3 years ago

Evaluate p2 - r2 for p = 10, r = -4 and t = 5.

Mathematics

1 answer:

AlexFokin [52]3 years ago

4 0

Answer:

Step-by-step explanation:

p^2-r^2= 10^2-(-4)^2

100-16=84

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A man sold a fan for Rs. 400. Find the cost price if he incurred a loss of 15%.

statuscvo [17]

Answer:

Cost price of the fan is $\text {Rs. 470.59}$ .

Step-by-step explanation:

Given: A man sold a fan for $\text{Rs.}\:400$ . He incurred a loss of $15\%$ .

To find: The cost price of the fan

Solution:

We have,

Selling price, S.P., of the fan $= \text{Rs.} 400$

Loss $=15\%$

We know that $\text {Loss\%}=\frac{\text{C.P.-S.P.}}{\text{C.P.}}\times100\%$

Now let the C.P. of the fan be $\text{Rs.} \:x$

So, $15=(\frac{x-400}{x})\times 100$

$\implies 15x=100x-40000$

$\implies 100x-15x=40000$

$\implies 85x=40000$

$\implies x=\frac{40000}{85}$

$\implies x= 470.59$

Hence, the cost price of the fan is $\text {Rs. 470.59}$ .

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3 years ago

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Whats the answer to (m-n)(-3)

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The answer is -3m + 3n

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The area of the triangle below is 33.62 square feet. What is the length of the base?

Lemur [1.5K]

Answer:

8.2 ft

Step-by-step explanation:

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Which equation represents a proportional relationship?

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Answer:

5x+2

Step-by-step explanation:

I think it is 5x+2

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