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Giving ad is congruent to bc and angle bcd is congruent to angle adc prove d e is going to ce

[10 points, algebra 2]according to my answer key the restrictions are -1 and 4. but why not positive 1?

Human body temperatures have a mean of 98.20° f and a standard deviation of 0.62°. sally's temperature can be described by z = 1.4. what is her temperature? round your answer to the nearest hundredth. 99.07°f 97.33°f 99.60°f 100.45°f