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charle [14.2K]
3 years ago
13

Solve each proportion 5/t = t/45

Mathematics
2 answers:
Oksi-84 [34.3K]3 years ago
7 0
45t\cdot \frac { 5 }{ t } =\frac { t }{ 45 } \cdot 45t\\ \\ 225={ t }^{ 2 }\\ \\ t=\pm \sqrt { 225 } \\ \\ t=\pm 15
insens350 [35]3 years ago
5 0
T = 15 or -15 because you solve proportions by cross multiplying. if you write it out in the following way:

5       t
__=  __
t       45

Then, cross multiplying involves multiplying the numerator( number at the top) of one of the fractions with the denominator (number at the bottom) of the other, and setting the two results equal to each other. You get t * t = 5 * 45 and end up with t^2 = 225 or t = (15 or -15)
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Answer:

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Step-by-step explanation:

slope = rise/run

rise is the vertical change, run is the horizontal change

7. a)

Pick any two points on your line. (0,0) and (1,5) are easy to work with.

The vertical change between the two points is 5

The horizontal change between those points is 1

so slope = 5/1 = 5

7. b)

Again, you can use (0,0) as one of your points. The point (2,4) is good as the second.

slope = 4/2 = 1/2

8. We don't have a graph, but we are given two points to work with, (1,4) and (5,8). Use the formula given...

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Answer: See the full explanation.

Step-by-step explanation:

You can actually do this using various life scenario. Let me help you with this example.

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Answer:

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Step-by-step explanation:

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