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pychu [463]
3 years ago
7

18)

Mathematics
1 answer:
kondor19780726 [428]3 years ago
7 0
If the circumference of a circle is changed from 9 cm to 3 cm, then the diameter decreases by a factor of 3.
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A train leaves boston at 2:00 pm. a second train leaves the same city in the same direction at 6:00 pm. the second train travels
AURORKA [14]
\boxed {\boxed { \text {Distance = Speed x Time}}}

<u>First Train:</u>
Time taken = 9 hours (2pm to 11pm)
Let the speed be x 
Distance = Time x Speed = 9x

<u>Second Train:</u>
Time taken = 5 hours (6pm to 11pm)
Speed = x + 48
Distance = Time x Speed = 5(x + 48)

Since both the distance they traveled are the same, we equate the distance to solve for x.

<u>Solve for x:</u>
9x = 5(x + 48)
9x = 5x + 240
4x = 240
x = 60

<u>Find the speed:</u>
x = 60 mph
x + 48= 108 mph

Answer: The spend of the two trains are 60 mph and 108 mph.
3 0
3 years ago
What are three consecutive even integers whose sum is 66
irakobra [83]

Answer:

21,22,23

Step-by-step explanation: i love fried chicken look at my skin color

4 0
3 years ago
Read 2 more answers
Someone pls help what would this slope be ?
tekilochka [14]

Answer:

-3/5x

Step-by-step explanation:

It is a negative slope and use rise over run

5 0
3 years ago
A jar contains 770 beans. Of them, 350 are mung beans and the rest are kidney beans. What is the ratio of mung beans to all the
MatroZZZ [7]

Answer:

5 MB : 16 B

Step-by-step explanation:

First, find the GCF of 770 and 350. ( 70 )

Next, divide both numbers by 70

770 / 70  = 11 Kidney beans

350 / 70 = 5 Mung beans

It says ratio of mung beans to <u>all</u> beans.

11 KB + 5 MB = 16 B

5 Mung beans to 16 Beans

:)

3 0
3 years ago
A car travels 1/6 of the distance between two cities in 3/5 of an hour. At this rate, what fraction of the distance between the
Delvig [45]

<u>Answer:</u>

\frac{5}{18}

<u>Step-by-step explanation:</u>

Distance traveled by a car between two cities = 1/6 distance

Time taken to travel between the two cities = 3/5 hours

Therefore, to find how much of the distance the car can travel in 1 hour, we need to divide the given distance by the given time to get:

(\frac{1}{6}) ÷ (\frac{3}{5})

Change the later fraction to its reciprocal to solve:

\frac{1}{6} × \frac{5}{3} = \frac{5}{18}

Therefore, in one hour, the car can travel 5/18 of the distance.

8 0
3 years ago
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