Answer:
x=3
Step-by-step explanation:
5(2x-3)=15
10x-15=15
10x=30
x=3
Answer:a is 5, b is 6, c is 8, d is 17 by comparison of the general equAtion. So plugging that into the formula that’s given we get (5-17)/(6+8)=-12/14=-6/7. By the way, I think there’s supposed to be “+d” instead of “d” and “+17” instead of 17.
Supplementary angles by definition means the sum is 180.
From that knowledge we can write up some equations.
Let angle 1 = x, and angle 2 = y
x + y = 180
"The larger of two supplementary angles measures 20° less than four times the measure of the smaller angle"
(Let x be the larger angle)
x+20 = 4y
Since there are two different equations, and two variables, this means we have a set of simultaneous equations.
We can solve this via the substitution method or the elimination method.
I choose to solve it via the substitution method cause of personal preference.
x + y = 180 => x = 180- y
x+20 = 4y => x = 4y - 20
Make them equal each other..
180 - y = 4y - 20
200 = 5y
40 = y
Now that we know y we can sub it into any equation to find x
x + 20 = 4y
x + 20 = 4(40)
x + 20 = 160
x = 140
So the angles are 40° and 140°
Step-by-step explanation:
<h2>A set which is not finite is called an infinite set. Example: A set of all whole numbers. A = {0,1,2,3,4,5,6,7,8,9……}</h2>
Answer:
c
Step-by-step explanation:
