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nexus9112 [7]
3 years ago
14

Write and describe the four steps for using the linear combination method to solve a system of equations, use complete sentences

. 1. Arrange. 2. multiply if needed. 3. Add or subtract and solve. 4. Find the other variable. ALWAYS CHECK Solve this system using the linear combination method. Show your work and explain each step. 2x + y = 8 x − y = 4
Mathematics
1 answer:
vodomira [7]3 years ago
7 0

Answer:

Step-by-step explanation:

2x+y=8x-y=4

First solve take all x variable to one side and all the y on one

y+y=8x-2x=4

2y=6x=4

Solve for x solve for y

6x=4 2y=4

x=4÷6 y=2

x=4/6

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The distance between the parallel lines x – 2y = 3 and 2x – 4y = 12 is
Svetradugi [14.3K]

Given :

Parallel lines are

x – 2y = 3 and 2x – 4y = 12

Step-by-step explanation:

Lets write the given lines in slope intercept form y=mx+b

x -2y = 3  \\-2y=-x+3\\Divide \; both \; sides \; by -2\\y=\frac{x}{2} -\frac{3}{2}

From the above equation , y intercept of first line is \frac{-3}{2}

Solve the second equation for y and find out y intercept

2x-4y=12\\-4y=-2x+12\\Divide \; by \; -4\\y=\frac{1}{2} x-3

y intercept of second line is -3

To find the distance between parallel lines, we subtract the y intercepts

\frac{-3}{2} -(-3)=\frac{-3}{2} +\frac{6}{2} =\frac{3}{2} =1.5

Answer:

The distance between the parallel lines = 1.5

Reference:

brainly.com/question/24145911

7 0
4 years ago
Read 2 more answers
How can u explain 3.6 times 2.05 equals 7.38
slava [35]

Answer:

Answer below

Step-by-step explanation:

First you line up the digits

3.60

*

2.05

then you do regular multiplication

7 0
3 years ago
Casi drove 135 miles in 3 hours. Use a proportion to find how long it would take her to drive 360 miles at the same speed.
galina1969 [7]

Answer:

8 hours

Step-by-step explanation:

We are given that

Casi traveled distance in 3 hours=135 miles

We have to find the time taken by Casi to drive 360 miles at the same speed using proportion .

Let time taken by Casi to drive 360 miles=x

We know that

Speed=\frac{Distance}{time}

Using proportion

\frac{a}{b}=\frac{c}{d}

\frac{135}{3}=\frac{36}{x}

x=\frac{360\times 3}{135}

x=8

Hence, the time taken by Casi to drive 360 miles=8 hours

8 0
3 years ago
Ms. Dyna a mathematics teacher has a salary of 120 000$ per month, if salary increases by 9% calculate the amount of extra she r
Studentka2010 [4]

Answer:

129,000

Step-by-step explanation:

8 0
4 years ago
Can someone help me with this ASAP!
asambeis [7]

The following correct answer is c.

This I because when you translate using this, you first start with the point (0,0), translate that point down 3 (-3 means down three when outside parenthesis) and translate it to the right 4 units (this shown in a paraptosis, and when you move to the right you say -4, but if you move to the left you say +4)

4 0
3 years ago
Read 2 more answers
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