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S_A_V [24]
2 years ago
8

Solve 3x-18=2y and 5x-6y=14 by elimination or substitution . SHOW ALL WORK!!!

Mathematics
1 answer:
Nataly_w [17]2 years ago
5 0

Answer:

3x - 18 = 2y

5x - 6y = 14

5x - 3*(2y) = 14

5x - 3*(3x - 18) = 14

5x - 9x + 54 = 14

-4x = -40

x = 10

3*10 - 18 = 2y

30 - 18 = 2y

12 = 2y

y = 6



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Which statement about the value of x is true?
mylen [45]
X can always be used a 1 .
4 0
3 years ago
How many solutions does this problem have <br> Y=-2x -4<br> Y= 3x plus 3
S_A_V [24]

Answer:

There is one possible solution

Step-by-step explanation:

Here, we want to get the number of solutions

We can proceed to solve the equation

we have two y values so we can directly equate the x parts

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3x + 2x = -3-4

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To get y, we substitute

We can only get one value of y too

So we have a point (x,y) as the solution to the system of equations

7 0
2 years ago
LCM of 4/6 and 4/8????
Svet_ta [14]

Answer:

24 is the LCM of 4,6,8. I think thats what your looking for.

Hope this helps!

Step-by-step explanation:

5 0
2 years ago
If D is the midpoint of the segment AC and C is the midpoint of segment DB , what is the length of the segment AB , if AC = 3 cm
Juliette [100K]
<span>A midpoint divides a line or a segment into two equal parts. If D is the midpoint of the segment AC and C is the midpoint of segment DB, what is the length of the segment AB, if AC = 3 cm.</span>

 

If D is the midpoint of AC, then AD=DC

If C is the midpoint of DB, then DC=CB

If AC=3cm. then then DC-3/2=1.5

If DC=1.5 then CB is 1.5 also

AB=AC+CB

AB=3+1.5

AB=4.5

5 0
3 years ago
What are the coefficients of the like terms in this expression? 18x - 9xy + 12x
likoan [24]
Steps to my answer:

18x-9xy+12x

Add similar elements together,  your answer comes out to be:
=30x-9xy
I hope this is what you were looking for! :) 
6 0
3 years ago
Read 2 more answers
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