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crimeas [40]
3 years ago
13

Maria walks at a rate of 3 meters per second on a moving walkway traveling at a speed of 1 meter per second in the opposite dire

ction. Maria walks a distance d for t seconds until a security guard tells her she must move in the opposite direction. Which equation best represents this information?
A. d=2t
B. 4/t = d
C. d=4t
D. 2d=t
Mathematics
1 answer:
vichka [17]3 years ago
4 0
When you set up equations like this, look at the units for help. They cancel out during division and multiplication like numbers to give desired quantities. Rates can be reversed if need be (3 meters/sec or 1/3 sec/meter).

time × (distance / time) = distance
See.. time/time = 1;  leaving distance

Subtract the rate of the opposing walkway...
t × (3 m/s - 1 m/s) = d
2t = d

Answer is then A.
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MA_775_DIABLO [31]

Answer:

5

Step-by-step explanation:

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They need to sell x jeans to get to $500.

$500 - $300

$200

They’re $200 short of their goal.

A pair of jeans cost $40

Therefore x40 = $200

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5 0
4 years ago
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Genrish500 [490]

Answer:

The correct answer is

Step-by-step explanation:

Snow cone holders are sold in sleeves of 50.

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5 0
3 years ago
a source of laser light sends rays ab and ac toward two opposite walls of a hall. the light rays strike the walls at points b an
marissa [1.9K]
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4 0
3 years ago
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Mariulka [41]
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6 0
3 years ago
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8 0
3 years ago
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