Let the speed for the first 12 mi be x mi/h, the speed for 18 mi was (x+4) mi/h
thus given that
time=distance/speed
the average time will be:
3=(12+18)/(x+x+4)
3=30/(2x+4)
solving for x we get
3(2x+4)=30
6x+6=30
6x=24
x=4 mi/hr
Answer: 12 mi/hr
Answer:
Step-by-step explanation:
Each 90° clockwise turn takes a point (x,y) and transforms it to (y,-x). For a 180° turn you would do this process twice in a row; for a 270° turn, three times in a row.
Answer : B .... I hope it’s right :))
Solve for x. Show each step of the solution.
4(8 – x) + 36 = 102 – 2(3x + 24)
Solve the inequality for x. Show each step of the solution.
12x >9(2x- 3) - 15
Answer:
6,0 4,8
Step-by-step explanation:
because i know