I would say A.
B would be Carly's age is two years more than three times his sister's age.
C would be Carly's age is two times his sister's age plus three
D would be Carly's age is his sister's age squared plus three.
Let's use a formula in order to find how much the interior angles are supposed to add up to.
(n-2)×180; n is the number of angles.
(5-2)×180= 3×180=540
We need for the interior angles to add up to 540. Let's make an equation.
100+102+108+121+x=540
431+x=540; let's find x.
540-431= 109
So, X= 109°
Answer:
13x -42 124/x+3
Step-by-step explanation:
Answer:
$16.50
Step-by-step explanation:
Area of triangle=1/2bh
Area=248ft
Base=x
Height=2x-1
248=1/2×x×(2x-1)........
