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3 years ago

If I = PRT/100, MAKE R THE SUBJECT OF THE FORMULA.

Mathematics

1 answer:

Nonamiya [84]3 years ago

6 0

Answer:

R = $\frac{100I}{PT}$

Step-by-step explanation:

I = $\frac{PRT}{100}$ ( multiply both sides by 100 to clear the fraction )

100I = PRT ( isolate R by dividing both sides by PT )

$\frac{100I}{PT}$ = R

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A fence is to be built to enclose a rectangular area of 260 square feet. The fence along three sides is to be made of material t

Nat2105 [25]

Answer:

Length of the rectangle = 9.58 feet and width = 27.14 foot

Step-by-step explanation:

Let the length of the rectangular area is = x feet

and the width of the area = y feet

Area of the rectangle = xy square feet

Or xy = 260

y = $\frac{260}{x}$ -------(1)

Cost to fence the three sides = $3 per foot

Therefore cost to fence one length and two width of the rectangular area

= 3(x + 2y)

Similarly cost to fence the fourth side = $14 per foot

So, the cost of the remaining length = 14x

Total cost to fence = 3(x + 2y) + 14x

Cost (C) = 3(x + 2y) + 14x

C = 3x + 6y + 14x

= 17x + 6y

From equation (1)

C = $17x+\frac{260\times 6}{x}$

Now we take the derivative,

C' = 17 - $\frac{1560}{x^{2} }$

To minimize the cost of fencing,

C' = 0

17 - $\frac{1560}{x^{2} }$ = 0

$\frac{1560}{x^{2} }$ = 17

$x^{2} =\frac{1560}{17}$

$x=\sqrt{\frac{1560}{17} }$

x = 9.58 foot

and y = $\frac{260}{9.58}$

y = 27.14 foot

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3 years ago

How many ways can you select a shirt and shoes if you have 5 pants, 7 shirts, and 3 pairs of shoes to choose from

Helga [31]

5*7*3
35*3 = 105 ways

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3 years ago

When a whole number is multiplied by 10 to the power of 4 how does the placement of the decimal point change

Wittaler [7]

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Answer:

The decimal point moves 4 places to the right

Step-by-step explanation:

Take a simple case using the whole number 3.

3. — whole number we're starting with

3.×10^4 = 3.×10,000 = 30,000. — multiplied by 10^4

The decimal point moves 4 places to the right.

_____

<em>Additional comment</em>

Multiplying be a positive power of 10 moves the decimal point a number of places equal to that power. Effectively, the number of zeros added on the right is equal to the power of 10. Above, you will notice multiplying by 10^4 added 4 zeros to the right of the number.

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2 years ago

What percent of 9 is 1 <br><br> Whole number,fraction,or mixed number

DaniilM [7]

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Answer:

11 1/9%

Step-by-step explanation:

1/9 × 100% = (100/9)% = (11 1/9)%

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3 years ago

0.000387 in scientific notation

jasenka [17]

Answer:

0.000387 = 3.87 × 10^-4

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3 years ago

If I = PRT/100, MAKE R THE SUBJECT OF THE FORMULA.​

If I = PRT/100, MAKE R THE SUBJECT OF THE FORMULA.