Answer:

Step-by-step explanation:




Answer:
when multiplying by 10 just move up by one zero
Answer:
step 2
Step-by-step explanation:
The student first made an error in the step 2.
Because if we simplify the equation A in step 1, we should distribute the right side of the equation following the rule a(b-c) = a*b +a*(-c)
So, it would be
–7y = (-7)*(16)+(-7)*(-2z)
=> -7y = -112 + 14z
The formula of a volume of a cone:

We have:

Substitute:

Answer: 1206 cm³
125 divided by 100 is 1.25, 1.25 times 15 is 18.75.She tips $18.75