Answer:
x=2
y=10.5
z=2.3
w=1.75
Step-by-step explanation:
both sides of each scale have the same weight attached to them so you just have to solve the following equasitions for each scale: 3x+1=7 2y+10=31 2z+2.2=6.7 4w+3/2=17/2
Answer: 17
2^2 is 4
45/9 is 5
Multiply 4•5 to get 20
Subtract 3
One ate 1/3, Another ate = 1/4.
Total ate = 1/3 + 1/4 = (4 + 3) / 12 = 7/12
Fraction the third girl got = (The whole =1) minus 7/12
= 1 - 7/12 = (12 - 7) / 12 = 5/12
The third girl ate 5/12 of the pizza.
The factors of 20 are 1,2,3,5,6,10,15, and 30
6+3=9.
If x is the number, then the answer is 4x^2 + 5x
