michellewilliam michellewilliam

08-09-2014
Mathematics

Answered

solve the problem. give that f(x)=4x²-7x;find all values of a such that f(a)=15 HELP!!!

Answer :

konrad509 konrad509

08-09-2014

[tex]4x^2-7x=15\\ 4x^2-7x-15=0\\ 4x^2-12x+5x-15=0\\ 4x(x-3)+5(x-3)=0\\ (4x+5)(x-3)=0\\ x=-\frac{5}{4} \vee x=3[/tex]

Answer Link

Other Questions

When people were retested alone a year after Sherif's autokinetic experiment, they ______, suggesting ______.A) continued to support the group normB) compliance

Which point does not belong? A valid Specific Claim occurs when:A. A treaty or agreement has been fulfilled. B. A breach of the Indian Act or other statutory ob

In "An Ancient Gesture," what is the difference between the gesture made by Penelope and the gesture made by Ulysses (Odysseus)?

Read the statement below and answer the question that follows. The integration of art with other subjects in the classroom is a best practice since it teaches a

What is the equation of the line that is perpendicular to the given line and has an [tex]$x$[/tex]-intercept of 6?A. [tex]\( y = -\frac{3}{4} x + 8 \)[/tex]B. [

2. The price of a popular toy car has gone up from [tex]$25 to $[/tex]50. What effect would this have on the supply of the toy car?A. The quantity demanded will

[tex]$\triangle RST \sim \triangle RYX$[/tex] by the SSS similarity theorem.Which ratio is also equal to [tex]$\frac{RT}{RX}$[/tex] and [tex]$\frac{RS}{RY}$[/te

The name of CCl₄ is carbon tetrachloride. A. TrueB. False

Suppose there are two functions \( f \) and \( g \), whose values are defined by the table below. Calculate \( f(3) + f(2) \).[tex]\[ \begin{tabular}{|c|c|c|c|c

If an image of a triangle is congruent to the pre-image, what is the scale factor of the dilation?A. 0.1B. [tex]$\frac{1}{2}$[/tex]C. 1D. 10

Which has more Potential Energy a car parked on the top of the hill,a person on the top of the same hill sitting down eating a sandwich, or a man running fast a

How can I split five brownies between three people

why do volcanoes erupt in the part of the world where Mont Isle is located??

What is the simplest form of the fraction 4/10

7 qt. 2c. =______ c.

Explain why sedimentary rocks are found as a veneer covering large areas of the continental igneous rocks

Frank is putting up a wallpaper in his bedroom. His bedroom measures 1 1/8 feet long and 9 3/4 feet wide. What is the perimeter of Franks bedroom?

Calculate the average speed of a bicycle that travels 100m in 20 s.

Your grandmother in Ireland sends you her favorite cookie recipe. Her instructions say to bake the cookies at 190.5°C. To what Fahrenheit temperature would you

Tickets to a play cost $14 each by mail, plus a $2 processing fee for each order or one or more tickets. Write a rule to describe the total cost as a function o