Given a student has the averages listed below, find the student's grade assuming these weights: homework (5%), quizzes (10%), midterm (20%), final exam (65%).
Homework: 94.1%
Quizzes: 87.3%
Midterm: 68%
Final Exam: 67%
A: The students grade is 87.3%
B: The students grade is 80.6%
C: The students grade is 79.1%
D: The students grade is 70.6%
E: The students grade is 77.7%

answer: cos [   arcsin (3/5) - arccos (1/2) ] =

step-by-step explanation: × = 3/5 = 0.6--> x = 36.87 and x = 180 - 36.87 = 143.13 deg

cos y = 1/2 --> y = +- 60 deg a. cos (x - y) = cos (143.13 - 60) = cos 83,13  

=

0.12

b. cos (36.87 - 60) = cos (-23.23) = 0.92

“a term can be a signed number, a variable, or a constant multiplied by a + sign or j sign. in , the terms are 5x , 3y and 8. when a term is made up of a constant multiplied by a variable or variables, that constant is called a coefficient.” i hope this you.