Ask question

Ask question

All categories

3 years ago

15

the sum of the speeds of two trains is 721.6 miles per hour. if the speed of the first train is 8.4 mph faster than that of the

second train find the speeds of each

1 answer:

olya-2409 [2.1K]3 years ago

4 0

Subtract the faster speed:

721.6 - 8.4 = 713.2

Divide by 2 trains:

713.2/2 = 356.6

The slower train is going 356.6 miles per hour.

The faster train is going 356.6 + 8.4 = 365 miles per hour.

You might be interested in

A flower bed has the shape of a rectangle

saw5 [17]

Lw = 24(9) = 216 ft<span>2 that what u looking for

</span>

7 0

3 years ago

A triangle has a side length of 4 inches and an area of 18 square inches and a larger similar triangle has a corresponding side

cricket20 [7]

For this problem, we can use ratio since these triangle are said to be similar triangles. We calculate as follows:

L1/A1 = L2/A2
4/18 = 8/A2
2/9 = 8/A2
A2 = 36 square inches

The area of the larger triangle would be 36 square inches. Hope this answers the question. Have a nice day.

6 0

2 years ago

A collector has 120 movie posters and 100 band posters. She wants

Juliette [100K]

Answer:

She should sell 20 band posters from total 80 to keep the maintain the same ratio.

Step-by-step explanation:

The total number of movie posters collector has = 120

The total number of band posters collector has = 80

The current ratio of movie poster : band poster = 120 : 100

or, reducing the ratio further, we get

ratio of movie poster : band poster = 6 : 5 ...... (1)

Now, the number of posters she wants to sell = 24

So, the remaining movie poster left = 120 - 24 = 96

Let us assume she sells m band posters to keep the ratio equal.

So, the number of band posters she is left with = 100 - m

⇒The ratio of movie poster left : band poster left = 96 : 100 - m .. (2)

Now here as the ratio remains same after selling m band posters, so

$\frac{6}{5} = \frac{96}{100 - m} \\\implies 100 - m = 96 \times\frac{5}{6} = 80\\or, 100 - 80 = m\\\implies m= 20$

or, m = 20

Hence, she should sell 20 band posters from total 80 to keep the maintain the same ratio.

7 0

3 years ago

If Alice would to leave her house around 6:30am and get back about 7:15am, but its a 21 mintue walk to and back. Will she make i

Naddik [55]

Before 7:15 is the answer.

6:30 + 21 minutes + 21 minutes puts the time back at 7:12.

5 0

3 years ago

Read 2 more answers

Mrs.Anderson bought party favors for the 24 students in her class. Each favor cost $2.27. How much did all the party favors cost

laiz [17]

$54.48 because 24 x 2.27 = 54.48

7 0

3 years ago