3 years ago

If z varies directly as x and z=30 when x=8 fine z when x=4

Mathematics

1 answer:

Lelechka [254]3 years ago

5 0

So for this one all you have to do is use the formular

Z*k=x

30k=8

K=4/15

Then when x=4

4/15x=4

So x=15

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CAN SOMEONE SHOW ME HOW TO DO THIS PLEASE????????????????

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For (h+g)(x) you just add the two functions:

(h+g)(x) = 4x + 2x^2

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3 years ago

You invest 1,600 in an account that pays an interest rate of 6.5% compounded continuously calculate the balance after 6 years

tangare [24]

The amount A when the principal P is compounded continuously is given by the formula :

$A=P E^{rt}$

Here r is rate of interest and t is time .

In the question P=1600 ,r=6.5%=0.065 ,t= 6 years

Substituting these values in the formula

$A=(1600) e^{0.065 times 6}$

A= 1600(1.48)

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Balance after 6years is $2363.17

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