patiencekormonn
patiencekormonn patiencekormonn
  • 23-05-2021
  • Mathematics
contestada

20 POINTS!!!!!!!!!! what are two numbers that multiply to equal -13 but add to equal +7

Respuesta :

clarch19
clarch19 clarch19
  • 23-05-2021

Answer:

x = -1.525

y = 8.525

Step-by-step explanation:

xy = -13

x + y = 7

we can let 'y' equal 7-x and use substitution

x(7-x) = -13

7x - x² + 13 = 0

divide through by negative one to get a positive x²

x² - 7x - 13 = 0

use the quadratic formula to get:

x = -1.525

y = 8.525

Answer Link

Otras preguntas

by what factor does the speed of light increases when light enters from glass to air​
Can someone help me with this question please! I have nooo idea how to complete it!
in a class of 30, 80 percent of students answered a question correctly. how many got it right?
What is 3000 billion times 3000 100 and billion
How do I find the volume of this?
clarence pine top smith played what piano
Give step by step answer
the journal entry debiting cash and crediting capital would be a result of a(n)
PLEASE HELP!!! parabola (see picture)
loan 1. Victor earns a gross annual income of $84,482 and is buying a home for $185,500. He is making a 10% down payment and financing the rest with a 30-year l