of students is 175.

If 21 chose to study French their freshman year ,number of students that chose not to will be total number of students minus number of those who chose to study French.

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175 - 21

= 154

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4 0
3 years ago
Solve the equation for y (picture below)<br> Please show work and solve as much as you can
Alina [70]
2)
4x-10y=12

Subtract 4x from each side.
-10y=-4x+12

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3)
13=1/6y+2x

Subtract 2x from each side.
-2x+13=1/6y

Multiply both sides by 6.
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Flip it around.
y=-12x+78

Hope this helps!
5 0
3 years ago
A road crew much repave a road that is 4/5 miles long. They can repave 1/20 miles each hour. How long will it take the crew to r
lutik1710 [3]

Answer:

16 hours

Step-by-step explanation:

Multiply the 4/5 by 4 to get the denominator as 20. So you do 4 x 4 which equals 16 and 5 x 4 which equals 20 so you get 16/20 miles or 16 hours.

3 0
3 years ago
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