Answer:
0.06
Step-by-step explanation:
Answer:
you would give back $7.87. But if you add the $40.50 instead you would give them $8.05
Step-by-step explanation:
Answer:
None of them
Step-by-step explanation:
y=-x-5 => slope=-1
A. slope =-2/3
B. slope =-3/2
C. slope = 2/3
D. slope = 2/3
None of slope of the choices is -1
Answer:
1.04166666667
Step-by-step explanation:
1. The correct statement is the first one, which is: <span>Add the two equations, solve for y, and then substitute –1 for y to find x.
</span>
2. Therefore, you have the following system of equations:
<span>
4x+8y=20
-4x+2y= -30
3. When you a</span>dd the two equations, and clear the variable "y", you obtain:
10y=-10
y=-1
4. Now, you must substitute -1 for y (y=-1) to find x, as below:
4x+8y=20
4x+8(-1)=20
4x-8=20
4x=20+8
4x=28
x=28/4
x=7
