4. Which situations would be represented by a negative number? Choose
all that apply. *
1 poi...
Mathematics, 11.12.2020 08:00 ella3714
4. Which situations would be represented by a negative number? Choose
all that apply. *
1 point
a. 23 degrees above 0 degrees F
b. 100 feet below sea level
c. Owing $200 for a new bicycle
d. Earning 45 points in a quiz game
e. A deposit of $45 in your savings account
Answers: 2
Mathematics, 21.06.2019 19:50, Roshaan8039
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
Mathematics, 21.06.2019 20:30, gsmgojgoss9651
Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.
Answers: 1