Answer:
Step-by-step explanation:
The area of a rectangle is equal to 
, where 
is the length of the rectangle and 
is the width of the rectangle. In a rectangle, opposite sides are equal.
Therefore, we can write the following system of equations:
Expand the first equation:
Substitute the second equation into the first (
):
Solving for 
:
Answer:
905 - 825 = 80
that means 80 min is between those times,
80 min = 1 hr and 20 min
*WARNING THIS WILL NOT WORK FOR SOME QUESTIONS, I AM DOING A SHORTCUT WAY!!*
Answer: <u><em>1 hr and 20 min has passed from 8:25 to 9:05. </em></u>
We could find the error first, but if we solve the equation, we can compare our answers to find the error. So,
7x + 12 + 3x = 8
10x + 12 = 8
10x = -4
x = -4/10
x = -2/5.
When we compare the two, we see that our second line is vastly different, and we can easily isolate the mistake, finding that it occurs when they disregard the variable in the 3x term and subtract 8 by 3 rather than combining the terms 3x and 7x together.
Answer:
120 · b = 312 or 120b = 312
Step-by-step explanation:
Answer:
8x + 8 = 6x + 20/3
Step-by-step explanation:
