1.

1 answer:

3 0

Question 1:

 5x + 10 = 5x –8

5x - 5x + 10 = -8

10 ≠ -8

Hence, the answer is A.

Question 2:

2(4y –1) = 6

8y - 2 = 6

8y = 6 + 2

8y = 8

y = $\frac{8}{8}$ 

y = 1

Hence, the answer is B.

Question 3:

6x + 10 –4x = –4 –11

2x = -15 -10

2x = -25

x = $\frac{-25}{2}$

x = -12.5

Hence, the answer is B.

Question 4:

2(2x –5 –4) = 160 –17

4x -10 -8 = 143

4x -18 = 143

4x = 143 + 18

4x = 161

x = $\frac{161}{4}$

x = 40.25

Hence, the answer is A.

Question 5:

2(3x –7) + 18 = 10

6x - 14 + 18 = 10

6x + 4 = 10

6x = 10 -4

6x = 6

x = $\frac{6}{6}$

x = 1

Hence, the answer is A.

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4 years ago

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nika2105 [10]

all expression represent how much Judith spent.

Answer:

Question:

Judith's grandmother paid her x dollars a week to mow the lawn during the summer. Judith decided to save some of her money and spend the rest. For the first 4 weeks, Judith put $10 per week into savings. For the next 8 weeks, she put $15 per week into savings.

Solution given:

Judith's grandmother paid her x dollars a week

it means Judith's income per week is x.

Judith decided to save some of her money and spend the rest.

For the first 4 weeks, Judith put $10 per week into savings.

it mathematical expression it is expressed as:

4(x-$10)

again

For the next 8 weeks, she put $15 per week into savings.

it mathematical expression it is expressed as:

8(x-$15)

now,