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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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I need a better explanation how to find length and area of a triangle
fomenos

Answer:

Height(h) = 24in

Area = 204in²

Step-by-step explanation:

we would use the heron formula because we have all the sides to calulate the area

S  = (A+B+C)/2 = (25 + 17 + 26)/2 = 68/2 = 34

area = √s(s-a)(s-b)(s-c)  = √34(34-25)(34-17)(34-26) = √34(9)(17)(8) = √34x9x17x8 = √41616 = 204

area= (1/2)bh

    204 = (1/2)bh b= 17, h =?

204 = (1/2)17h

204 x 2 = 17h

408 = 17h

h = 408/17 = 24in

Height(h) = 24in

Area = 204in²

4 0
3 years ago
rail fares go up by 10%, and josie’s new season ticket to london costs £1342. calculate how much more she has to pay now than sh
Naya [18.7K]

Answer:

£134.2 more

Step-by-step explanation:

Divide 1342 by 100

Then you get 13.42

Times that by 10 and £134.2 is 10%

6 0
2 years ago
What if we draw three socks from the box instead. what is the probability that we draw a matching pair? (having all three socks
frutty [35]

There is a chance of 1/16*1/15 that she gets the specific socks pair according to laws of probability and the counting principle but thats not how it will work over here.

As we should be guaranteed that she gets the number of socks she obviously must take out around 9 socks as we are taking the worst case scenario where all the socks that come out are the different ones so the ninth sock must match any of the others.

But if we draw three socks obviously the probability is 1/16*1/15*13/14 as we dont want the third one to be same. We can multiply the answer by 3 as it can be in three different orders.

8 0
3 years ago
Kari bought 3 boxes of cookies to share with a book club. Each box contains 12 cookies. The expression StartFraction 36 over p E
sweet-ann [11.9K]

Answer:12 cookies

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
-3 + 4x = 41<br> What's x
marusya05 [52]
Move the -3 to the other side which makes it 41 + 3 = 44

So now the equation looks like 4x=44

Now divide 44 by 4, equals 11

x=11
3 0
3 years ago
Read 2 more answers
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