marqel24 marqel24

21-02-2017
Mathematics

contestada

Find the value of "k", given that one solution of the equation x2-kx+21=0 is 3

Respuesta :

corajune99 corajune99

21-02-2017

Plug in 3 for x and solve for k.
(3)^2-3k+21=0
3k=9+21
3k=30
k=10

Answer Link

ACCESS MORE

Otras preguntas

For a covalent bond to be polar, the two atoms that form the bond must have differing atomic weights. a. differing numbers of neutrons. b. differing melting p

Why does population composition matter?

Yo compro___(these) vasos. esas eses estes estos

Reading Science Cell Differentiation Cell Structure and Function 1 Why is frog development susceptible to minor environmental changes A They live a significant

Including the direct and indirect costs, alcohol related collisions cost society _______ billion dollars annually. a) 86 b) 96 c) 106 d) 201

the density of copper is 8.92 g/cm3. What is the volume in L of a 230.14 mg sample of copper?

HELP ME ASAPPPPPPPPPPPPP

It is the year 2010 and you are part of a team that is analyzing material brought back from a robotic mission to the Moon. Your team has accumulated a list of o

your friend reads the highway sign that says "its 71 miles to watertown." Is yiur friend correct? Explain.

Miya celebrates special occasions, eats unique food, and has different family traditions than all of her friends. What could explain this difference? A. Her p