Answer:
<em>120 minutes or 2 hours</em>
Step-by-step explanation:
<u>Proportions</u>
The method to solve the problem is to compute how many cans produce each machine per minute, then add them to obtain the total cans produced by both. Finally, we compute the time to produce 4200 cans at that level of production.
The newer machine produces 4200 cans in 210 minutes, it means it produces
=20 cans per minute
The older machine needs 280 minutes to produce the same 4200 cans, to it produces
= 15 cans per minute
Together, they produce 20+15=35 cans per minute. Thus, to produce 4200 cans, they need
= 120 minutes or 2 hours
C=pi x D
9.04= pi D
D=9.04/pi
or= 2.87
I need more to answer this question
Place the decimal point right after the first nonzero digit, which is 3.
So you'll go from this
to this
after this move.
Now ask yourself: "how many spots must I move the decimal point to get back to 0.003045?"
The answer is "3 spots to the left"
The exponent of the final answer is -3
The negative indicates "move left" and the 3 tells us how many places to move the decimal
Therefore,
Answer: Choice C)This is assuming you meant to write the -3 as an exponent
12 hours because if it’s one over 12 you need 12 hours to make the whole lawn