2 years ago

Solution to 21x+7y=42

Mathematics

1 answer:

Bumek [7]2 years ago

8 0

Answer: (2,0)

Step-by-step explanation:

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Let h(x)=x^2+1 h(h(h(3))) I got the answer 10202

pashok25 [27]

Answer: 10202

Step-by-step explanation:you are right! I’m pretty sure!

H(3)=10

H(10)=101

H(101)= 10202

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2 years ago

How to convert from rectangular to polar coordinates pre calc?

Verizon [17]

Given the polar coordinate (r,θ), write. x=rcos θ and. y=rsin θ.Evaluate cos θ and. sin θ.Multiply cos θ by. r. to find the x-coordinate of the rectangular form.Multiply sin θ by. r. to find the y-coordinate of the rectangular form.

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2 years ago

Soon after taking an aspirin, a patient has absorbed 320 mg of the drug. after 3 hours, only 40 mg remain. find an exponential m

Anastaziya [24]

The equation will be of the form:
$A(t)= A_{0} e^{rt}$
where A is the amount after t hours, and r is the decay constant.
To find the value of r, we plug the given values into the equation, giving:
$40=320e^{3r}$
Rearranging and taking natural logs of both sides, we get:
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$r=\frac{ln\ 0.125}{3}=-0.693$
The required model is:
$A=A _{0} e^{-0.693t}$

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2 years ago

In country X, the average yearly salary of 50-year-olds with 16 years of education is $50,275, while the average yearly salary o

nika2105 [10]

Answer:

38%

Step-by-step explanation:

The additional wage compared 12 years of education to 16 years of education is:

$Extra\ wage\%=\frac{50,275-36,265}{36,265} *100 = 38.6%$