Answer:

12. A. 12

13. A. Additive Identity Property

14. C. a(b+c)=a+(b+c)

15. C. 0.153

Step-by-step explanation:

12. A. 12

• (-14)+(-9)=-23
• -23+35=12

13. A. Additive Identity Property

• The additive identity property states the following number of if we add any number (a) to zero, the sum of (a) and 0 is equal to (a).

14. C. a(b+c)=a+(b+c)

• The distributive property tells us how to solve expressions in the form of a(b + c).
• You must distribute/multiply all terms from (b+c) to (a).
• for instance 6(x+3)=6(x)+6(3)=6x+18.

15. C. 0.153

• How can we convert common fraction to decimal?
• Write the denominator outside the division bracket and the numerator inside of it.

13⟌2

• Place a zero with a decimal point after it above the division bracket.

0.

13⟌2.0

• Use long division to get your answer.

0.153

13⟌2.0

- 1 3

= 7 0

- 6 5

= 5 0

- 3 9

= 1 1

• And we have to round of to the near hundredths.
• How to round off to the nearest hundredths?
• Step 1: Locate and underline the hundredths place (5) and look to the right (3):
• Step 2: The digit to the right (3) is 4 or below. So, we let it go to get 0.15 as answer.
• In short: 0.153 rounded to the nearest hundredths is 0.15.