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irina [24]
3 years ago
12

A train is traveling at a constant speed and goes a distance of 7 ½ kilometers in 6 minutes. The train will continue to travel a

t this speed. The train will travel a distance of d kilometers in m minutes. Write an equation that represents the relationship between d and m.
Mathematics
1 answer:
g100num [7]3 years ago
6 0

Answer:

m = 1.25d

Step-by-step explanation:

A train is traveling at a constant speed and goes a distance of 7 ½ kilometers or 7.5 km in 6 minutes.

6 min = 7.5 km

1 min = (7.5/6) km/min

= 1.25 km/min

or

In m min, (7.5/6)d is travelled by the train. Hence, the relation between d and  is :

m=\dfrac{7.5d}{6}\\\\m = 1.25d

Hence, this is the required solution.

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matrenka [14]

Answer:

A) The legs are 9 & 12 inches.

B) The hypotenuse is 15 inches.

<em>Hope that helps! :) <3</em>

Step-by-step explanation:

8 0
3 years ago
A line has the equation 3x ? 4y = 1. Choose the equation of a line that is parallel to the given line.
cupoosta [38]

Answer:

Find a line which also has 3/4 as the slope or 3x - 4y in standard form.

Step-by-step explanation:

If the line is 3x - 4y = 1 then the line which is parallel will have the same coefficients of x and y. Parallel lines never cross and to ensure this have the same slope. The slope is a ratio which can be solved for in an equation using the coefficients of x and y. Here the slope is:

3x - 4y = 1

-4y = -3x + 1

y = 3/4x - 1/4.

Find a line which also has 3/4 as the slope or 3x - 4y in standard form.

7 0
3 years ago
Read 2 more answers
The graph of an absolute value function y=a|x| includes the points (1,6) and (-1,6)
lys-0071 [83]

Answer: y=6|x|

Step-by-step explanation:

I attached the graph too!

4 0
3 years ago
The volume of a right cylinder is V = πr2h. If we have an oblique cylinder, like in the figure, what is the volume of a cross-se
olchik [2.2K]
Since you did not attach any picture we cannot say for sure what is the correct answer, but we can discuss the options in order to find the most probable correct answer.

First of all, according to the Cavalieri's principle, an oblique cylinder has the same volume as a right cylinder with the same base surface area and same height.
A cross-section of an oblique cylinder will be a small right cylinder with the same base surface area and a height as small as possible.

I guess the oblique cylinder has height h and it is divided into many (probably 10) cross-sections.

Option A: <span>πr2h
This is exactly the volume of the right cylinder, therefore, unless you are given a cross-section of height h (which would be too easy), this won't be the correct answer.

Option B: </span><span>4πr2h
This is 4 times the right cylinder. Again, here the height of the cross-section should</span> be 4h, but it doesn't sound like a possible data (too easy again).

Option C: <span>1 10 πr2h
Here comes a n issue with the notation: I think the right number you meant to write is (1/10)</span>·πr2h and not 110·<span>πr2h.
If I am right, this means that your oblique cylinder of height h is divided into 10 cross-sections, and therefore the volume of each of these cross-sections will be a tenth of the volume of the oblique cylinder, which means </span>1/10·<span>πr2h.

Option D: </span><span>1 2 πr2h
Here, we have the same notation issue as before. I think you meant (1/2)</span>·<span>πr2h.
Here, your oblique cylinder height h should be divided into only 2 cross-sections. Now, we said the cross-section's height should be the smallest as possible, so an oblique cylinder divided only into two pieces doesn't sound good.

Therefore, the most probable correct answer will be C) </span>(1/10)·<span>πr2h</span>
8 0
3 years ago
Read 2 more answers
X + y = 7, what is the value of 2x + 2y -2?<br>btw please hurry, thx &lt;3
stira [4]

Answer:

The answer is 12 because 2x is just 8 and 2y is just 6 so add that and get 14 then subtract 2.

Step-by-step explanation:

5 0
2 years ago
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