10. which of the following expressions is
equivalent to 6(5 + 3x)?
a30 + 3x
b 11 + 9x
c 30 + 18
d11 + 3x

30+18x C is correct

Step-by-step explanation: You distribute the 6 to both of the values in the parenthesis.

C 30 + 18x

Step-by-step explanation:

6(5 + 3x)

Distribute the 6 to both terms inside the parentheses

6*5 +6*3x

30 +18x

312312

step-by-step explanation:

x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x

step-by-step explanation:

last month maria hiked the 5-mile mountain trail a number of times and she hiked the 10-mile canal trail several times. let x represent the number of times she hiked the 5-mile trail, and let y represent the number of times she hiked the 10-mile trail. if she hiked a total of 90 miles, which equation can be used to find the number of times maria hiked each trail? x + y = 90 5x – 10y = 90 90 – 10y = 5x 90 + 10y = 5x