lalabu9 lalabu9

10-11-2020
Mathematics

contestada

What is the solution to this system of equations?

x − 2y = 15
2x + 4y = -18

Respuesta :

meghannaylis meghannaylis

10-11-2020

Answer:

y=-6 ; x=3

Step-by-step explanation:

x − 2y = 15

2x + 4y = -18

x − 2y = 15

+2y . +2y

x=2y+15

2(2y+15) + 4y = -18

4y+30+4y=-18

8y+30=-18

-30 . -30

8y=-48

y=-6

x=2(-6)+15

x=-12+15

x=3

Answer Link

Otras preguntas

You use 66 gallons of water on 2020 plants in your garden. At that rate, how much water will it take to water 3030 plants?

Qui sont les clèrs au moyen âge

Find the constant of proportionality k. Then write an equation for therelationship between xandy(Example 2)2. X8 16y 10 2030 40ESSENTIAL QUESTION CHECK-IN4. How

Who was favored to win the scheduled 1956 national elections to unify vietnam?

Solar flares (was, were) the cause of the difficulty, and new instruments (is, are) the solution. Which verbs correctly complete the sentence?

As ancient egypt rose to be a more complex civilization, developments in the field of architecture were astonishing. as one pharaoh succeeded another, the need

The motivating force for something is called _____. effect abstract fallacy cause logic

predict how the rate of cell division would differ between single-celled algae living in a sunny,nutrient-rich pond versus algae living in a shady, nutrient-poo

evaluate each expression if x=2 and y= -6 a) (xy)^2 B) xy^2 C(x+y)^-4

Which object converts sunlight into sugars