6(2x + 5y)
6[2(3) + 5(4)]
6[6 + 20]
6(26)
156
The answer is 156
Hope this helps :)
Answer:
<em>Mechanic A worked for 5 hours</em> and <em>Mechanic B worked for 15 hours</em>
I hope my answer and explanation helped!
<u>okay to get started you need to make a system of equations:</u>
x= number of hours worked by mechanic A
y= number of hours worked by mechanic B
x + y= 20
95x + 60y= 1375
<u>substitute in an equation:</u>
x + y= 20
y= 20- x
95x + 60(20-x)=1375
<u>Solve for x</u>
95x + 1200 - 60x=1375
35x =175
x= 5
<u>plug in x to solve for y</u>
x + y= 20
5 + y= 20
y=15
<u>Check work</u>
then you're done :D
We can use the formula length x width x height. Substitute in the numbers for words and you get:
14 x 14 x 19...
...which equals 3724cm^3.
Hope I helped! Sorry if I'm wrong.
~Mschmindy
