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NemiM [27]
3 years ago
11

2x + y = 3 x - 2y = -1 If equation two is multiplied by -2 and then the equations are added, the result is what?

Mathematics
1 answer:
photoshop1234 [79]3 years ago
5 0

Answer:

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

2(3 x - 2y) = -6x + 4y

2x + y + -6x + 4y + -1 = -4x + 5y -1

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-2x + y=-5<br>+ -2x -y=-3​
vodomira [7]

Answer: Point-Form : (2,-1)

Equation Form : x=2, y=-1

Step-by-step explanation: Solve for the first variable in one of the equations, then substitute the result into the other equation.

Hope this helps you out! ☺

6 0
3 years ago
The cost of a service call to fix a washing machine can be expressed by the linear function y = 45 x + 35, where y represents th
katovenus [111]

Answer:

the slope represents the cost for each hour it takes to repair the machine.Step-by-step Answer:

We are given that  the cost of a service call to fix  a washing machine can be expressed by the linear function

Where

y=Total cost of  a service to fix  the machine.

x=Number of hours takes to fix the machine

We have to find that slope in this function what represents.

General equation of line is given by

Where m=Slope of line

c=y- intercept

Comparing the general equation with the given function

We get m=45,c=35

m=45 represents the cost for each hour it takes to repair the machine because when number of hours multiplied by 45 then we get total cost of x hours.

Hence, the slope represents the cost for each hour it takes to repair the machine.

8 0
3 years ago
Read 2 more answers
A number that has exactly two distinct factors is prime what is the inverse of the statement?
Anastasy [175]

Answer:

Composite number

Step-by-step explanation:

A number that has more than 2 distinct factors is a composite number

plzzzz mark this as brainliest... and I hope this helped :)

8 0
3 years ago
4. Which property of operations is used to write 15x + 9 as 9 + 15x?
suter [353]

Solution: The commutative property of addition states that when two numbers are being added, their order can be changed without affecting the sum.

8 0
2 years ago
I really need help I'm stuck on this question please help
vagabundo [1.1K]
Isnt it 15?? since theyre all suppose to be the samw
6 0
3 years ago
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