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Otrada [13]
2 years ago
7

If t varies as v, and t = 2 4/7 when v = 13/14 , find v when t = 2 1/4.. v=. Direct variation. .

Mathematics
2 answers:
Ksivusya [100]2 years ago
7 0

Answer:

13/16

Step-by-step explanation:

"t varies as v" => t(v) = kv, where k is the constant of proportionality.

If t = kv, then this is true:  2  4/7 = k(13/14), or

18/7 = (13/14)k

Solving for k, we get:

(14/13)(18/7) = k = 36/13

Therefore, our equation is    t = (36/13)v.

Now let t = 2  1/4 or 9/4, and find the corresponding v:

9/4 = (36/13)v, or v = (9/4)(13/36) = 0.8125 = 13/16

v = 13/16 when t = 2  1/4.

Alex_Xolod [135]2 years ago
6 0

Answer:

13/16

Step-by-step explanation:

Direct variation is when one variable is equal to a constant times another variable. In this case, t varies as v, so, t = k*v, where k is a constant. We know that t = 2 4/7 = 18/7 when v = 13/14, then:

18/7 = k*13/14

18/7*(14/13) = k

36/13 = k

Replacing in the formula with t = 2 1/4 = 9/4, we get:

9/4 = 36/13*v

9/4*(13/36) = v

13/16 = v

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Given:

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5 0
2 years ago
PLEASE HELP!
Nadya [2.5K]

Draw the DE ray away from the BAC angle is the next step to copy the BAC angle

<h3>Further explanation </h3>

Angles can be formed from two ray lines that have the same starting point

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8 0
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Fiesta28 [93]
<span>Let
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we know that
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Natasha_Volkova [10]

Answer:

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Step-by-step explanation:

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