2.) The numbers 405 and 1960, written as the products of their prime factors, are 405 = 34 x 5 and 1960 = 23 x 5 x 79. Hence, find
(1) the greatest whole number which is a factor of both 405 and 1960,
() the smallest whole number that is divisible by both 405 and 1960.

Pls explain, tomorrow is my test I really need ur help

If lmn=xyz, which congruences are true by cpctc? check all that apply

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Atechnician compares repair costs for two types of microwave ovens (type i and type ii). he believes that the repair cost for type i ovens is greater than the repair cost for type ii ovens. a sample of 6767 type i ovens has a mean repair cost of $79.79$⁢79.79. the population standard deviation for the repair of type i ovens is known to be $19.18$⁢19.18. a sample of 5555 type ii ovens has a mean repair cost of $75.24$⁢75.24. the population standard deviation for the repair of type ii ovens is known to be $21.40$⁢21.40. conduct a hypothesis test of the technician's claim at the 0.050.05 level of significance. let μ1μ1 be the true mean repair cost for type i ovens and μ2μ2 be the true mean repair cost for type ii ovens. step 2 of 4 : compute the value of the test statistic. round your answer to two decimal places.