Replace n with 9 :
7 × 9 - 3 = 60
the answer is C.60
Exponent way n
exponetional way
Answer:
there are 28 quarters and 13 nickels
Step-by-step explanation:
Answer:
b = 77
Step-by-step explanation:
a² + b² = c²
36² + b² = 85²
1296 + b² = 7225
b² = 7225 - 1296
b² = 5929

b = 77