2 × 6 = 12
12 ÷ 2 = 6
2 × 14 = 28
10 × 20 = 200
6 + 28 + 200 = 234
Right ΔABC has legs of lengths 4 ft and 7 ft. What is the length of the triangle’s hypotenuse?
1 answer:
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Let x be the number of weeks; therefore, the two linear equations are
Where T stands for the punches on the tea punch card and C for the punches on the coffee punch card.
Solving by substitution. Set T=C, then
Thus, substitute the value of x=3 into the first equation,
Thus, after 3 weeks, Josiah will have the same number of punches on each card, and he will have 23 punches on each card.