Answer:
x = - 1
Step-by-step explanation:
Isolate the variable by dividing each side by factors that don't contain the variable.
PLEASE MARK BRAINLIEST!!
Do you mean checking your work? In that case it would be 9*20.
Well, how long will it take you to drive 135 miles at 55mph?
at 55 mph, you're doing 55 miles every hour, so we can simply get the quotient of 135/55 and that's how many hours it'll take you to drive 135 miles at that speed.

so, it takes you that long, however, from 3:15 to 5:00pm there are only 45mins + 60mins or 1hr and 45 minutes, namely 1¾ hr.
so 2hrs and 27 minutes is much later than 1¾ hr, so, no dice, you can't arrive at 5pm, actually you'll arrive around 5:42pm.
Y =0.5x +2 The y-intercept is found by the coordinates (0,2) and the change is 0.5
<u>Answer</u>:
21 is 30% of 70
<u>Explanation</u>:
We know that 100% is the original number.
Equation:
(21/30)*100
21/3 * 10
7 * 10
70 ....this is the answer, original number.