Please help!!! picture shown
1 answer:
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Answer:
D.]
Step-by-step explanation:
We will find the standard deviation and variance:
Variance= E-[
E[x] = 3.462
E[{x}^2]= 31.86
Var(x)= 31.86-(3.462)^2 = 28.4
Standard deviation =
=
= 5.833 = 6(aproximately)
Therefore, the chances of winning are equal in each lane.
If two fractions have the same numerator, the fraction with the smaller denominator is bigger.
3/8 is bigger.
Answer:
(B)
Step-by-step explanation:
Let us denote rectangular tiles by R and square tile by S, then
According to figure.
3 rectangular tiles +2 square tiles +2 square tiles =2 rectangular tiles +4 square tiles +1 rectangular tiles +4 square tiles
∴3R+2S+2R=2R+4S+R+4S
⇒5R+2S=3R+8S
⇒5R-3R=8S-2S
⇒2R=6S
⇒R=3S
Hence, 0ne rectangle =3 square
