ebonsell4910

30.11.2020 • 

Mathematics

A stem and leaf plot. The stems are 0, 2, 9, 20. The first column of leaves are 5, 3, 1, 8. The second column of leaves are blank, 6, 4, blank. The third column of leaves are blank, blank, 5, blank. Key: 20 line 8 = 208. Which data set is shown by the stem and leaf plot? 5, 3, 6, 1, 4, 5, 8 5, 23, 26, 91, 94, 95, 208 500, 236, 9145, 208 500, 302, 602, 109, 409, 509, 820

Ответ:

terrasami2330

22.09.2020

Mathematics

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m∠C = 68.3 ⇒ answer (a)

Step-by-step explanation:

In ΔABC:

∵ CB = 57 and BA = 86

∵ m∠A = 38°

By using the sin Rule:

AB/sinC = BC/sinA

∵ AB = 86 , BC = 57 and m∠A = 38°

∴ 86/sinC = 57/sin38

∴ sinC = (86 × sin38)/57 = 0.9288928

∴ m∠C = 68.3 ⇒ answer (a)

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