Answer:
sin=0.945
cos=0.325
tan=2.902
Step-by-step explanation:
In a scientific calculator you simply enter "240°" then press cos/sin/tan after the degrees.
Answer:
C) P AND E
Step-by-step explanation:
Answer:
x=√
33
/3
,
−
√
33
/3
Step-by-step explanation:
Answer:
You will have 21 positive results.
Step-by-step explanation:
Sensitivity of test:
Is the true positive rate, that is, the proportion of positive results that give positive tests.
Specificity of test:
True negative rate, that is, the proportion of negative results that give negative tests.
90% sensitive, 20 reliable people apply
0.9*20 = 18
95% specific, 60 unreliable people apply
1 - 0.95 = 0.05 of positive results.
0.05*60 = 3
How many positive results will you have?
18 + 3 = 21
You will have 21 positive results.
107 Adult tickets were sold.
Total tickets sold = 428
428÷4=107 (split into four equal groups)
107×3=321 (amount of student tickets sold) (this is 3/4 of the total amount sold)
107×1=107 (amount of adult tickets sold) (this is 1/4 of the total amount sold)
321+107=428 (amount of tickets sold total)
321 (amount of student tickets sold) is three times the number of adult tickets sold. (107) 107×3=321
