Mathematics, 30.06.2019 09:30 cannonkd
Amath class has three girls and 7 boys in the 7th grade and five girls and five boys in the 8th grade the teacher randomly selects a 7th grader and an 8th grader from the class 4a competition what is the probability that the students she select are boys write your answer as a fraction in simplest form
Answers: 1
Mathematics, 21.06.2019 19:50
Prove (a) cosh2(x) โ sinh2(x) = 1 and (b) 1 โ tanh 2(x) = sech 2(x). solution (a) cosh2(x) โ sinh2(x) = ex + eโx 2 2 โ 2 = e2x + 2 + eโ2x 4 โ = 4 = . (b) we start with the identity proved in part (a): cosh2(x) โ sinh2(x) = 1. if we divide both sides by cosh2(x), we get 1 โ sinh2(x) cosh2(x) = 1 or 1 โ tanh 2(x) = .
Answers: 3
Mathematics, 21.06.2019 20:40
Which questions would most a reader identify the author's purpose for writing? check all that apply. what type of text is this? what type of reviews did the book receive? how many copies of the book have been sold? what is the central idea? how does this text make one feel?
Answers: 2
Mathematics, 21.06.2019 23:00
The areas of two similar triangles are 72dm2 and 50dm2. the sum of their perimeters is 226dm. what is the perimeter of each of these triangles?
Answers: 1
Amath class has three girls and 7 boys in the 7th grade and five girls and five boys in the 8th grad...
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