Answer:
Is the question even complete ?
Step-by-step explanation:
Answer:
8 minutes
Step-by-step explanation:
The amount in the glass after m minutes can be described by ...
a = 4 + 3/2m
We want to find m when a=16, so ...
16 = 4 + 3/2m
12 = 3/2m . . . . . subtract 4
8 = m . . . . . . . . . multiply by 2/3
It will take 8 minutes to fill the glass.
The circumference of every circle is (pi) times (diameter).
The diameter is (2 x radius), so we can write
Circumference = (pi) x (2 x radius) .
The question gives us the circumference, and the number to use for (pi).
I shall now pluggum in:
(31.4 cm) = (3.14) x (2 x radius)
Divide each side by 3.14: (31.4 cm)/(3.14) = 2 x radius
Divide each side by 2 : (31.4 cm) / (2 x 3.14) = radius
5 cm = radius
Answer:
D. 5/4
Step-by-step explanation:
A. 5.4 can't be 'cause the shade did not reach 5 on number line.
B. 5 - 4 = 1 can'e be 'cause it pass 1.
C. 4 / 5 = 0.8 can't be 'cause its less than the shade.
D. 5 / 4 = 1.25 correct
