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Reptile [31]
4 years ago
6

A train traveling south leaves the station at a constant rate of 62 kilometers per hour. A second train traveling north leaves t

he station at the same time traveling at a constant rate of 68 kilometers per hour. How many hours after the trains leave will they be 455 kilometers apart?
A 3.5


B.
4.5


C.
5.5


D.
6.5
Mathematics
2 answers:
malfutka [58]4 years ago
7 0

Answer: 3.5 hours

Step-by-step explanation:

68 + 62 = 130

455 / 130 = 3.5

Hope this helps you! :)

oksano4ka [1.4K]4 years ago
5 0

Answer:

3.5

Step-by-step explanation:

I got it right on the test

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Solve the following proportion.<br> х<br> 42<br> 35<br> 10
anzhelika [568]

Answer:

12

Step-by-step explanation:

The proportion is equal to \frac{x}{10}=\frac{42}{35}

We can simplify the right side by dividing by 7/7 to get the right side equal to 6/5. Now we can cross-multiply to get

60=5x

Dividing both sides by 5, we have the answer as

x=12

6 0
3 years ago
The smaller of two similar rectangles has dimensions 4 and 6. Find the dimensions of the larger rectangle if the ratio of the pe
BlackZzzverrR [31]

Answer:6 by 9

I was stuck on thus question too for a while but then I went back and figured everything.


4 0
3 years ago
Read 2 more answers
Solve the system of equations.
Alenkasestr [34]

Step-by-step explanation:

<u>Step 1:  Substitute x from the second equation into the second one</u>

2x - 9y = 14

2(-6y + 7) - 9y = 14

(2 * -6y) + (2 * 7) - 9y = 14

-12y + 14 - 9y = 14

-21y +14 - 14 = 14 - 14

-21y/-21 = 0 / -21

y = 0

<u>Step 2:  Substitute y into the second equation</u>

x = -6y + 7

x = -6(0) + 7

x = 0 + 7

x = 7

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4 0
4 years ago
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ULT ma<br> 4. Write an expression, then evaluate.<br> a. 1/4of the sum of 18 and 6
OlgaM077 [116]

Answer: Required expression: \dfrac14\times(18+16)

Result: \dfrac{17}{2}

Step-by-step explanation:

Given phrase:  " \dfrac14\text{ of the sum of } 18\text{ and }6. "

Required expression: \dfrac14\times(18+16)    ['+' used to express sum, 'x' used in place of 'of']

Since 18+16 = 34

Then,

\dfrac14\times(18+16)=\dfrac14\times34  \\\\=\dfrac{1}{2}\times17\ \ \text{[Divide numerator and denominator by 2]}\\\\=\dfrac{17}{2}

Hence,     \dfrac14\times(18+16)=\dfrac{17}{2}.  

8 0
3 years ago
PLEASE HELP
faust18 [17]

Answer: B) The function is decreasing

Step-by-step explanation:

As x increases, y decreases.

3 0
2 years ago
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