The Minimum sample size table is attached below
Answer:

Step-by-step explanation:
From the question we are told that:
Confidence Interval 
Variance 
Generally going through the table the
Minimum sample size is

Answer:
It's 3 x 7 pond or a 7 x 3 pond
Step-by-step explanation:
Let the rectangular pond have dimensions l x b.
ATQ, l*b=21 and 2(l+b)=20. Solving it, we get l=3 or 7 and b=7 or 3.
y=3x
Step-by-step explanation:
y=3x-5
but
m=x+5/3
replace m in 3m to 3(x +5/3)
i.e
y=3(x+5/3)-5
y=3x +5-5
y=3x
Answer:
Ryan in 1 hour can code 4/5 of his game
Step-by-step explanation:
we know that
In 3/4 of an hour Ryan codes 3/5 of his game
so
using proportion
Find out how much of the game can he code in 1 hour
Let
x ----> fraction of the game that Ryan can code in 1 hour

Simplify

therefore
Ryan in 1 hour can code 4/5 of his game
How easy! Just list all the factors that add up to ten.
10 + 0
9 + 1
8 + 2
7 + 3
6 + 4
5 + 5
Which ones match the requirements?