Answer:
1616 g
Step-by-step explanation:
V = πr²h
V = 3.14159 × (3.5 cm)² × 14 cm
V = 538.78 cm³
mass = density × volume
mass = 3 g / cm³ × 538.78 cm³
mass = 1616 g
Hello there today we will solve your problem, we will need to factorize btw...
First we will factor , which gives us
factorize giving us
cancel the common factor
and we get
Answer:
6 cars per hour
Step-by-step explanation:
The rate can be expressed several ways. One of them is "cars per hour". To find that rate, divide cars by hours:
(24 cars)/(4 hours) = 6 cars/hour
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If 6 cars were washed in 60 minutes, another way to express the rate is ...
(60 minutes)/(6 cars) = 10 minutes/car
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When you ask "what is the rate?", you need to be specific as to the rate you're interested in. Different expressions of the rate are useful for different purposes.
Before the work was done, the cost was ...
($4/gal)*(8 gal)/(340 mi) = $32.00/(340 mi)
After the work was done, the cost was ...
($4/gal)*(7 gal)/(350 mi) = $28.00/(350 mi)
The savings is the difference of these costs:
(32.00/340 -28.00/350) $/mi ≈ $0.01/mi
After the mechanic worked on the car, it cost about $0.01 per mile less to run.