hobbs4ever1
06.11.2020 •
Mathematics
Sam has started mowing lawns to save money for a new bike that costs $190. He charges $20 per hour for mowing lawns, and $35 per hour for gardening. However, he has to pay his dad $120 for the use of his lawnmower. Which of the following equations could be used to find the number of hours Sam has to work to buy his bike if m represents the number of hours he mows lawns, and g represents the number of hours he spends gardening? Group of answer choices
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Ответ:
Step-by-step explanation:
As per give we have
Earning = 20m + 35gSpending =$120Target amount = $190The equation to consider all is
190 = 20m + 35g - 120 ⇒ 310 = 20m + 35gSo correct option is the second one
Ответ:
C 10% Condition.
Step-by-step explanation:
Let's Look at them one by one.
A: Large Enough sample condition.
this is met because 600 students is a good number to carry out a surwey.
B: Randomization, 600 incoming freshman are definitely random.
C: we are left with C so the answer is C.