9 According to the Red Cross, about 42% of Americans have Type A blood. Suppose 80
people show up at a typical blood drive.
1
What's the standard deviation of the Type A proportions found at such drives (standard
error)?

whats the question?

step-by-step explanation:

a

step-by-step explanation:

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i need a picture

step-by-step explanation:

c. 27 units.

step-by-step explanation:

we are told that in circle a, ∠bae ≅ ∠dae.

we can see from our given diagram that in and ;

, as these are radii of our given circle.

therefore, by sas congruence postulate.

hence, side be will be equal to side de as corresponding parts of congruent triangles are congruent. so we can set an equation to find the value of x as:

now let us substitute x=17 in the expression for the length of be.

therefore, length of be will be 27 units and option c is the correct choice.