Mathematics, 17.02.2022 16:10 gavergan
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The trees on two different plots of land are tested for disease. The results are shown in this table.
Enter numbers in the boxes so that the two-way table represents these results.
Plot A Plot B
Disease present
Disease not present
Tree Plot Disease present?
1 A Y
2 A N
3 B Y
4 B Y
5 B Y
6 A N
7 B N
Answers: 1
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Use the quadratic formula to solve 5x=6x^2-3,what are the values of x?
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What other information do you need to prove triangle dac=bca by asa
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Prove (a) cosh2(x) − sinh2(x) = 1 and (b) 1 − tanh 2(x) = sech 2(x). solution (a) cosh2(x) − sinh2(x) = ex + e−x 2 2 − 2 = e2x + 2 + e−2x 4 − = 4 = . (b) we start with the identity proved in part (a): cosh2(x) − sinh2(x) = 1. if we divide both sides by cosh2(x), we get 1 − sinh2(x) cosh2(x) = 1 or 1 − tanh 2(x) = .
Answers: 3
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