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Paraphin [41]
3 years ago
7

If a train travels 80 m/s in two hours and 20 minutes, how far has it traveled?

Mathematics
1 answer:
Alexxx [7]3 years ago
8 0

Answer:

distance = 585600 m

Step-by-step explanation:

change 2 hours 20 minutes to seconds

2  hrs * 60 minutes/1hr * 60 sec/min = 7200 sec

20 minutes * 60 sec/min = 120 sec

2 hr 20 min = 7320 seconds

distance = rate * time

distance = 80 m/s * 7320 s = 585600 m

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Write addition sentences (expression) where the sum is zero. <br><br> can someone make a expression
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<u>(-2)+2=0, (-0.5)+0.5=0, and (-5)+5=0</u>

All those equations answers are 0, please mark me brainiest, and hope I helped!

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First answer gets a thanks
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I would have to say A - Mean; because the data is skewed and there are outliers.

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What is the equvilent fraction of 7•4 OVER 1002•9
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Find x so that (x,-14) is a solution to 2x+3y=12
Monica [59]

Answer:

27

Question:

Find x so that (x,-14) is a solution to 2x+3y=12 .

Step-by-step explanation:

So we are asked to replace y with -14 and solve for x in the equation:

2x+3y=12.

2x+3y=12 with y=-14:

2x+3(-14)=12

2x-42=12

Add 42 on both sides:

2x=54

Divide both sides by 2:

x=27.

So the x-coordinate that corresponding to y=-14 is 27.

Verify that:

(27,-14) is a point satisfying 2x+3y=12.

Replace x with 27 and y with -14:

2(27)+3(-14)=12

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12=12 is true so our work must be right.

3 0
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Your are designing a rectangular birthday card for a friend. You want the card's length to be 1 inch more than twice the card's
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The width of the card to the nearest tenth of an inch is 6.15 inches

<h3>Area of rectangle</h3>

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  • Length = 2x + 1
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Area of a rectangle = Length × Width

88 = (2x + 2) × x

88 = 2x² + 2x

2x² + 2x - 88 = 0

x = -b ± √b² - 4ac / 2a

= -2 ± √2² - 4(2)(-88) / 2(2)

= -2 ± √4 - (-704) / 4

= -2 ± √708 / 4

= -1/2 ± √177/2

x = 6.15 or -7.15 inches

The width of the rectangle can not be negative, so, 6.15 inches is the width.

Learn more about rectangle:

brainly.com/question/13048427

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