Mathematics, 30.11.2020 20:10 59279
On considère les deux expressions A et B. A=4(x+5)-8 B=x au carré+15. Avec x=1,puis avec x=3, je trouve le même résultat pour A et B donc, quel que soit le nombre x, on a A = B. Emma a-t-elle raison ? justifier la réponse ? Merci si vous pouvez m'aider et bonne soirée
Answers: 2
Another question on Mathematics
Mathematics, 21.06.2019 19:50
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 20:00
An investment decreases in value by 30% in the first year and decreases by 40% in the second year. what is the percent decrease in percentage in the investment after two years
Answers: 1
Mathematics, 21.06.2019 23:00
What is the value of x in the equation7x+2y=48 when y=3
Answers: 2
Mathematics, 22.06.2019 02:00
Which is the best estimate of the product of 0.9 x 0.88? 0 0.25 0.5 1
Answers: 2
You know the right answer?
On considère les deux expressions A et B. A=4(x+5)-8 B=x au carré+15. Avec x=1,puis avec x=3, je tro...
Questions
English, 05.08.2021 23:20
Mathematics, 05.08.2021 23:20
Mathematics, 05.08.2021 23:20
Mathematics, 05.08.2021 23:20
Mathematics, 05.08.2021 23:20
Mathematics, 05.08.2021 23:20
Mathematics, 05.08.2021 23:20
