atc1921 atc1921

02-09-2016
Mathematics

contestada

what two numbers multiply to get 30 also add up to get -4????

Respuesta :

nobillionaireNobley nobillionaireNobley

04-09-2016

Let the two numbers be x and y
xy = 30 . . . . . (1)
x + y = -4 . . . . .(2)
From (2), x = -4 - y . . . . . (3)
Putting (3) into (1), we have:
(-4 - y)y = 30
-4y - y^2 = 30
y^2 + 4y + 30 = 0
y = -2 + i√26 and x = -2 - i√26

Answer Link

Otras preguntas

1. Arc QR = Arc RS = 2. Find x and y -- if your answer is not a whole number, round to the tenths!

What is the sum of the matrices shown below? 3 6 0 9 5 -2 + 6 0 -8 4 =

In how many ways can a person order one ice cream cone with 3 different flavors of ice cream if there are 14 flavors to choose from and it matters to the person

Crates of masses 1 kg , 4 kg , and 6 kg are placed in a line on a frictionless table. They remain in contact as they are pushed by a 60 N force applied to the 1

Solve each equation. |x+5|=-3

What is 4.5 repeating as a fraction?

Solve each equation. |x+5|=-3

The monthly cost of water use is a linear function of the amount of water used (HCF). The cost for using 16 HCF of water is $39.04, and the cost for using 44 HC

a service station on the interstate changes $2.29 per gallon of gasoline and $1.89 per quart for oil. What would be a recourable amount to pay for 10 gallons of

Maria is going to purchase cranberry juice and lemon-lime soda for a new fruit punch recipe. The recipe calls for 3.5 times as many bottles of lemon-lime soda a