1. 3x^1 + 8 - (2x^2 + 1).....distribute the negative thru the parenthesis
3x^1 + 8 - 2x^2 - 1....now combine like terms
-2x^2 + 3x^1 + 7
2. 5x^2 + 3x - 4 - (x^2 - 6x)...same thing..distribute
5x^2 + 3x - 4 - x^2 + 6x...combine like terms
4x^2 + 9x - 4
Answer:
158.333333
Step-by-step explanation:
do the percent correct divided by the number of questions then multiply it by 100
95/60=1.58333333
1.58333333*100=158.333333
1/3x + 3/5 * 2/3x = x - 36
1/3x + 6/15x = x - 36
11/15x = x - 36
4/15x = 36
x = 135
sweater costs 1/3x = 45
hope that helps, God bless!
Answer:
20.31 units to the nearest hundredth.
Step-by-step explanation:
We need to use the distance formula between the points and find their sum.
D1 = √((2-2^2 + (1+3)^2) = √16 = 4
D2 = √(-1-2)^2 + (3-1)^2) = √13
D3 = √(-3+1)^2 + (0-3)^2) = √13
D4 = √(-3+3)^2 + (-4)^2) = √16 = 4.
D5 = √(-3-2)^2 + (-4+3)^2) = √26.
Perimeter = D1+D2+D3+D4+D5
= 4+√13+√13 + 4 +√26
= 20.31 units.