Answer: the answer would be B :)
Since PQ=PR
=> Q is the midpoint of PR
Hope this helps you
Answer:
Like terms
Same number of equations as unkowns
Step-by-step explanation:
To add linear equations you need the amount of equations to match the number of unknowns.
The equations must have like terms.
All like terms will be added to each other and might even cancel out and solve one term if equal terms have opposite signs.
There are two sides 9 x 5
Two sides are 5 x 3
Two sides are 9 x 3
Surface area :
2 x 9 x 5 = 90
2 x 5 x 3 = 30
2 x 9 x 3 = 54
Total: 90 + 30 + 54 = 174 square inches