candy802 candy802

19-03-2017
Mathematics

Answered

Which quadratic equation crosses the x-axis at 4 and -9?

A. y=x^2-5x-36
B. y=x^2+5x+36
C. y=x^2+5x-36
D. y=x^2-5x+36

Verified Answer :

apologiabiology apologiabiology

19-03-2017

if it crosses at r1,r2 then it factors to f(x)=(x-r1)(x-r2)
crosses at 4 and -9
factors to f(x)=(x-4)(x-(-9))=(x-4)(x+9)=x²+5x-36

answer is C

Answer Link

Related Questions

I bought 4 dozen eggs at 10 per dozen 6 eggs were broken what percentage of the money goes to waste

Which form of government practiced in certain Greek citystates describes rule by an individual who assumes absolute power by seizing control illegally often wit

Who united and expanded the Mongol Empire a Genghis Khan b Kublai Khan c Tangut Xixia d Kara Khitai

What is a tool used to see the movement of storm clouds

what is the full form of ATP Can you help me pls

what is 72100 simplified

If there were no current in the wire running through the magnet what could you do to induce an electric current

Is 3652727272727272727 a rational number

A set contains 23 elements set B contains 15 elements and 13 elements are common to sets A and B how many elements are in set A

What is a pulsar a the remains of a lowmass star after it explodes b a spinning neutron star emitted radio waves c another name for a protostar d the stage befo

Web Analytics Made Easy - Statcounter