JWyatt
JWyatt JWyatt
  • 12-12-2014
  • Mathematics
contestada

what multiples to -60 and adds to -28

Respuesta :

apologiabiology
apologiabiology apologiabiology
  • 12-12-2014
so xy=-60 and x+y=-28

x+y=-28 also means x=-28-y

subsitute x=-28-y for x in xy=-60

(-28-y)y=-60
-28y-y^2=-60
add negative y^2 to both sides
-28y=-60+y^2
add 28y to both sides
0=y^2+28y-60
factor
0=(x-2)(x+30)

we set them to zero
x-2=0
x=2

x+30=0
x=-30

the numbers could be -30 and 2
Answer Link

Otras preguntas

5x7h and 35h is it expressions are equivalent
in her book the feminine mystique betty freidanwrote about what
What would happen if the sun stopped sending the earth the solar energy?
Lord and Taylor hired 400 store santa's. If each santa sees 125 children a day for 30 days, how many children are seen by Lord and Taylor's santas?
A male tiger contributes sperm to a females tiger's egg to produce a zygote. The process that produces haploid sex cells is __________. a. mitosis c. meiosis b.
Aggressively scanning the road and slower speeds gives you a better chance to avoid collision with a child
How will you connect new study material to areas that you’re already familiar with?
if a country has a low GDP, it __________. A. produces a low number of goods each year, resulting in an economically rich nation B. produces a high number o
Sickle-cell anemia is caused by incorrect sequencing of _____. a. amino acids b. hemoglobin c. fatty acids d. antibodies
What happens to air and water during the steps of cloud formation?