Answer:
Step-by-step explanation:
4x+y=14
x-2y=8
then;
x=8-2y
substitute;
4(8-2y)+8-2y=14
32-8y+8-2y=14
40-10y=14
26=10y
y=2.6 , work out 4x+2.6=14 to get x
Expand (x+2)^2: x^2 + 4x + 4 : remember that (a+b)^2 = a^2 + 2ab + b^2
So: x^2 + 4x + 4 - x^2 = 60
Answer: 4 ways
Step-by-step explanation:
Given : A team consisting of Persephone, Neptune, Ares, and Roger need to select one person to be team captain.
The number of people in the team = 4
The number of ways to select the team captain from 4 members is given by :-

Hence, there are 4 ways to select team captain.
Answer:
10
Step-by-step explanation:
1518 divided by 26 is 58 remainder 10.
... 1518 = 26×58 + 10 = 1508 + 10
Mr. Stephens will make 58 trips with a full load. After that, 10 tons of rock will remain.