3 years ago

Which values of x would make a polynomial equal to zero if the factors of the polynomial were (x-2) and (x-11) ?

1 answer:

5 0

I havent done this stuff but I'm assuming x has to be equal to the number its being subtracted from so that the end result would be 0.

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Solve the quadratic by factoring 4x2+x=-7x-3

DedPeter [7]

Answer:

x = -3/2

x = -1/2

Step-by-step explanation:

4x^2 + 8x + 3

4x^2 + 2x + 6x + 3

2x(2x+1) + 3(2x+1)

(2x + 3) (2x + 1)

x = -3/2

x = -1/2

4 0

2 years ago

At 6am the temperature was -5. In the afternoon it was 10 C. What was the change of temperature during the day?

Arturiano [62]

la temperatura que cambio fue de15 C.

6 0

2 years ago

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Find the y-intercept(s),k if any for the equation y=x^2-16

Lyrx [107]

$the\ y-intercept:\\\\y=x^2-16\ \ \ and\ \ \ x=0\ \ \ \Rightarrow\ \ \ y=0^2-16=-16$

5 0

3 years ago

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A certain natural number is not divisible by 7. Can it be divisible by 14, explain why or why not

Elanso [62]

For a number to be divisible by 14 it needs to be both divisible by 7 and 2 which are factors of 14. Every time you have a number (x) to check if it is divisible by some larger number you find the factor of that larger number and check is the x divisible by both.

Answer: it cannot be divisible by 14.

3 0

3 years ago

f(x) = 500(1.05)x What was the average rate of change of the value of Sophia's investment from the second year to the fourth yea

hjlf

$\bf slope = {{ m}}= \cfrac{rise}{run} \implies 
\cfrac{{{ f(x_2)}}-{{ f(x_1)}}}{{{ x_2}}-{{ x_1}}}\impliedby 
\begin{array}{llll}
average\ rate\\
of\ change
\end{array}\\\\
-------------------------------\\\\
f(x)=500(1.05)^x \qquad 
\begin{cases}
x_1=2\\
x_2=4
\end{cases}\implies \cfrac{f(4)-f(2)}{4-2}
\\\\\\
\cfrac{[500(1.05)^4]~-~[500(1.05)^2]}{4-2}\implies \cfrac{56.503125}{2}\implies 28.2515625$

6 0

3 years ago