Answer:

15 out of 20 is 75% out of 100%

Step-by-step explanation:

20×5=100

15×5=75

**Answer:**

<u>Option B</u>

**Step-by-step explanation:**

The question is as following:

Step Work Justification

1 2x + 6x − 4 = 12

2 8x − 4 = 12

3 8x = 16

4 x = 2

Which of the following has all of the correct justifications Wyatt used to solve this equation?

A. Distributive property. 2. Combine like terms. 3. Addition property of equality. 4. Division property of equality.

B. Multiplication property of equality. 2. Combine like terms. 3. Addition property of equality. 4. Division property of equality.

C. Distributive property. 2. Combine like terms. 3. Subtraction property of equality. 4. Division property of equality.

D. Multiplication property of equality. 2. Combine like terms. 3. Subtraction property of equality. 4. Division property of equality

**<u />**

**<u>The answer:</u>**

Step Work Justification

multiply both sides by 2

1) 2x + 6x − 4 = 12 ⇒ **{Multiplication property of equality}**

**{Combine like terms}**

2) 8x − 4 = 12 ⇒

Adding 4 both sides

3) 8x = 16 ⇒ ** {Addition property of equality}**

divide both sides by 8

4) x = 2 ⇒** {Division property of equality}**

**The answer is option B**

(B) Multiplication property of equality. 2. Combine like terms. 3. Addition property of equality. 4. Division property of equality.

1/9 - 5/6

Convert both of them into denominators of 18.

2/18 - 15/18

Subtract the numerators and keep the denominator:

-13/18

261/18 = 14.5

So as a mixed number it would be 14 and 1/2