Let x and y be the 2 parts of 15 ==> x + y=15 (given)
Reciprocal of x and y ==> 1/x +1/y ==> 1/x + 1/y = 3/10 (given)
Let's solve 1/x + 1/y = 3/10 . Common denominator = 10.x.y (reduce to same denominator)
==> (10y+10x)/10xy = 3xy/10xy ==> 10x+10y =3xy
But x+y = 15 , then 10x+10y =150 ==> 150=3xy and xy = 50
Now we have the sum S of the 2 parts that is S = 15 and
their Product = xy =50
Let's use the quadratic equation for S and P==> X² -SX +P =0
Or X² - 15X + 50=0, Solve for X & you will find:
The 1st part of 15 is 10 & the 2nd part is 5
Ans
I = sqrt(P/R)
Step-by-step explanation:
You divide both sides by R first
P/R = I^2 R/R
So,
I^2 = P/R
take the square root of both sides
I = sqrt(P/R)
The area of the garden is 120 square metre
<h2>
Explanation:</h2>
The picture of the garden is shown below. In this problem, we have:
Recall that the area of a square is given by:

On the other hand, the area of a rectangle is given by:

Therefore:
FOR THE SQUARE:

FOR THE RECTANGLE 1:

FOR THE RECTANGLE 2:

Finally, the area of a garden is the sum of the three areas:

<h2>Learn more:</h2>
Area of a pizza: brainly.com/question/12878495
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The answer to your query is 19.2
Answer:
He drove 63 miles in one day
Step-by-step explanation:
151.2/2.4=63