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3 years ago

80% is 125% of what number?

Mathematics

1 answer:

Korvikt [17]3 years ago

5 0

Answer:

125 is 80% of 156.25

Working out percentages

We have, 80% × x = 125

or,

80

100

x = 125

Multiplying both sides by 100 and dividing both sides by 80,

we have x = 125 ×

100

x = 156.25

If you are using a calculator, simply enter 125×100÷80, which will give you the answer.

Hope This Helps! Have A Nice Day!!

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vichka [17]

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Step-by-step explanation:

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2 years ago

Question 3 Unsaved

bazaltina [42]

Answer:

Step-by-step explanation:

DE given is

y''+8y'+15y=0, y(0)=0, y'(0)=1

Take Laplace on the DE

We get

$s^2 Y(s) -sY(0) -y'(0)+8(sY(s)-y(0))+15Y(s) =0\\s^2 Y(s) -s(0) -1+8(sY(s)-0)+15Y(s) =0\\Y(s)(s^2+8s+15)-1=0\\Y(s) = \frac{1}{s^2+8s+15}$

Simplify to get

Y(s) = $\frac{1}{2}[ {\frac{1}{s+3} -\frac{1}{s+5} }]$

Take inverse

$y(t) = \frac{e^{-3t} -e^{-5t}}{2}$

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2 years ago

Suppose that y varies inversely as x and that y=8 when x=3. Calculate the value of y when x= 10.

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2 years ago