3 years ago

If x-2y=0 and 3x + y =7 what is the value of x

Mathematics

1 answer:

Agata [3.3K]3 years ago

6 0

Answer:

x=2

Step-by-step explanation:

If 3x + y = 7, then y= 7 - 3x.

Substitute in x - 2y = 0

So:

x - 2(7-3x)=0

x-14+6x=0

7x=14

x=2

You might be interested in

Help me with ixllll pleaseee

ELEN [110]

I think it is no , one looks skinner than the other

6 0

2 years ago

Read 2 more answers

Simplify the expression −3/5(−8 + 5/9x − 3)

rjkz [21]

8.6 - 1/3x + 1.8

hope this helps :)

6 0

2 years ago

Factor the following expression using the GCF.

Advocard [28]

Answer:

The greatest common factor is 4r so 4r(d-4)

3 0

3 years ago

Read 2 more answers

Solve the following quadratic equation:<br> the following quadratic equation: 2x2 - 52 + 2 = 0

irina [24]

Answer:

Step-by-step explanation:

$2x^2 - 52 + 2 = 0\\\\2x^2-50=0\\\\x^2-25=0\\\\x^2=25\\\\x=5\qquad\vee\quad\ x=-5$

6 0

3 years ago

There are eight 4th grade classes going on a field trip. There are 20 students in each class and 22 adults who plan to go. Each

Reika [66]

Answer:4

Step-by-step explanation:eight 4th grade x 20= 160 students

160 students + 22 adults=182 people

182 student/48=3.79(2 decimal places)

Rounded to a whole number=4 buses

3 0

3 years ago