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anzhelika [568]
3 years ago
14

If K = (AB)/(A+B) , then B = ?

Mathematics
1 answer:
marysya [2.9K]3 years ago
6 0

Lets do

\\ \sf\longmapsto K=\dfrac{AB}{A+B}

\\ \sf\longmapsto \dfrac{1}{K}=\dfrac{A+B}{AB}

\\ \sf\longmapsto \dfrac{1}{K}=\dfrac{1}{A}+\dfrac{1}{B}

\\ \sf\longmapsto \dfrac{1}{B}=\dfrac{1}{K}-\dfrac{1}{A}

\\ \sf\longmapsto \dfrac{1}{B}=\dfrac{K-A}{AK}

\\ \sf\longmapsto B=\dfrac{AK}{K-A}

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Which of the following equations would not have a solution that is the same as the solution to the system. shown below?
Shtirlitz [24]

Answer:

Step-by-step explanation:

8 0
3 years ago
. The function s(l) = 1.34 √l models the maximum speed s in knots for a sailboat with length l in feet at the waterline. a. Use
trasher [3.6K]

Answer:

The length of the sailboat is 80 feet.

Step-by-step explanation:

The function  

s(l) = 1.34 \sqrt{l} ................ (1)  

models the maximum speed s in knots for a sailboat with length l in feet at the waterline.

So, using this model we have to find the length of a sailboat with a maximum speed of 12 knots.

Now, from equation (1) we get

12 = 1.34 \sqrt{l}

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{The value is round to the nearest foot}

5 0
3 years ago
If f (x) = -3x +4 and g (x)= x squared, find (g*f) (-2)
ANTONII [103]
The easiest way to do this is to work out f(-2) first, =-3(-2)+4=10, then find g(-2)=(-2)²=4.
(g*f)(-2)=4×10=40.
However, if g*f means g of f the answer is different, because having worked out that f(-2)=10 we put this result into g, so we find g(10)=10²=100.
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4 years ago
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Neko [114]

Answer:

no solution

Step-by-step explanation:

Hello,

5(x-2)=5x-7\\ 5x-10=5x-7\\ -10=-7

and this is always false so there is no solution

8 0
4 years ago
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shutvik [7]
4th quadrant is positive x (cos) and negative y (sin)

Use the Pythagorean Theorem to calculate the value of y (sin).
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Since the y-value is negative in the 4th quadrant, then y = -12
6 0
4 years ago
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