1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
DedPeter [7]
3 years ago
5

Solve the system using elimination. 2x + 3y = -2 3х – 6у = 18

Mathematics
2 answers:
Mashutka [201]3 years ago
7 0

Answer:

x = 2 and y = -2

Step-by-step explanation:

We must first eliminate the y-variable:

2x + 3y = -2

3x - 6y = 18

4x + 6y = -4

3x - 6y = 18

_________

7x = 14

x = 2

Since we know x=2, we plug that back into one of the original equations to find y:

2x + 3y = -2

2(2) + 3y = -2

4 + 3y = -2

3y = -6

y = -2

Therefore, x = 2 and y = -2

Anna35 [415]3 years ago
4 0

Step-by-step explanation:

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

3x - 6y = 18......... 2

Multiply both Sides of equation 1 by 2

4x + 6y = -4

3x - 6y = 18

(add Like terms)

7x = 14 (devide both Sides by 7)

.°. x = 2

Substitude x = 2 into equation 1

.°. 2(2) + 3y = -2 (multiple the digit)

4 + 3y = -2 (Move 4 to the right and change it's sign)

3y = -6 (devide both side by 3)

y = -2

Final answers x = 2 ; y = -2

{2 ; -2}

You might be interested in
Anyone know how to do this
frez [133]

Answer:

77

Step-by-step explanation:

3+2*49-24

3+98-24

101-24

77

Good luck

7 0
3 years ago
Read 2 more answers
In an isosceles triangle the congruent sides each measure 25 yards and the base measures 30 yards what is the height of the tria
andrew11 [14]

Answer:

20 yards

Step-by-step explanation:

Since it is an isosceles triangle, a perpendicular from it's peak to the base bisects the base.

30/2=15

So using the Pythagorean theorem, hypotenuse^2=base^2+height^2

25^2=15^2+H^2

625=225+H^2

H^2=400

height=20 yards

7 0
3 years ago
31<br> ?<br> 40<br> Find the measure of the indicated angle to the nearest whole degree.
Len [333]

Answer:

51°

Step-by-step explanation:

Reference angle (θ) = ?

Opposite side length = 31

Hypotenuse length = 40

Apply SOH, which is;

Sin θ = Opp/Hyp

Plug in the values

Sin θ = 31/40

θ = sin^{-1}(31/40)

θ = 51° (neatest whole degree)

5 0
3 years ago
Can I get the answers for number 14 plz?
nataly862011 [7]
A.
-1: 
2(2)^{-1}  \\ 2( \frac{1}{2}) \\  \frac{2}{2}  \\ 1
(-1,1)

0:
2(2)^{0} \\ 2(1) \\ 2
(0, 2)

1:
2(2)^{1}  \\ 2(2) \\ 4
(1, 4)

2:
2(2)^{2} \\ 2(4) \\ 8
(2, 8)

3:
2(2) ^{3}  \\ 2(8) \\ 16
(3,16)

b.
To graph the equation, simply go through the points (-2, 0.5), (-1, 1), (0,2), (1,4), (2,8), and (3,16). Make sure you never go below 0 on the x-axis, because there's an asymptote there.

Hope this helps!
8 0
3 years ago
Read 2 more answers
A patio door is 72 inches wide. If a drawing of the door is made with a scale of 2 in. = 3 ft, what is the width of the door on
Anon25 [30]
The answer is A. 4 inches! This is because 72 inches = 6 ft. 6 feet on the drawing would be 4 inches. I hope this helps!

6 0
3 years ago
Read 2 more answers
Other questions:
  • PLEASE HELPPP!! Triangle HJK and triangle PMK are similar right triangles.
    11·2 answers
  • in the state of manie,the ratio of moose to people is 5 to 2.If a certain county in Maine has a population of 1,120 people, how
    7·1 answer
  • The answers to the problems
    12·1 answer
  • Is TVS scalene, isosceles, or equilateral? The vertices are T(1,1), V(9,2), and S(5,8).
    9·2 answers
  • Tyler wants to buy a jump rope that cost $5, a board game that cost $12, and a playground ball that cost $9. Ha has saved $8 fro
    13·2 answers
  • Solve. 9 ^x-3=729 what is X
    9·1 answer
  • What is the value of x when (x+15)×1/3 =2x-1
    11·1 answer
  • PLZ HELP BIG POINTS&gt;BRAINLIEST WILL BE AWARDED
    5·2 answers
  • Bonus Problem. A shop owner has 75 pounds of coffee that costs $4.50 per pound. How much coffee that costs $3.50 per pound shoul
    6·2 answers
  • Slope of 4/5 on line graph
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!