3 years ago

X+y=-4 2x+4y=-12 Stop by substitution

Mathematics

1 answer:

just olya [345]3 years ago

4 0

Answer:

X=4-y

2(4-y)+4y=12

8-2y+4y=12

2y=12-8

2y=4

y=4/2

y=2

x=4-y

x=4-2

x=2

You might be interested in

The function f is defined by f(x)=x^2-5 find f(2y)

Anuta_ua [19.1K]

$\bf f(x)=x^2-5\qquad \qquad f(2y)=(2y)^2-5\implies f(2y)(2^2y^2)-5
\\\\\\
f(2y)=4y^2-5$

4 0

4 years ago

How to do two step inequalities

Rudik [331]

If I were you, I would search it up on VirtualNerd but you first undo using the opposite of PEDMAS and if you divide or multiply with a negative integer, the direction of the inequality thing in the middle of the equation switches directions.

3 0

3 years ago

Solve 5x = 2 written a afrction inits simplest form

Elden [556K]

Answer:

x = 2/5

General Formulas and Concepts:

Order of Operations: BPEMDAS

Step-by-step explanation:

Step 1: Write equation

5x = 2

Step 2: Solve for x

Divide both sides by 5: x = 2/5

Step 3: Check

Plug in x to verify it's a solution.

Substitute: 5(2/5) = 2
Multiply: 10/5 = 2
Divide: 2 = 2

4 0

3 years ago

In GeoTown, there are 210 teenagers that own a tablet. This is at least 4/5 of all teenagers that live in GeoTown. What is the m

hoa [83]

252, 210 divided by 5 = 42, 42 x 5 = 210 + 42= 252

7 0

3 years ago

How to write 75 1/3 % as a fraction in simplest form

Snowcat [4.5K]

75 1/3 = 75.33

75.33% = 75.33/100
= 7533/10000

not sure if it can be simplified more than this

3 0

3 years ago

Read 2 more answers