R=5
r(r-1)=30
r²+r=30
5²+5=30
5²=30-5
5²=25
5=5
Black box = r x 2
5 x 2 = 10
Black part of card is 10 sq cm.
Answer:
1 1/2
Step-by-step explanation:
12 divided by eight is 1.5, and 1.5 as a fraction is 1 1/2.
Answer:
Hello!The answer would be D-(x-8) and (x-3)
Step-by-step explanation:
Your welcome :)
Step-by-step explanation:
the sum of the angles = 360
8x+2 + 2x + 14 + 3x -4 +5x + 5 = 360
18x +17 = 360
18x = 343
x = 19.1
angles are:
154.8
52.2 smallest (2x + 14)
53.3
105.5