steves9994
25.07.2019 •
Mathematics
1. kim is x years old. jordan is 7 years older than kim. four times jordan’s age is equal to 200. (a) write an equation that could be used to find jordan’s age. use j to stand for jordan’s age. (b) write an equation that could be used to find kim’s age. use k to stand for kim’s age. (c) how old is jordan? give your answer in the form of a sentence. (d) how old is kim? give your answer in the form of a sentence.
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Ответ:
(B) 4J-7=K
(C/D) 4(K+7) = 200
4K = 172
K = 43
J = 50
Ответ:
Radius = Half the diameter
38 / 2 = 19
A = 3.14 * 19^2
A = 3.14 * 361
A = 1133.54