Total number of balls = 12 + 7 = 19
p(first ball is a red) = 7/19
Answer: 7/19
Answer:
3:1
Step-by-step explanation:
24:8 can both be divided by 8, 24/8 = 3, 8/8 = 1, making the ratio
3:1 ,
hope i helped!
Answer:
more the z-score more will be the extreme. therefore tallest man has high extreme
Step-by-step explanation:
Formula for z-score: 
where
X is height of tallest man
μ mean height
σ is standard deviation
z score for tallest is
z-score = 
similarly for shortest man
z-score = 
more the z-score more will be the extreme. therefore tallest man has high extreme
Her method will produce a valid sample.
Her method will produce a random sample.
Her method will produce a representative sample.
Answer:
Point E
Step-by-step explanation:
Notice that point E is the only point where you can draw a straight line from E to A' to A, E to B' to B, etc. That is, the line doesn't have to turn or bend to reach these three points. This doesn't work with any other point, so you know E is the point of dilation.
You can more firmly determine this by looking at the ratios of the distances. Notice how E is the only point where the ratio from of E to A and E to A' is equal to the ratio from of E to B and E to B', and so on for each vertex of the quadrilateral.
