49 only has one square root, which is 7. There is no other number that you can multiply by itself to get 49
Answer:
x=136
Step-by-step explanation:
The sum of the angles inside a quadrilateral add to 360, so
79+55+110+x=360
Combine like terms
224+x=360
Subtract 224 from both sides
x=136
Answer:
C. 15
Step-by-step explanation:
1. First, let's solve the system of equations;
Solve -m - n = 5 for m.
Substitute -n - 5 for m in m - n = -3.
Substitute -1 for n in m = -n - 5.
2. Okay, now that we know m = -4 and n = -1, let's solve for m^2 -n^2.
Therefore, the answer is C. 15!