All categories

3 years ago

3. 1x – 3y = 24 3x + 1y = 12 What’s the (0,0) and how did I get there

Mathematics

1 answer:

ioda3 years ago

5 0

Answer:

(6, -6)

Step-by-step explanation:

Let's do a process of elimination. Multiply the 2nd equation by 3 so system of equations will now look like this:

x - 3y = 24

9x + 3y = 36

Add these two together to get rid of the y terms and we get

10x = 60 or x = 6

Substitute this value of x into either equation and you will get

3(6) + y = 12 ---> y = -6

You might be interested in

2(x - 25) = 112<br> QUICK HELP

Sonja [21]

Answer:

Step-by-step explanation:

2(x - 25) = 112

x - 25 = 112/2

x - 25 = 56

x = 56 + 25

x = 81

6 0

3 years ago

Chloe George

Ronch [10]

Answer:

ABC = 27

DBC = 56

Step-by-step explanation:

ABC + CBD = ABD

x+10 + 4x-12 = 83

Combine like terms

5x -2 = 83

Add 2 to each side

5x-2+2 = 83+2

5x = 85

Divide each side by 5

5x/5 = 85/5

x =17

ABC = x+10 = 17+10 = 27

DBC = 4x-12 = 4*17 -12 = 68-12 = 56

8 0

4 years ago

Read 2 more answers

Solve the equation 7x equals 42

Vikentia [17]

7x = 42

First, do the inverse operation.

The inverse of multiplication is division.

7x/7 = 42/7
x= 42/7
x= 6

Final answer: x= 6

7 0

4 years ago

Read 2 more answers

If x=3 and y=1, then 3x2+2xy-5=?

miskamm [114]

Answer:

Step-by-step explanation:

4 0

3 years ago

Nick went canoeing on the river he traveled 1 mile in 17 minutes.at this rate,how far will he travel in an hour and 25 minutes

dem82 [27]

9514 1404 393

Answer:

5 miles

Step-by-step explanation:

An hour and 25 minutes is 85 minutes. Using the given information we can find the distance d with the proportion ...

$\dfrac{\text{distance}}{\text{time}}=\dfrac{d}{85\text{ min}}=\dfrac{1\text{ mi}}{17\text{ min}}\\\\d=\dfrac{85\text{ min}}{17\text{ min}}(1\text{ mi)}\qquad\text{multiply by $85$ min}\\\\d=5(1\text{ mi})\qquad\text{simplify}\\\\d=\boxed{5\text{ mi}}$

In 1 hour and 25 minutes, Nick will travel 5 miles.

6 0

3 years ago