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Oksanka [162]
2 years ago
7

What term must be precisely defined before writing a sufficient definition of angle?

Mathematics
1 answer:
madreJ [45]2 years ago
8 0

The answer is C.

Step-by-step explanation:

It's C) Ray

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A car travels 500 miles at an average speed of 60 MPH on the return trip the same route that it travels 50 miles per hour how lo
xxMikexx [17]

Step-by-step explanation:

it is not clear - is 500 miles the whole round trip, or is it only the trip in one direction ?

and do we need the time for the whole round trip, or only for the return trip ?

in any case, always remember,

speed = distance/time

therefore, to get time, we need to divide distance by speed :

distance / distance/time = time×distance/distance = time

so, let's calculate all these different scenarios :

1. 500 miles is only one direction, and we measure only the time going back with 60 mph :

500 / 60 = 50/6 = 25/3 = 8 1/3 = 8 hours 20 minutes.

as 1/3 of 1 hour = 1/3 of 60 minutes = 60/3 = 20 minutes.

2. 500 miles is only one direction (going 1000 miles altogether), and we measure the time going to with 50 mph and going back with 60 mph :

500 / 50 = 10 hours

500 / 60 = 8 hours 20 minutes

the whole round trip takes 18 hours 20 minutes.

3. 500 miles is the whole round trip. so, 250 miles is one direction. and we measure only the time going back with 60 mph :

250 / 60 = 25/6 = 4 1/6 = 4 hours 10 minutes.

as 1/6 of 1 hour = 1/6 of 60 minutes = 60/6 = 10 minutes.

4. 500 miles is the whole round trip. so, 250 miles is one direction. and we measure the time going to with 50 mph and back with 60 mph :

250 / 50 = 5 hours

250 / 60 = 4 hours 10 minutes

the whole round trip takes 9 hours 10 minutes.

did you notice ?

when going only half the distance, also the time it takes to travel that distance is only half (or vice versa - double). because the ratio distance/time is always the same.

7 0
2 years ago
Verify that triangle ABC is equal to DEF . Find the scale factor of triangle ABC to triangle DEF
alexira [117]

Answer:

k =  6 : 5 : 4

Step-by-step explanation:

BC : AB : AC = 18 : 15 : 12 = 6 : 5 : 4

EF : DE : DF = 12 : 10 : 8 = 6 : 5 : 4

5 0
2 years ago
A large number is 5 more than twice a smaller number. their sum is 80. find the numbers
frez [133]
The answer is 55 and 25      (25)x2=50, 50+5=(55), 55+25=80.



3 0
3 years ago
Which is NOT TRUE of data sets? A) A measurable characteristic of a sample is called a statistic. B) A measurable characteristic
zheka24 [161]
A) is wrong because a measurable characteristics is called a basic

3 0
3 years ago
A model spaceship costs $15.99 before tax. The tax on the model spaceship is 8%.
Vlad1618 [11]
15.99×8/100=1.28$ this is the tax
to get the total cost 15.99+1.28= 17.27$
7 0
3 years ago
Read 2 more answers
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