Answer:
3 x^2 - x + -1
Step-by-step explanation:
Simplify the following:
-(4 x - 2 x^2 - 3) + x^2 + 3 x - 4
Factor -1 out of -2 x^2 + 4 x - 3:
--(2 x^2 - 4 x + 3) + x^2 + 3 x - 4
(-1)^2 = 1:
2 x^2 - 4 x + 3 + x^2 + 3 x - 4
Grouping like terms, 2 x^2 + x^2 + 3 x - 4 x - 4 + 3 = (x^2 + 2 x^2) + (3 x - 4 x) + (-4 + 3):
(x^2 + 2 x^2) + (3 x - 4 x) + (-4 + 3)
x^2 + 2 x^2 = 3 x^2:
3 x^2 + (3 x - 4 x) + (-4 + 3)
3 x - 4 x = -x:
3 x^2 + -x + (-4 + 3)
3 - 4 = -1:
Answer: 3 x^2 - x + -1
125°
Supplementary says that the combination of the angles is equal to 180°.
180-55
Answer:
36 and 49
Step-by-step explanation:
6x6 and 7x7
Answer:
80 ropes in 2 hours
Step-by-step explanation:
If she makes 10 ropes in 1/4 of an hour, she will make 40 ropes in one whole hour because an hour divided by four would mean that you need to times 10 by four. For the second hour you add another 40 because 40 is the value for one hour and you need to know how many ropes in two hours. :) really hope this helps
