Question

I need help with this Polynomial functions activity!

Answer 1

@hartnn can you help me?

Answer 2

whats the activity?

Answer 3

1. Measure and record the length, width and height of the rectangular box you have chosen in inches. Round to the nearest whole number.

2. Apply the formula of a rectangular box (V = lwh) to find the volume of the object.

L = 6 W = 2.5 H = 4.5
V = 67.5

"Now suppose you knew the volume of this object and the relation of the length to the width and height, but did not know the length. Rewriting the equation with one variable would result in a polynomial equation that you could solve to find the length."

Stuck there...

Answer 4

Starting Polynomials in school so yeah...

Answer 5

im stuck on the whole thing XD thats too advanced for me

Answer 6

Fail, I messed up as it is because I didn't round let me fix that.

Answer 7

Length = 6, Width = 3, Height = 5
Volume = 90

Answer 8

say, we have Width = 3, Height = 6
Volume = 90, let Length = x
so, we have
3*6*x=90
thats your equation.

Answer 9

Okay now from here this next part confuses me... I'll copy it for you.

Answer 10

3. Rewrite the formula using the variable x for the length. Substitute the value of the volume found in step 2 for V and express the width and height of the object in terms of x plus or minus a constant. For example, if the height measurement is 4 inches longer than the length, then the expression for the height will be (x + 4).

Answer 11

Do I basically do what you did?

Answer 12

Width = 3, let Length = x
let the height measurement is 1 inches longer than the length
H=x+1
Volume = 90,
so, we have
3*(x+1)*x=90

Answer 13

so we can find x from that equation, which gives us length
hence height will be just x+1

Answer 14

Sorry was cooking, one second.

Answer 15

4. Simplify the equation and write it in standard form.

5Find the solutions to this equation algebraically using the Fundamental Theorem of Algebra, the Rational Root Theorem, Descartes' Rule of Signs, and the Factor Theorem.

(Hint: If the numbers are large, graph the function first using GeoGebra to help you find one of the zeros. Use that zero to find the depressed equation which can be solved by factoring or the quadratic formula.)

6. Substitute 0 for the function notation and, using graphing technology, graph the function.

@hartnn

Answer 16

@experimentX

Answer 17

you are asking too many question on same thread. close this one .. and start new thread.

Answer 18

Okay!