Amanufacturer of calculators buys integrated circuits from supplies a, b and c. fifty percents of the circuits come from a, 30% from b and 20% from c. one percent of the circuits supplied by a have been defective, 3% of bs have been defective and 4% of c has been defective in the past.

(a) suppose that a circuit is randomly selected. what is the probability that it is defective
(b) a circuit is selected at random and found to be defective. what is the probability it was manufactured by a?

0.022 and 0.2273

Step-by-step explanation:

Given that a manufacturer of calculators buys integrated circuits from supplies A,B and C.

SuppliesABCTotal

Circuits0.50.30.21

Defective0.010.030.04  

P(defective)  0.5*0.01+0.3*0.03+0.2*0.04  

 0.022  

So probability for defective = 0.022

b) Prob ( circuit selected is from A/circuit defective)

=

marco saved more.   he saved $35 more.

step-by-step explanation:

1+2+3+4+5+6+7+8+9+10 = 55

2*10 = 20

55-20 = 35

answer: the two figures are congruent.

step-by-step explanation: they're congruent because figure efgh is reflected across the x and y axis but it was also rotated.

hope it !