2 years ago

Solve each system by substitution method x+y=4 y=3x

Mathematics

1 answer:

valentina_108 [34]2 years ago

3 0

X+y=4 y=3x
x+3x=4
4x=4
divide both sides by 4
x=1

You might be interested in

D. 10 + 11k can someone plzz help meeee plzzzz

torisob [31]

Answer:

(A). $\frac{15}{2}$ + $\frac{33}{4}$ <em>k</em>

Step-by-step explanation:

$\frac{3}{4}$ × 2(2 + 4k + 3 + $\frac{3}{2}$ k ) = $\frac{3}{2}$ ( 5 + $\frac{11}{2}$ k ) = $\frac{15}{2}$ + $\frac{33}{4}$ k

8 0

2 years ago

The vertices of a triangle are P(4, 7), Q8, -1), and R(-9, 6). What are the vertices of the image reflected across the x-axis?

natita [175]

Answer:

D.)

Step-by-step explanation:

Reflecting an image/shape over the x axis is reflecting it over a horizontal line, so the x coordinates will stay the same and the y coordinates will be the opposite. Therefore, the answer is D. Hope this helps!

8 0

2 years ago

I really need help with this please help

elena55 [62]

It’s 222829299292929292 ☺️

7 0

2 years ago

What is the answer to -5(-x + 3)

Vlad1618 [11]

Answer:

the answer iissss.....5x-15

3 0

2 years ago

Read 2 more answers

4x - 3y = 12 without graph

Maru [420]

Answer:

Make it an y=mx+b equation. -3y=-4x+12

Divide everything by -3

Answer is y=4/3x-4

Step-by-step explanation:

3 0

3 years ago