1) 37.5%
2) 41/50
3) 0.8333333333...
4) 4%
5) 1/5
6) 1.52
7) 1/4, 32%, 0.4
8) 0.015, 15%, 1/5
9) 1.62, 15/20, 16.2%
10) 17/20, 0.8, 75%
11) 1.9%, 1/8, 0.14
12) 66%, 2/3, 0.67
Answer:
y = 2x² + 16x + 11
Step-by-step explanation:
first foil (x + 4)² to get x² + 8x + 16
distribute 2 to get 2x² + 16x + 32
subtract 21 from 32
99 years old due to multiplying 9 x 11
The vertical distance between two things is
(the height of the top one) <u>minus</u> (the height of the bottom one) .
Y = 5x + 5
y - x = 5
You can use substitution to solve this system. Use y's expression (5x + 5) for y in the second equation to solve for x:
y - x = 5
5x + 5 + x = 5
6x + 5 = 5
6x = 0
x = 0
Substitute your value for x into one of the original equations to y:
y = 5x + 5
y = 5(0) + 5
y = 5
Finally, substitute both values into both original equations to check your work:
5 = 5(0) + 5 --> 5 = 5 <--True
5 - 0 = 5 --> 5 = 5 <--True
Answer:
x = 0
y = 5
