Answer:
310 miles
Step-by-step explanation:
She drove 45 miles less the first day so simply subtract 45 from the amount of miles she drove on day two (355).
X=(355-45)
Answer:
The mean of X is 2
Step-by-step explanation:
Given the data in the question;
set of 10 cards consist of 5 red card and 5 blacks
cards are chosen, replaced and shuffled four times;
number of independent trials n = 4
now, since its is replaced, the probability of getting a red card in each trial will be;
p = 5/10 = 0.5
let X rep the number of red cards observed in the four trials.
the random variable follows binomial distribution where
n = 4 and p = 0.5
so
E(X) = ∑xP( X = x )
E(X) = np
we substitute
E(X) = 4 × 0.5
E(X) = 2
Therefore, The mean of X is 2
0.81 is 81/100 as a fraction.
Answer:
-25
Step-by-step explanation:
formula for areas of rectangles= width x height
width=x-5
height=x+5
(x-5)(x+5)= -5x+5x-25
since the 5x's cancel out each other
=-25 will be the answer
The answer to your question is 18% of 100 = 18
