We can draw an ellipse using a piece of cardboard, two thumbtacks, a pencil and string. Place the thumbtacks in the cardboard to form the foci of the ellipse Cut a piece of string longer than the distance between the two thumbtacks
(the length of the string represents the constant in the definition). Tack each end of the string to the cardboard, and
trace a curve with a pencil held taut against the string. The result is an ellipse.
1) Show that d1+d2=2a. Send
pictures for this question.
(use a ruler after drawing your
ellipse)
*
Foci

answer: it's upside down and i can't read it

step-by-step explanation:

85.560%

step-by-step explanation:

conditional probability is defined as:

p(a|b) = p(a∩b) / p(b)

in other words, the probability that a occurs, given that b has occurred = the probability that both a and b occur / the probability that b occurs.

in this example:

p(turns 64 | turns 44) = p(turns 64 & turns 44) / p(turns 44).

if someone turns 64, they must have already turned 44, so:

p(turns 64 | turns 44) = p(turns 64) / p(turns 44)

on page 42, we see that of the original 100,000, 94944 turn 44, and 81234 turn 64.   therefore:

p(turns 64 | turns 44) = 81234 / 94944

p(turns 64 | turns 44) = 0.85560

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step-by-step explanation:

he kicked it up? is this the answer ?

step-by-step explanation: