All categories

2 years ago

Which graph represents polynomials function f(x)=x^3+4x^2-15x-18

Mathematics

2 answers:

aliina [53]2 years ago

6 0

Just took the quiz, got it right so here it is.

Hope I could help! :D

olya-2409 [2.1K]2 years ago

4 0

The bottom left, lies never -6 on x axis and 20 on y axis

You might be interested in

How many games were played in this season? Which range of runs scored during a game occurred most frequently? Which data fits wi

inessss [21]

I don't see how the numbers on the chart work with the table because I

got 1(1), 3(2,2,2), 6(4,4,4,4,4,4), 10(6,6,6,6,6,6,6,6,6,6), 5(8,8,8,8,8), 3(10,10,10) ,1(12)

that is how i see the chart, sorry if i got it wrong.

7 0

2 years ago

13....................

Mashcka [7]

13.

(a)

$y=-5x^2+21x-3$

for x = 2:

$y=-5(2)^2+21(2)-3=-20+42-3=19$

for x = 5

$y=-5(5)^2+21(5)-3=-125+105-3=-23$

(b)

The graph is:

(c)

Using the graph:

$\begin{gathered} x=1.8,y=18.6 \\ x=0.548,y=7 \\ x=3.65,y=7 \end{gathered}$ $\begin{gathered} x=1.8 \\ y=-5(1.8)^2+21(1.8)-3=-16.2+37.8-3=18.6 \end{gathered}$ $\begin{gathered} y=7 \\ -5x^2+21x-3=7 \\ -5x^2+21x-10=0 \end{gathered}$

Using the quadratic formula:

$\begin{gathered} x=\frac{-b\pm\sqrt[]{b^2-4ac}}{2a} \\ x=\frac{-21\pm\sqrt[]{21^2-4(-5)(-10)}}{2(-5)} \\ x=\frac{-21\pm\sqrt[]{241}}{-10} \\ x=0.54758 \\ or \\ x=3.6524 \end{gathered}$

6 0

9 months ago

Help on number 9 please!

lutik1710 [3]

2x+2

Work:

Factor 2x^2+10x+12: 2(x+2)(x+3)

Cancel all x+3, leaving 2(x+2)

2x+2

4 0

2 years ago

A shopkeeper bought a television for Rs. 10000 and he sold it at profit of 25%. What was the selling price of the television? Pl

-Dominant- [34]

Answer:

12,500

Step-by-step explanation:

125%/100% x 10000

12,500

6 0

2 years ago

Plz help me ...<br> please

r-ruslan [8.4K]

Answer:

x = -1, and y = -2, giving you the answer (-1, -2)

Step-by-step explanation:

In the second equation, we're told that y is equal to 2x. With that, we can replace "y" in the first one with "2x", giving us:

-4x - 2x = 6

-6x = 6

x = -1

Now that we know the value of x, we can simply plug it into the first equation to find y:

-4x - y = 6

-4(-1) - y = 6

4 - y = 6

-4 + y = -6

y = -6 + 4

y = -2

So x = -1, and y = -2

6 0

2 years ago

Read 2 more answers