kaseykrueger47
09.11.2020 •
Mathematics
Recall in the last lesson that Raj weighed 193.4 pounds after 0.5 weeks, and 187.6 pounds after 4 weeks. Find a linear model for Raj's weight, w, after t weeks. Round the slope and intercept to two decimal places if needed.
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Ответ:
Kim's age is twice of that of her sister. We'll let k2 = Kim and k = Kim's sister.
So, k2. When you add Kim's age to her sister age you get 36.
Because Kim is twice the age of her sister k2. And because it said 'add' then we put a + sign. k2 + s = 36. Now let's solve it.
k2 + k = 36 < Given
3k = 36 < Combine like terms
k = 12 < Divide both sides by 3
We know Kim's sister is 12 y/o but what about Kim herself? Earlier we assigned Kim to k2. Substitute 12 for k and you get 12(2) = 24
Kim's sister is 12 y/o and Kim is 24 y/o
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