79 is 4 below 83 so her next grade needs to be 4 above in order to get an average of 83. The answer is 87.
Answer:
Step-by-step explanation:
ax - b = 3x + 5d
For x;
ax = 3x + 5d +b
x = (3x + 5d + b)/a
Now for d;
ax - b -3x = 5d
d= (ax - b - 3x)/5
Answer:
Consistent and independent
Step-by-step explanation:
The only touch at one point and they are not the same line and are not parallel