All categories

3 years ago

I need to know why the answer is 12.5 and how you got it.

Mathematics

1 answer:

Tamiku [17]3 years ago

3 0

If p(4) = 16 then
n*4² + 8 = 16
16n + 8 = 16
16n = 16 - 8
16n = 8
n = 8/16 = 0.5

If n = 0.5 then
p(-3) = 0.5*(-3)² + 8
p(-3) = 0.5 * 9 + 8
p(-3) = 4.5 + 8
p(-3) = 12.5

<span>Hope this helps</span>

You might be interested in

What is the following product

Genrish500 [490]

For this case we must find the product of the following expression:

$\sqrt [3] {5} * \sqrt {2}$

By definition of properties of powers and roots we have:

$\sqrt [n] {a ^ m} = a ^ {\frac {m} {n}}$

We rewrite the expression using the lowest common index of 6, then:

$5 ^ {\frac {1} {3}} * 2 ^ {\frac {1} {2}} =$

We rewrite the terms in an equivalent way:

$5 ^ {\frac {2} {6}} * 2 ^ {\frac {3} {6}} =$

We rewrite the expression using the property mentioned:

$\sqrt [6] {5 ^ 2} * \sqrt [6] {2 ^ 3} =$

We combine using the product rule for radicals:

$\sqrt [n] {a} * \sqrt [n] {b} = \sqrt [n] {ab}$

So:

$\sqrt [6] {5 ^ 2 * 2 ^ 3} =\\\sqrt [6] {25 * 8} =\\\sqrt[6]{200}$

ANswer:

Option b

4 0

3 years ago

Sheena was organizing items in a scrapbook she took 25 photos and divided them evenly between p pages which algebraic expression

erma4kov [3.2K]

P divided by 25 that depends on how many pages there are on her scrapbook

5 0

3 years ago

Read 2 more answers

6 out of 24 employees at the water slides are temporary employees what percentage of the employees at the water slide are tempor

kykrilka [37]

Answer:

25%

Step-by-step explanation:

The question is:

6 is what percent of 24?

Set up the problem:

6 x

---- = -----

24 100

600 / 24 = 25%

Check your answer:

25% + 25% + 25% + 25% = 100%

6 + 6 + 6 + 6 = 24

3 0

3 years ago

Which equation can be simplified to find the inverse of y = 5x2 + 10?

zmey [24]

f^-1(x) = sq.rt 5(x - 10)/5, sq.rt 5(x - 10)/5 is the inverse of y = 5x^2 +10

Step-by-step explanation:

interchanging the variables

x = 5y^2 + 10

5y^2 +10 = x

5y^2 = x - 10

dividing by 5

5y^2/5 = x/5 + -10/5

y^2 = x/5 + - 10/5

y^2 = x/5 - 2

y = 5 (x-10) 0/5 (sq.rt)

g(5x^2 + 10) = 5x/5

g(5x^2 + 10) = x

f^-1(x) = sq.rt 5(x - 10)/5, sq.rt 5(x - 10)/5 is the inverse of y = 5x^2 +10

5 0

2 years ago

Read 2 more answers

The formula f= 1.8 + 32 is used to convert temputure from degrees celsius ºC to degrees

Svetach [21]

Answer:

The Formula F=1.8C+32 gives the temperature in degrees Celsius (C). There is one temperature for which a number of degrees Fahrenheit is equal to the number of degrees Celsius.

Step-by-step explanation:

20ºC = 68ºF i think this is equation.;-;

3 0

2 years ago