Answer:
x=5.5
Step-by-step explanation:
Perimeter of ABCD=85
The perimeter is everything around the outside added together.
Form an equation:
3x+4+4x+6x-11+5x-7=85
Collect the like terms:
Like terms are terms that have the same powers and coefficient.
3x+4x+6x+5x=18x
4-11-7= -14
Put it back into an equation:
18x-14=85
Do inverse operations to find out what x is:
85+14=99
18x=99
99÷18=5.5 (we divide because, in algebra, when a number is next to a letter, it means times and as we want the inverse, you would have to divide)
x=5.5
Hope this helps :)
Answer:
Step-by-step explanation:
January 15, 2012 4:31PM
I assume you want the area of the sector with angle 120o and radius 9 cm:
120o is 120/360 = 1/3 of a full circle.⇒ area of sector is 1/3 area of full circle
⇒ area_of_sector = 1/3 x π x radius2 = 1/3 x π x (9 cm)2
= 27π cm2
≈ 84.82 cm2
Answer:
2.5
Step-by-step explanation:
Answer:
vertex is 2 and -4
Step-by-step explanation:
Answer:
it can't be porportinal because there is no values given!!!!
Step-by-step explanation:
