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3 years ago

Inverse equation t=120r/r+120 R=???

Mathematics

1 answer:

Komok [63]3 years ago

7 0

9514 1404 393

Answer:

r = 120t/(120-t)

Step-by-step explanation:

Multiply by the denominator, isolate r terms, then divide by the coefficient of r.

$t=\dfrac{120r}{r+120}\qquad\text{given}\\\\t(r+120)=120r\qquad\text{multiply by $(r+120)$}\\\\120t=120r-tr\qquad\text{subtract $tr$}\\\\\dfrac{120t}{120-t}=r\qquad\text{divide by the coefficient of $r$}\\\\\boxed{r=\dfrac{120t}{120-t}}$

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3 years ago

In a class of 40 students, 5 like neither Nokia nor

Vikki [24]

Answer:

No student liked only Nokia

Step-by-step explanation:

The information can be illustrated as shown on the Venn diagram.

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3 years ago

The sum of the ages of Levi and Monique is 76 years. 8 years ago, Levi's age was 3 times Monique's age. How old is Levi now?

andreev551 [17]

Answer:

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Step-by-step explanation:

sum = 76yrs

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8yrs ago

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3x + x = 60

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x = 15yrs

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= 15 x 3

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3 years ago

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3 years ago

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asambeis [7]

Answer:

177 ft below sea level.

Step-by-step explanation:

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Now, we will have to subtract to find the new altitude.

New altitude = 282 - 120 = 162 ft

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To find the final altitude, we will have to add it to the previous altitude.

Therefore, the final altitude = 162 + 15 = <em>177 ft below sea level </em>

6 0

3 years ago