115*20=2300.
50*5=250
First mechanic 20 hours
Second mechanic 5 hours
Hey!
To find the percentage increase, you must use this formula:
{(50 - 92 / 50] × 100 = 84%
So, the percent increase from 50 to 92 is: 84%.
Step-by-step explanation:
(-6x +3y=9 )×4
( 10x+4y)×3
-24x +12y =36
30x+12y= -18
-24x+12y- (30x+12y)= 36-(-18)
-54x = 54
x= -1
by using 10x +4y = -6
apply x= -1
-10+4y= -6
4y= -6 +10
4y=4
y=1
so the answer is x=-1 and y= 1
Well I would say the answer to your question is
A why?
well because -4 times -2 equals Positive 8 BUT if you times 8 by negative 1 it turns it back into a negative number!
Hope this helps
