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Lana71 [14]
3 years ago
8

If the check after the substitution of the answer doesn't work, does that mean that the result is incorrect for equation with va

riables on both sides
Mathematics
1 answer:
Alecsey [184]3 years ago
8 0
I don't understand what your point is. Mind posting a picture or something?
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PLEASE HELP!! its due in 20 minutes and i dont get this
Goryan [66]

Answer:

Please see below :)

Step-by-step explanation:

The slope is just what's in front of the x!

So:

1.) slope = -1/4

2.) slope = undefined

3.) slope = -9

4.) slope = 9/2

Hope this helps!

7 0
2 years ago
Read 2 more answers
The ratio of the dide lengths of a triangle is 2 : 4 and the perimeter is 55 cm what is the length of the shortest side
photoshop1234 [79]
10cm is the length of the shortest side
7 0
3 years ago
Need help fast Yesterday's afternoon temperature was 21°F. It plunged overnight to -3°F. How many degrees did the temperature dr
Nezavi [6.7K]

The Answer to all the questions are D C D D B

6 0
3 years ago
There are 3 people at a party. If each person must shake hands with every other person at the party exactly once, how many hands
Dima020 [189]
<h2>Answer:</h2>

The total number of handshakes that would happen between the three people are:

                                    3

<h2>Step-by-step explanation:</h2>

There are three people at a party.

Let they be denoted by A,B and C.

Now, the total number of handshakes that would occur will be denoted by:

      AB, AC and BC

where AB denotes that A and B shake hands.

AC denote that A and C shake hands.

and BC denote that B and C shake hands.

Hence, total number of handshakes are:

                           3

5 0
2 years ago
I really need help with this problem steps
melamori03 [73]
Solve for y by setting one equation =to X after that you can substitute the equation into the other one let's set the first one in X= FORM
X-7y=10
-2x+14y=-20

Add 7y to both sides of the first equation to let x stand alone
X=7y+10
Now you can substitute x on the second equation
-2 (7y+10)+14y=-20
Distribute
-14y-20+14y=-20
Add and simplify
Us cancel out =0
-20=-20
0=0
They are the same equations you can also divide the second equation by -2 which would make it look like this
X-7y=10
-2 (x-7y=10)
Let me know if I have answered your question
5 0
3 years ago
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