2 years ago

-2x + 3y = 18. x = -y + 1

Mathematics

1 answer:

Bezzdna [24]2 years ago

8 0

Answer:

D. X=-3, y=4

Step-by-step explanation:

-2x+3y=18 equation 1

x=-y+1 equation 2

-2(-y+1)+3y=18 replace x value of equation 2 into equation 1

2y-2+3y=18

5y=20

y=4

solve for x by replacing y value into either equation.

x=-y+1

x=-4+1

x=-3

You might be interested in

a student spent 15 minutes painting a 2 foot by 3 foot bulletin board. to the nearest tenth of a minute, how long did it take th

Katyanochek1 [597]

Area of the board divided by the time

2 x 3 = 6ft^2

15/6= 2.5mins

8 0

2 years ago

1) Find the slope and the y-byintercept of the line that passes through the points (1,5) and (3,9)

dimulka [17.4K]

Answer: slope= 2, y-intercept= 3

4 0

2 years ago

Need help asap thank you

Angelina_Jolie [31]

Answer:

D is 107 and E is 38

Step-by-step explanation:

20x+40=180

20x=140

X=140/20

x=7

M<A=5(7)+3

m<a=m<e

15(7)+2

107

m<b=m<d

5 0

2 years ago

Mr. Walter recorded the heights of the students in his class. The dot plot below shows the recorded data.

iren2701 [21]

Answer:

It's mean (I checked this) :)

Step-by-step explanation:

6 0

1 year ago

Can you please help me?

garri49 [273]

Answer:

6.2

Step-by-step explanation:

$\frac{10.3}{sin(90)} = \frac{x}{sin(37)}$ *Cross multiply*

10.3(sin(37)) = x(sin(90)) *Divide by sin(90) to isolate x*

$x = \frac{10.3(sin(37))}{sin(90)}$ *Solve*

x = 6.19 ≈ 6.2

4 0

2 years ago