Answer:
Step 2 because Richard multiply the powers of same base in denominator instead adding powers of same base.
Step-by-step explanation:
We are given that Richard simplified an expression in threes steps
We have to find the incorrect step in simplification of Richard
Step 1: all the exponent are multiplied by 3

Step 2:The exponents in the denominator are multiplied

Step 3:The exponents of the same base are subtracted during division


Richard makes mistake in step 2 when we multiply then power of same base should be added but Richard multiply the powers of same base in denominator.
Answer: P = 2(35) + 2(20) = 110 cm
Step-by-step explanation:
2 sides at 35 cm plus 2 sides at 20 cm
P = 2(35) + 2(20) = 110 cm
C.mr Lee spent 7 hours giving drums lessons yesterday. iF each lesson lasted 1/4 hour, how many lessons did he give
Answer:
d
Step-by-step explanation:
add the dashes up =10