All categories

3 years ago

Look at the photo.(15 pts )

Mathematics

2 answers:

horrorfan [7]3 years ago

8 0

I thought i know but i don’t sorry

e-lub [12.9K]3 years ago

5 0

1/4,0.6,0.9,-1.4,-8/5

You might be interested in

Two trains started moving at the same time, train A from Boston to New York, and train B from New York to Boston. The distance b

Ede4ka [16]

Answer:

After 1.7 hours

Explanation:

1. Calculate the average speed of train B

60mph = 3/4 (s) ⇒ s = 60 (4/3) mph = 80 mph

2. Build a table

When the two trains meet:

Train Average speed Distance time (distance/average speed)

mph

A 60 x x/60

B 80 240 - x (240 - x) / 80

3. Write the equation

The time, when the two trains meet, is the same for both trains:

$\dfrac{x}{60}=\dfrac{240-x}{80}\\ \\ \\ 80x=14,400-60x\\ \\ 80x+60x=14,400\\ \\ 140x=14,400\\ \\ x=14,400/140\\ \\ x=102.85miles$

4. Calculate the time:

x/60 = 102.86 / 60 = 1.7 hours

The two trains will meet after 1.7 hours

7 0

2 years ago

Please help me!! (Look at the photo)

maw [93]

Answer:

310in

Step-by-step explanation:

7×10=70

70×2=140(there are two that are the same length)

5×10=50

50×2=100(there are two that are the same length)

5×7=35

35×2=70(there are two that are the same length)

70+100=170

170+140=310

please let me know if it's correct

4 0

2 years ago

Free 100 points if u know what dis is

kvasek [131]

Answer:

This is a picture of You

Step-by-step explanation:

7 0

2 years ago

Read 2 more answers

Defina qué es el producto de un vector por un escalar

Ostrovityanka [42]

Answer: c

Step-by-step explanation:

5 0

2 years ago

Which is a true statement?

Murrr4er [49]

A) -2.8 > -3.5 is true. There are infinite solutions.
B) -7.75 < -8.45 is false. There is no solution.
C) 6.52 < 6.5 is is false. There is no solution.
D) -11.1 > 10.7 is false. There is no solution.

3 0

2 years ago