Ask question

Ask question

All categories

3 years ago

14

Which quadratic equation defines the function that has zeros at −1/12 and 1/4

1 answer:

erastova [34]3 years ago

5 0

$\bf \begin{cases}
x=-\cfrac{1}{12}\implies 12x=-1\implies &12x+1=0\\\\
x=\cfrac{1}{4}\implies 4x=1\implies &4x-1=0
\end{cases}\\\\
-----------------------------$

$\bf (12x+1)(4x-1)=\stackrel{original~polynomial}{0}\implies \stackrel{FOIL}{48x^2-8x-1=y}$

You might be interested in

If h(2)=7 and h'(2)=-2,find d/dx [(h(x))/(x)] <br> A. –11/4 B. 2 C. D. 8 E. 16

valentinak56 [21]

Answer:

A. $\frac{-11}{4}$

Remember that if f and g are functions with $g(x)\neq 0$ then, $\frac{d}{dx}\frac{f(x)}{g(x)}=\frac{f'(x)g(x)-g'(x)f(x)}{g(x)^2}$ .

Then,

$\frac{d}{dx}\frac{h(x)}{x}=\frac{h'(x)x-h(x)}{x^2}$

Evaluating in x=2,

$\frac{h'(2)*2-h(2)}{2^2}=\frac{-4-7}{4}=\frac{-11}{4}$

Then the answer is A.

7 0

4 years ago

How many ten dollar bills are there in twenty one hundred dollar bills

Artist 52 [7]

There are 210 ten dollar bills because if you do 2100/10 you get 210!

8 0

3 years ago

How long would it take you to bike 255 miles at a speed of 15 miles per hour

Alla [95]

15
--------
15|225
-15
------
75
-75
-------
0

It will take you 15 hours

6 0

3 years ago

Read 2 more answers

Which sentence does not contain any errors in comma usage?

noname [10]

It's d because a common goes after Alaska and after state

4 0

3 years ago

What is equivalent to 3^4/3^7

Misha Larkins [42]

i believe your answer will be 0.04 or 4/100

OR if you need an equivalent expression, that would be 81/2187

5 0

3 years ago