Answer:
60
Step-by-step explanation:
0.25
2×5
10
0.25×10
=2.5
;4×6
=24
:2.5×24
=60
Place value of 4 is 4/100
Answer:
Option B. 
Step-by-step explanation:
step 1
Find the central angle of the shaded sector
Remember that the diameter divide the circle into two equal parts ( 180 degrees each part)
so
Let
x -----> the measure of the central angle of the shaded sector
∠x+72°=180°
∠x=180°-72°=108°
step 2
Find the area of the circle
The area of the circle is

we have

assume

substitute


step 3
Find the area of the shaded sector
Remember that the area of the complete circle subtends a central angle of 360 degrees
so
by proportion find the area of a sector by a central angle of 108 degrees

A) 500(.12)= 60 ants per week. Therefore, (10 weeks)(60 ants) = 600ants + 500 ants = 1,100 ants
B) (20 weeks)(60 ants)= 1,200 ants + 500 ants = 1,700 ants
Answer:
5.96
Step-by-step explanation: