Ill give brainliest for help with algebra. random answers will be reported. 1. bette drives at 60 miles per hour for 2 1/2 hours and at 75 miles for 1 1/2 hours. what is her average rate of speed?
2. kim has $4.75 in nickles and dimes. if she has twice as many dimes as nickels, how many of each coin does she have?

Rate = 75 mph; time = 3/2 hrs; distance = rt = 112.5 miles

Average rate = distance/time

average = (150+112.5)/(5/2 + 3/2) = 262.5/4 = 65.625 mph

Step-by-step explanation:

x=30

step-by-step explanation:

step-by-step explanation:

we are given

since, we have to isolate x on anyone side

so, we can move all x terms on one side

subtract both sides by 2x

add both sides by 9

divide both sides by 4

we get