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loris [4]
2 years ago
15

Suppose a family starts out 50 miles from home at time t = 0. They travel away from home at a constant speed of 45 miles an hour

. What's the equation that tells you how far they'll be from home t hours later? (Assume d is distance in miles.) A. d = 45t + 50 B. d = 45t C. d = 50t D. d = 50t + 45
Mathematics
2 answers:
sashaice [31]2 years ago
7 0
At t = 0  d = 50.
At time = 1 hour , d = 50 + 45(1)
At time = 2 hours, d = 50 + 45(2)

So its d = 50 + 45t  or  d = 45t + 50

Choice A is the correct one.
skelet666 [1.2K]2 years ago
3 0
50 miles, t=0 is the start
45 miles each 1 hour

A. d= 45•t+50
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3 years ago
An object is traveling at a steady speed of 10 and one tenth km​/h. How long will it take the object to travel 4 and nine tenths
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Estimated Answer=\frac{1}{2} hour

Exact Answer= \frac{49}{101} hr

Step-by-step explanation:

Steady speed of the object =10 and one tenth km​/h = 10\frac{1}{10} km/hr

Distance to be Covered=4 and nine tenths km =4\frac{9}{10} km

To the nearest integer,

Steady speed of the object = 10 km/hr

Distance=5km

Time Taken = \frac{Distance}{Average Speed}

==\frac{5}{10} =\frac{1}{2} hr

The estimated answer is 1/2 hr.

Next, we determine the exact answer.

Time Taken = \frac{Distance}{Average Speed}\\  = 4\frac{9}{10} \div 10\frac{1}{10}\\=\frac{49}{10} \div \frac{101}{10}\\=\frac{49}{10} X \frac{10}{101}\\=\frac{49}{101} hr

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3 0
3 years ago
X^2 + 10x +7= 0<br> How do I solve this pls explain it step by step.
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Answer:

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Step-by-step explanation:

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6 0
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10) You and your friends order a meal for $116.29. How much tip should you leave if you want to leave a 12% tip?
professor190 [17]

Answer:

$13.95

Step-by-step explanation:

First, convert the 12% to an actual number that can be used in a calculation. For percents,this is always done by simply dividing the percent (in this case 12%) by 100%.So, the conversational term "12%" becomes 12% / 100% = 0.12 in terms of a real mathematical number.

Second, you need to find out what 12% of your $116.29 meal cost is.This is always done by multiplying 0.12 by $116.29, or

0.12 x $116.29=$13.95.

3 0
2 years ago
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