8/1/25 Algebra 1

Name the correct property to make the sentence true. 1) 2 + r is equivalent to r + 2 by the

• commutative law for multiplication.

• associative law for addition.

• distributive law.

• commutative law for addition.

Solve the problem. 2) The area of a triangle with base b and height h is given by the formula A = 1/2 bh. Find the area of a triangle when the base is 19.0 cm and the height is 11.1 cm. Round your answer to the nearest hundredth.

• 210.9 cm^2

• 105.45 cm^2

• 540

• 180

• 312

• 756

• –18

• 6

• –126

• 18

Solve. 6) 2n – 3 = 17

• 22

• 11

• 10

• 18

5(7x – 1) = 20

• 19/35

• 3/7

• 5/7

• 3/5

p/3 – 3p/8 = 3

• 69

• 72

• –69

• –72

7x + 6 = 7(x + 8) + 5

• all real numbers; identity

• no solution; contradiction

• 2

• –2

Solve. The difference between two positive integers is 38. One integer is three times as great as the other. Find the integers.

• 57 and 95

• 19 and 38

• 19 and 57

• 38 and 57