20+12x
20+12(40)
20+480
500
total compensation for this week = $500
Answer:
He has a total of 32 cones
Step-by-step explanation:
5/6 and 1/6 are exponents to X. The X’s are divided by each other. does that make sense?
Answer:
-8b+36 is the answer.
Step-by-step explanation:
=8(-b+4)
Opening brackets to simplify
=8✖️(-b)+8✖️4
=-8b+36 is the answer.
Hope this will help you :)
Let x be a number of skateboards and y be the number of bicycles in Eddie's repair shop.
Eddie asks the girls to order 54 new wheels for 21 skateboards and bicycles, then
x+y=21.
One scateboard has 4 wheels, then x scateboards have 4x wheels, one bicycle has 2 wheels, then y bicycles have 2y wheels. In total there should be ordered 54 wheels, so
4x+2y=54.
Solve the system of equations:
![\left\{\begin{array}{l}x+y=21\\4x+2y=54.\end{array}\right.](https://tex.z-dn.net/?f=%5Cleft%5C%7B%5Cbegin%7Barray%7D%7Bl%7Dx%2By%3D21%5C%5C4x%2B2y%3D54.%5Cend%7Barray%7D%5Cright.)
From the first equation
Substitute it into the second equation:
![4(21-y)+2y=54,\\ \\84-4y+2y=54,\\ \\-2y=54-84,\\ \\-2y=-30,\\ \\2y=30,\\ \\y=15.](https://tex.z-dn.net/?f=4%2821-y%29%2B2y%3D54%2C%5C%5C%20%5C%5C84-4y%2B2y%3D54%2C%5C%5C%20%5C%5C-2y%3D54-84%2C%5C%5C%20%5C%5C-2y%3D-30%2C%5C%5C%20%5C%5C2y%3D30%2C%5C%5C%20%5C%5Cy%3D15.)
Then
![x=21-15=6.](https://tex.z-dn.net/?f=x%3D21-15%3D6.)
Answer: 6 scateboards and 15 bicycles.