What is the solution to this system of equations? 5X + 2y =29 X + 4y=13
2 answers:
5x+2y=29
x+4y=13
eliminate y's
multiply top equation by -2 and add to first
-10x-4y=-58
<u>x+4y=13 +</u>
-9x+0y=-45
-9x=-45
divide both sides by -9
x=5
sub baack
x+4y=13
5+4y=13
minus 5 both sides
4y=8
divide both sidse by 4
y=2
x=5
y=2
(x,y)
(5,2)
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45 degrees.
To find the central angle or angle of rotation divide 360 (degrees in a circle) by the number of sides (octogon=8) 360/8=45
Answer:
I would go with options A. and D.
Answer:
A
Step-by-step explanation:
to get the answer, multiply every number in the brackets by 5.
2x + y = 3.....multiply by 2
x - 2y = -1
-----------------
4x + 2y = 6 (result of multiplying by 2)
x - 2y = -1
----------------add
5x = 5 <===
The sulutions are infinite
