65+55=120
120÷2=60
So, it take them 60mins if they worked together.
A)
x^2 - 6x + c = - 5 + c
using a^2 - 2ab + b^2 = (a-b)^2
so
6x = 2 * x * 3
so
c = 9
Answer
c = 9
b)
substitute c = 9
x^2 - 6x + 9 = - 5 + 9
(x - 3)^2 = 4
Answer:
(x - 3)^2 = 4
c) solve for x
(x - 3)^2 = 4
(x - 3)^2 = 2^2
so
x - 3 = 2
x = 5
and
x - 3 = -2
x = 1
Answer: x = 1 , 3
Answer:
-47
Step-by-step explanation: Remember p.e.m.d.a.s
so start with (-7*7) = -49
then add so 11 + -49 = -38
then subtract so -38 - 9 = -47
B
All equations with just X are linear All x^2 are quadratic
Answer:
480036
Step-by-step explanation:
960072/2=480036
