The correct answer is 3n-1
Subtract 2(first equation) from the second, and 3(first equation) from the third to eliminate <em>x</em> :
(2<em>x</em> + 3<em>y</em> + <em>z</em>) - 2(<em>x</em> + <em>y</em> + <em>z</em>) = 16 - 2*9
<em>y</em> - <em>z</em> = -2
(3<em>x</em> - 4<em>y</em> + 2<em>z</em>) - 3(<em>x</em> + <em>y</em> + <em>z</em>) = 1 - 3*9
-7<em>y</em> - <em>z</em> = -26
Now subtract either equation with <em>y</em> and <em>z</em> from the other to eliminate <em>z</em>. If we take the first from the second, we get
(-7<em>y</em> - <em>z</em>) - (<em>y</em> - <em>z</em>) = -26 - (-2)
-8<em>y</em> = -24
<em>y</em> = 3
Then
<em>y</em> - <em>z</em> = 3 - <em>z</em> = -2
<em>z</em> = 5
And lastly,
<em>x</em> + <em>y</em> + <em>z</em> = <em>x</em> + 3 + 5 = 9
<em>x</em> = 1
Answer:
x = 17
Step-by-step explanation:
These are same side interior so they equal different measures. You would write the equation like this.
8x - 9 + 53 = 180 (collect like terms)
8x + 44 = 180 (minus 44 on both sides)
8x = 136 (divide by 8 on both sides)
x = 17
Hope this helps!!
Answer:
Let Greg's height be = x
According to the question;
So, Greg's height (x) = 15 years
Answer:
Use a compass to draw two equal arcs ...
Step-by-step explanation:
The attached diagram shows the construction of an angle bisector. First you draw arc DE, then arcs from D and E with the same radius that cross at F.
So, the step on your list is, "use a compass to draw two equal arcs from the intersection points of a previous arc and the legs."