21 because you turn the 5 yards in to feet which is 15, then you add 15+4+2=21
20% of camp spending money = 15
0.20x = 15
x = 15 / 0.20
x = 75 <==
Answer:
x = -6, y = -2
Step-by-step explanation:
2x-7y = 2
3x + y = -20
We need to cancel out either x or y to solve the equation. I'll cancel out x first
3(2x-7y = 2)
-2(3x+y=-20)
___________
6x-21y = 6
-6x -2y = 40
____________
-23y = 46
y = -2
Plug the value for y in one of the 2 equations to solve for x
2x -7(-2) = 2
2x+14=2
2x = -12
x=-6
I'll assume you're supposed to compute the line integral of
over the given path
. By the fundamental theorem of calculus,

so evaluating the integral is as simple as evaluting
at the endpoints of
. But first we need to determine
given its gradient.
We have

Differentiating with respect to
gives

and we end up with

for some constant
. Then the value of the line integral is
.