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3 years ago

Does the equation y=x represent a function?Explain why or why not.

Mathematics

2 answers:

julia-pushkina [17]3 years ago

5 0

Answer: yes it does

Step-by-step explanation:

iris [78.8K]3 years ago

4 0

Yes because there is exactly one output for every input therefore the function is onto and one to one

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PLEASE HELP ASAP!!! CORRECT ANSWER ONLY PLEASE!!!

krok68 [10]

I think its 40 over 81, 40/81

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3 years ago

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Juan ran all the way around a circular track one time. The diameter (d) of the track is 60 meters. The formula for circumference

kenny6666 [7]

circumference is C = πd, d = diameter.

we know the diameter is 60, so one time around the track is just C = π60 which if you plug that in your calculator, we get C ≈ 188.4955592153876.

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4 years ago

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Which equation is quadratic in form?

inysia [295]

Answer:

4(x - 2)^2 + 3x – 2 + 1 = 0

Step-by-step explanation:

The equation that has a highest x-power (degree) of 2 is quadratic.

The degrees of the answer choices are ...

So, only the first answer choice is a quadratic.

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4 years ago

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If you invested $500 at 5% simple interest for 2 years, how much interest do you earn? Show work and answer in

givi [52]

Answer:

$50

$30.88

I will invest in simple interest as the interest there is more.

Step-by-step explanation:

If I invested $500 at 5% simple interest for 2 years, then the interest that I will get will be given by the formula

$I = P \times \frac{rt}{100}$ , where P is the invested principal, r is the APR and t is the time in years.

So, in our case, $I = 500 \times \frac{5 \times 2}{100} = 50$ dollars. (Answer)

Now, if I invest $500 at 3% compound interest compounded monthly for 2 years.

Now, using the formula of compound interest we have

$I = P(1 + \frac{r}{n \times 100} )^{tn} - P$ , where r is the APR and n is the number of times in a year the principal is compounded.

In our case, $I = 500(1 + \frac{3}{12 \times 100} )^{2 \times 12} - 500 = 30.88$ dollars. (Answer)

Therefore, I will invest in simple interest as the interest there is more. (Answer)

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4 years ago

Rory is staying in a cabin on a hill 300 feet above sea level. She walks down the hill to the water’s edge. The equation of her

Tatiana [17]

<span>The equation is e = 300 - 10t. t is greater or equal than 0 and given that e cannot be negative, 300 - 10 t greaetr or equal than 0 => 10 t greater or equal than 300, and t greater or equal than 300/10 = 30. This is the viable points are times from 0 to 10 and elevation from 300 to 0. Some points are (0,300) which is the initial point (when Rory is on the top); (1, 290); (2, 280); (3, 270); (4, 260); (5, 250); (6, 240); (10, 200), (20, 100), (30, 0).</span>

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3 years ago

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