Answer:
C
Step-by-step explanation:
3x+4x-19+3x-1=180
10x=180+19
x = 199/10 = 19 (round to 20)
x = 20
<A= 20
<B= 80-19= 61
<C=. 59
The longest side is across from the largest angle. Draw the triangle ABC.
AC is across <C (the largest angle)
The answer is D, 30cm.
If you do 6+6+9+9 (to find the perimeter) you get your answer.
Hi!
The equation to find the area of a triangle is...
(a = area
b = base
h = height)

Fill in the values that we already have.
Divide both sides by 1/2
1722 = 82*h
Divide both sides by 82.1722/82 = 82/82*h
21 = h
The answer is B. 21 cmHope this helps! :)
Answer with Step-by-step explanation:
We are given that



Compare with slope-intercept form

Where m=Slope of line
b=y-intercept
a.We get slope=m=1
b.b=81
c) To find the x- intercept
Substitute y=0


x-intercept at x=-81