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harkovskaia [24]
2 years ago
12

A train travels at a constant speed for one hour and 40 minutes. During this time the train travels 95 miles. If the train conti

nues at the same Constant Speed, which equation models the number of miles,m,It Will travel in t hours?
A)m=5/3t
B)m=3/5t
C)m=31t
D)m=57t
Mathematics
2 answers:
MissTica2 years ago
6 0

The answer is D

Hope this helps

Andreas93 [3]2 years ago
3 0

Answer:

m = 57t, where the units of measurement of 57 are mph and that of t is hr.

Step-by-step explanation:

Use the given info to find the speed of the train, which is a unit rate:

  95 miles           95 mi

------------------  = ------------- = 0.95 mile/min

1 hr 40 min       100 min

Better yet, use hours, not minutes.

  95 miles           95 mi

------------------  = ------------- = 57 mph

1 hr 40 min       1 2/3  hr

Then m(t) = (rate)(time) = (57 mph)t    This corresponds to Answer D.

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Step2247 [10]
This is the concept of algebra: The answers to the questions will be as follows:
1. What is AD/AM in the simplest form:
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AD=9 units
AB=3 units
thus:
9/3=3
Hence, we conclude that the answer is D. 3

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slope=(Δy-axis)/(Δx-axis)
slope of AE
=(5-0)/(4-0)
=5/4
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slope=(5-0)/(4-3)=5/1=5
therefore the ratio of the two slope will be:
BE/AE
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=4
The answer is A.4

3. What is the value of x in the proportion (x-1)/5=(4x+2)/35?
To get the value of x we solve the above proportion:
(x-1)/5=(4x+2)/35
35(x-1)=5(4x+2)
35x-35=20x+10
putting like terms together we get:
35x-20x=10+35
15x=45
dividing both sides by 15
x=45/15
x=3
Hence the answer is B.3

4. What is the value of x in the proportion:
(x+1)/(x+3)=15/21
to get the value of x we solve the above:
first we begin by cross multiplying the proportion, this will give us:
21(x+1)=15(x+3)
21x+21=15x+45
putting like terms together we get:
21x-15x=45-21
6x=24
dividing both sides by 6 we get
x=4
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5. The lengths of the sides of a triangle are in extended ratio 3:10:12. The perimeter is 400 cm. What is the length of the longest side in cm.
solution:
Here we introduce the variable x such that the perimeter is:
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6 0
3 years ago
Read 2 more answers
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SVETLANKA909090 [29]

Answer:

\sqrt{a} = 3 + b - c

Step-by-step explanation:

All you gotta do is subtract  - b + c from both sides then simplify.

5 0
3 years ago
23/40 as a percentage
Leviafan [203]
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7 0
3 years ago
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7 0
2 years ago
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Ksivusya [100]
For this case we have the following system of equations:
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3 0
2 years ago
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