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Lorico [155]
1 year ago
5

2. A man drove 240 miles south at the rate of 60 miles per hour. On the return trip, he drove the rate of 40 miles per hour. The

average rate per hour for the round trip was:​
Mathematics
2 answers:
zheka24 [161]1 year ago
4 0

Answer:

48 mph

Step-by-step explanation:

Distance = rate x time

Going: Rate is 60 mph      distance is 240  

The time is the \frac{Distance}{rate} or \frac{240}{60} or 4 hours.

Coming: Rate is 40 mph    distance is 240

The time is the \frac{distance}{rate} or \frac{240}{40} or 6 hours.

We can now find the average.

Average rate = \frac{total distance}{total time} = \frac{480}{10} = 48 mph

shutvik [7]1 year ago
3 0

av =  \frac{v_{2} - v_{1}}{t_{2} - t_{1}}

t_{1} =  \frac{d}{v_{1}} =  \frac{240}{60} = 4 \: hours  \\ t_{2} =  \frac{d}{v_{2}}  =  \frac{240}{40}  = 6 \: hours

av =  \frac{v_{2} - v_{1}}{t_{2} - t_{1}}  =  \frac{40 - 60}{6 - 4}   =  \frac{ - 20}{2}  =  - 10

av  \: speed= 10 \\ av \: velocity =  - 10 \:  \: north

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<u>92 feet.</u>

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prime1

/prīm/

Learn to pronounce

See definitions in:

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Fencing

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adjective

1.

of first importance; main.

"her prime concern is the well-being of the patient"

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main

chief

key

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secondary

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grade A

superior

supreme

flawless

choice

select

finest

superlative

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marvelous

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wonderful

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a state or time of greatest strength, vigor, or success in a person's life.

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best days/years

day

time

prime of one's life

maturity

youth

springtime

salad days

bloom

flowering

full flowering

perfection

peak

pinnacle

height

high point/spot

zenith

ascendancy

2.

CHRISTIAN CHURCH

a service forming part of the Divine Office, traditionally said (or chanted) at the first hour of the day (i.e., 6 a.m.), but now little used.prime1

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3 years ago
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