-3x-6y=11. 2x+y = 4 solving linear systems using multiplication and addition show your work

1 answer:

3 0

ExampleProblemUse elimination to solve the system. x – y = −6x + y = 8 Add the equations. 2x = 2x = 1Solve for x. x + y = 81 + y = 8y = 8 – 1y = 7Substitute x = 1 into one of the original equations and solve for y. x – y = −61 – 7 = −6−6 = −6 TRUEx + y = 81 + 7 = 88 = 8TRUEBe sure to check your answer in both equations!AnswerThe solution is (1, 7).

You might be interested in

Two towns that are 31.5 km apart are 3 cm apart on a map. what is the scale of the map?

VLD [36.1K]

Answer:

1 cm : 10.5 km

Step-by-step explanation:

We are given that two towns are 31.5 km in real and are 3 cm apart on a map and we are to find the scale of the map.

For this, we can use the ratio method.

$\frac { 3 cm } { 1 c m } = \frac { 3 1 . 5 k m } { x }$

$x = \frac { 3 1 . 5 \times 1 } { 3 }$

$x = 1 0 . 5$

Therefore, the scale of the map would be 1 cm : 10.5 km.

8 0

3 years ago

Read 2 more answers

The following triangle ABC is rotated clockwise about the origin the new coordinates are A'(1,-2) B'(4,6) and C'(-2,3). Which of

Yanka [14]

B.90 because 90 degrees is above the original angel

5 0

3 years ago

Read 2 more answers

Find the measure of <1 A.) 30 B.) 45 C.) 15 D.) 60

nataly862011 [7]

45 would most likely be right

5 0

2 years ago

Are all triangles similar

laila [671]

No. There are 3 types of triangles.

Scalene: Triangle which no sides are equal, so all angles aren't congruent

Isosceles: A triangle with 2 equals sides, but has 1 not equal sides.

Equilateral: A triangle which all sides are equal

6 0

2 years ago

Read 2 more answers

A jeweller paid $6800 for 165 bracelets bought in China .The customs Department in his country charged him $1360 in duty

vodomira [7]

You’re so smart, I love questions like this. Hopefully you can solve it so I can know too!

5 0

2 years ago