Answer:
r=3
Step-by-step explanation:
24π=2π(r^2+r)
Divide each side by 2 pi
24π/2π =2π/2π(r^2+r)
12 = r^2 +r
Subtract 12 from each side
12-12 = r^2 +r -12
0 = r^2 +r -12
Factor
What number multiply to -12 and add to 1
4*-3 = -12
4-3 = 1
0= (r+4) (r-3)
Using the zero product property
r+4 =0 r-3 =0
r+4-4 =0-4 r-3+3=0+3
r = -4 r = -3
Assuming r is the radius, r must be positive
r =3
6 3
1 4
Reciprocal
6 4
1 3
Multiply normally
6*4=24
1*3=3
24/3=8
I hope this helps;)
1. 7, you have to divide 10,885 by 1,555 and you get 7.
2. The equation that was given, 23+7 x 35 = 268
The way you get 268 is by multiplying first, so 7 x 35 = 245 then you have to add 23 to get 268.
I hope this helps you
