An electronic store receives a shipment of 20 graphing calculators including 6 that are defective. four of the calculators are selected to be sent to a local high school. how many of these selections will contain no defective calculators

we know that

applying the law of sines

°

so

∠j=18°

∠k=29°

∠l=180-(18+29)=133°

the answer part a) is

the measure of angle k is  ≈29°

part b)  the measure of angle k could also be

(180-29)=151°

so

∠j=18°

∠k=151°

∠l=180-(18+151)=11°

the answer part b) is

the measure of angle k could also be 151°

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answer: 2x + 2 − 2 = 10 − 2; subtraction property of equality

step-by-step explanation: