3 years ago

-7y-4x=1 and 7y-2x=53 solve the system of equation

Mathematics

1 answer:

djverab [1.8K]3 years ago

3 0

The answer is x=-9 and y=5

You might be interested in

HELP PLEASE???!!!!!!!

Fiesta28 [93]

Answer:

Step-by-step explanation:

$\left\{\begin{array}{ccc}y=\dfrac{3}{4}x-12&(1)\\y=-4x-31&(2)\end{array}\right\\\\\text{Substitute (1) to (2):}\\\\\dfrac{3}{4}x-12=-4x-31\qquad\text{multiply both sides by 4}\\\\3x-48=-16x-124\qquad\text{add 48 to both sides}\\\\3x=-16x-76\qquad\text{add}\ 16x\ \text{to both sides}\\\\19x=-76\qquad\text{divide both sides by 19}\\\\x=-4\\\\\text{Put it to (2):}\\\\y=-4(-4)-31\\y=16-31\\y=-15$

7 0

4 years ago

what is the missing number? imput B;4,12,16,24,32,40. output A:8,16,20,_,_ rules a=b+4. SUPER URGENT !!!!!!!!!!

BigorU [14]

The given equations is: a=b+4
Given the following clues:
a=24+4 --- 28
a=32+4 --- 36
a= 40+4 --- 44

3 0

3 years ago

"Which choice shows the graph of y= 1/3x+4?

cestrela7 [59]

Answer:

Step-by-step explanation:

2 plus t

5 0

4 years ago

Read 2 more answers

A freight train starts from Los Angeles and heads for Chicago at 40 mph. Two hours later, a passenger train leaves the same stat

Degger [83]

I'm going to assume that they are on parallel tracks, and not the same track.

60x=40(x+2)

60x=40x+80

20x=80

x=4

You can check the work I've provided by filling in the answer for x into the initial question.

ʕ·ᴥ·ʔ

3 0

4 years ago

Help me solve the out and inputs of the table

velikii [3]

The in is -5 the out for 7 is -21 the out for -3 is 9the infor 15 is -5 the out for -10 is 30

5 0

3 years ago