Let a,b,c,d and e are five numbers
mean = (a +b+ c+ d+e)/5 = 30
⇒ (a +b+ c+ d+e) = 150_______(1)
now, Let the number excluded be a
then, new mean = (b+ c+ d+e)/4 = 28
⇒ (b+ c+ d+e)= 112
putting this value in (1),
⇒a + 112 = 150
⇒a = 150 -112 = 38
excluded number = 38
(8/15)*(-3/10)
multiply numerators and denominators: -24/150
simplify: -4/25
the answer is A.
Answer:
53.2
Step-by-step explanation:
The answer is b, f(x) = (x) + 1.
