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viva [34]
2 years ago
5

A train goes twice as fast downhill as it can go uphill, and 2/3 feet as fast uphill as it can go on level ground. If it goes 12

0 miles per hour downhill, how long will it take to travel 45 miles per flat
Mathematics
2 answers:
lisabon 2012 [21]2 years ago
8 0

Answer:120/2=60 speed uphill. Speed level 3/2 uphill=90 speed downhill 120 on flat land d=45=90*t t=1/2 hrs

Step-by-step explanation:

Sergeu [11.5K]2 years ago
6 0

Answer:

Step-by-step explanation:

ion know?

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Y=5x-4
anyanavicka [17]

Answer:

\displaystyle -5x + y = -92\:or\:y = 5x - 92

Step-by-step explanation:

−12 = 5[16] + b

80

\displaystyle -92 = b \\ \\ y = 5x - 92

If you want it in <em>Standard</em><em> </em><em>Form</em>:

y = 5x - 92

- 5x - 5x

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\displaystyle -5x + y = -92

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7 0
3 years ago
The point StartRoot x EndRoot is plotted on the number line. A number line going from 9.8 to 10.7. StartRoot x EndRoot is plotte
FromTheMoon [43]

Answer:

it's not 100 or 102, just took the test and got them both wrong.

Step-by-step explanation:

.

7 0
3 years ago
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A rectangle has a perimeter of 26 units. The length of the rectangle is 2X+3 and the width is 3X. What is the width of the recta
densk [106]

Answer:

X = 2

Step-by-step explanation:

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I used the trial and error technique

Guessed it was 2 working out to see if i was right or wrong:

Length: 2(2) + 3 = 4+3 = 7

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3 0
3 years ago
Please look at number 10. from the slope and write the equation for me
kompoz [17]

Answer:

y = 8x + 38

Step-by-step explanation:

To find the slope we set up y = mx + b and plug m (our slope) in and then plug in the point into x and y to find b (our y-intercept)

   y = mx + b

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   6 = 8(-4) + b

   6 = -32 + b

+32   +32

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So using our slope and our intercept we have our slope intercept

y = mx + b

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Hope this helps :)

7 0
3 years ago
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Find limit as x approaches -3- of x/(sqrt(x^2-9)
gregori [183]
lim_{x \rightarrow -3} \frac{x}{x^2-9} =lim_{x \rightarrow -3} \frac{1}{2x} = \frac{1}{2(-3)} =- \frac{1}{6}
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3 years ago
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