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3 years ago

13

Two trains are moving towards each other. One train moves at a speed of 50 mph, and the other train travels at 60 mph. How soon

will they meet, if originally the distance between them was 340 miles?

2 answers:

san4es73 [151]3 years ago

6 0

I believe that the trains will meet at three hours and ten minutes but not quite sure

Margaret [11]3 years ago

4 0

I think that they will meet in 3 hours and 11 min but I’m not too sure

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A person wishes to mix coffee worth nine dollars per pound with coffee worth three dollars per pound to get 240 pounds of a mixt

Anastasy [175]

$\bf \begin{array}{lccclll}
&amount&price&priced\ amount\\
&-----&-----&--------\\
\textit{9 bucks/lb}&x&9&9x\\
\textit{3 bucks/lb}&y&3&3y\\
-----&-----&-----&-------\\
mixture&240&5&1200
\end{array}
\\\\\\
\begin{cases}
x+y=240\implies \boxed{y}=240-x\\
9x+3y=1200\\
----------\\
9x+3\left( \boxed{240-x} \right)=1200
\end{cases}$

solve for "x".

what about "y"? well, y = 240 - x

4 0

3 years ago

What is the length of YZ?

Bogdan [553]

Answer: C

Hello,

Step-by-step explanation:

WZ=7-3=4

YW²=XW*WZ=3*4=12 ==> WY=2√3

In the right triangle YWZ, using the Pythagorean's theorem:

YZ²=WY²+WZ²=12+4²=28

YZ=2√7≅5.29150....

Answer C

3 0

3 years ago

Draw the figure with the vertices D(1, 1), E(1,−2), F(−2,−2), G(−2, 1) in the coordinate plane. Question 2 Find the perimeter an

Olegator [25]

Answer:

the answer is 6

Step-by-step explanation:

6 0

3 years ago

Fifty three less than twuce a number is 31 what is the number

BartSMP [9]

Answer:

42

Step-by-step explanation:

So if the result of it is 31,

And it is 53 less you would add back 53

53 + 31 = 84

And it is twice a number so you divide by 2 (opposite of twice a number)

84/2 = 42

5 0

3 years ago

Anna walks her dog at a constant rate of 12 blocks in 8 minutes.

mart [117]

Answer:

she will reach 12 blocks in 8 minutes

Step-by-step explanation:

next time actually ask a question dont just state a fact. XD

8 0

3 years ago