3 years ago

Picture Included PLEASE help

1 answer:

6 0

Is there any other answers? To me, none of those look correct. If you had -3 and substituted it into the equation you would get -1(-3)+3, which would turn into 3+3 which equals 6.

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Don't have time for any bs please answer the question or don't do it at all

Serhud [2]

Answer:

1.) (11, -7/3), 2.) No solution. 3.) (1, 3)

Step-by-step explanation:

1.)

2x + 3y = 15

x - 3y = 18

Solve...use elimination method

2x + x + 3y - 3y = 15 + 18

3x = 33

x =11

11 - 3y = 18

-3y = 7

y = -7/3

(11, -7/3)

---------------------------------------

2.) y = 4x + 4

y = 4x - 4

Use substitution.

4x + 4 = 4x - 4

4 = -4 FALSE NO Solution

3.) y = 5- 2x

4x + 3y = 13

Can use elimination method

2y = 10 - 4x

add it to 4x + 3y = 13

10 + 3y = 2y + 13

y = 3

3 = 5 - 2x

x = 1

(1, 3)

5 0

3 years ago

Three prime numbers which add up to 25

dolphi86 [110]

Answer:

7 + 11 + 11

Step-by-step explanation:

7 + 11 = 18

18 + 7 = 25

8 0

3 years ago

-2a+7-3(-9-4a) how do I solve this?

Klio2033 [76]

Answer:

34+4a

Step-by-step explanation:

-2a+7-3(-9-4a)

➡ -2a+7+27+12a

➡34+10a

6 0

3 years ago

Can you please simplify -2x-8x

sergij07 [2.7K]

Answer:

- 10x

Step-by-step explanation:

Step 1:

-2x - 8x

Answer:

- 10x

Hope This Helps :)

4 0

3 years ago

A rope is at least 21 feet long. You want to cut it into 3 pieces. The second piece is to be twice as long as the first piece,an

Yuri [45]

Answer:

the first piece of rope would be 4 feet

Step-by-step explanation:

4 + 8 + 9 = 21

5 0

3 years ago