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
Dominik [7]
2 years ago
11

4x + 2y = -12 3x + y = -10 please help system by substitution.

Mathematics
1 answer:
padilas [110]2 years ago
3 0

Answer:

(-4, 2)

Step-by-step explanation:

4x+2y=-12

3x+y=-10

Start by dividing the first equation by 2 to simplify it...

2x+y=-6

Then, subtract -2x from both sides to isolate y...

y=-2x-6

Substitute -2x-6 for y in the second equation...

3x-2x-6=-10

Combine like terms...

x-6=-10

Add 6 to both sides

x-6+6=-10+6

x=-4

Plug -4 in for x to solve for y:

3(-4)+y=-10

-12+y=-10

Add 12 to both sides

-12+12+y=-10+12

y=2

(x,y)=(-4,2)

You might be interested in
Cheryl thinks that the
liubo4ka [24]

Answer:

yes she is right

Step-by-step explanation:3x + 3 is the same as 3 + 3x.  

the zero adds nothing to the 3x term. So this means that 3x +3 and 3 + 3 are the same.

i hope this helps you.

3 0
3 years ago
Write an equation of the line that passes through (1,2) and is parallel to the line y = -5x +4
STatiana [176]

Answer:

y=-5x+7

Step-by-step explanation:

Prallel lines have the same slope

so the slope of  the unknown line is -5

and passes through(1,2)

y-2=-5(x-1)

slope-intercept form:y=-5x+7

6 0
3 years ago
At a country concert, the ratio of number of boys to the number of girls is 2:7. If there are 250 more girls than boys, how many
Juliette [100K]

Answer:

100 boys at the concert

Step-by-step explanation:

When changing the ratio between the number of boys to the number of girls, it always has to be equivalent to the original ratio 2:7

So, convert the ratio 2:7 to a different ratio, but it still has to be equivalent to the ratio 2:7. By doing that, multiply both sides of the 2:7 ratio by 50:

  2   :   7

×50   ×50

To get:

100:350  ⇒  This ratio means that the ratio between the number of boys to the number of girls is now 100:350, but that’s okay to have because it’s still equivalent to the original 2:7 ratio.

So, using the new ratio 100:350, this means that there are 100 boys at the concert and 350 girls at the concert, and 350 is 250 more than 100 which proves what the question is asking. So there are 100 boys at the concert.

<u>Answer:</u> 100 boys at the concert

<em>I hope you understand and that this helps with your question! </em>:)

7 0
2 years ago
Lebron keeps track of his life relative to the year he was born . Relative to when he was born ,his brother was born in year -3
elena-s [515]

Answer:

A, because -3 is a negative integer it is to the left of zero, 7 is a positive integer is it to the right of zero.

Hope this helps <3

5 0
3 years ago
Quiz
alisha [4.7K]

Answer:

the first one

Step-by-step explanation:

(-5+5) will equal 0. Because of the zero property no matter what you multiply it by it will equal 0. Same thing with (9-9)

7 0
3 years ago
Other questions:
  • Y - 3 = 4(x + 12) slope and y intercept
    6·1 answer
  • Mai has a bookcase with 6 shelves. There are c books on each shelf. Using c, write an expression for the total number of books.
    8·2 answers
  • griffin ordered a pair of sneakers online. he had 16 credit that he applied toward the purchase, and then he used a credit card
    9·1 answer
  • Round 14.5 to a whole number
    11·1 answer
  • Click an item in the list or group of pictures at the bottom of the problem and, holding the button down, drag it into the corre
    7·2 answers
  • What is the answer to 20x+7=4+6?
    13·2 answers
  • Anyone know this at all?
    14·1 answer
  • 8 gallons of soil are needed to fill 6 large plant pots. How many gollons are needed to fill 8 pots? Give your answer as a mixed
    14·1 answer
  • What is 17/21 - 2/10 = ___ - ___ = ____
    14·1 answer
  • Answer ASAP pls pls
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!