Answer/Step-by-step explanation:
Perimeter of the remaining sector = length of arc + 2×radius
= θ/360 × 2πr + 2r
θ = 360° - 120° = 240°
r = 21 cm
Plug in the values
Perimeter of the remaining sector = 240/360 × 2×π×21 + 2(21)
= 129.964594 ≈ 130 cm
Therefore, the perimeter of the remaining portion is 130 cm
Answer:
1:25
Step-by-step explanation:
if you divide 575 by 23 you get 25, therefore there are 25 students per 1 teacher
34 is the answer because 67-33=34
Equation: 19-2(3x-1)/5 = x + 2
Solution:
1. Find x
(5) - 2 = (x + 2) - 2
x = 3
2. Plug in X and solve
19-2(3(3)-1)/3
19-2(9-1)/3
19-2(8)/3
19-16/3
<u>3/3 = 1</u>
