Using the sum of interior angles formula;
(n-2)×180=sum
(n-2)×180=2880
n-2=2880/180
n-2=16
n=16+2
n=18
Therefore, this polygon would have 18 sides.
Hope I helped :)
Answer:
x = 99°
Step-by-step explanation:
first: find the supplement to 123°:
180 - 123 = 57°
second: since all triangle interior angles total a80°:
180 - 42 - 57 = 81°
third: x = the supplement to 81°, so, x = 180 - 81 = 99°
Answer:
24x4=k
Step-by-step explanation:
because if it says its 4 TIMES it is hinting that you have to multiply
Answer:
44.5
Step-by-step explanation:
area of rectangle : w*l=3*9=27
area trianle= (height*base)/2= (5*7)/2=35/2=17.5
27+17.5=44.5
Answer:
a=6, b=-12, and c=0
Step-by-step explanation:
The standard format for the quadratic formula is ax^2+bx+c (=0).
If we rearrange the numbers given to look like this formula, we will find the values of a, b, and c.
6x^2=12x We can move over the 12x to the other side.
6x^2-12x=0 There is no visible value of c, but since there is no term without a variable, c=0
6x^2-12x+0=0
So a=6, b=-12, and c=0
