30 × 5 = 150
150 - 110 = 40
40 ÷ 2 = 20
So 20 kids brought their own lunch
Hope this helped. Have a great day!
Answer:
see explanation
Step-by-step explanation:
The length of the arc is calculated as
AB = circumference of circle × fraction of circle
(11)
AB = 2πr × 
= 2π × 7 × 
= 14π × 
= 
π in
(12)
AB = 2πr × 
( r = 20 ÷ 2 = 10 )
= 2π × 10 × 
= 20π ×
= 
π
= 
π cm
The decimal for 8/18 is 0.44, you simplify 8/18 to 4/9, divide 4 by 9 for the decimal.
Answer:
9:16
Step-by-step explanation:
The ratio of sides of the lengths of rectangles is 3:4.
- Now since the scale is constant. So the scale ratio of area will be square of the side ratio .
<u>T</u><u>hat </u><u>is </u><u>:</u><u>-</u><u> </u>
→ Ratio of Area = ( 3 : 4)²
→ Ratio of Area = (3/4)²
→ Ratio of Area = 9/16
→ Ratio of Area = 9:16
<h3>
Hence the ratio of areas is 9:16 .</h3>
A = 4 km/jam
r = 1/2
jarak terjauh
s = a/(1 - r)
s = 4/(1 - 1/2)
<span>s = 8 km</span>
