Answer:
C
Step-by-step explanation:
There is a common ratio between consecutive term in the sequence, that is
÷
= 3 ÷
= 30 ÷ 3 = 300 ÷ 30 = 10
This indicates the sequence is geometric with n th term
= a
where a is the first term and r the common ratio
Here a =
and r = 10 , thus
=

=
× 
= 3 ×
× 
= 3 × 
Thus
= 3
→ C
180-115=65
65+70=135
180-135=45
SO C.45
Answer:
Step-by-step explanation:
3x + 3x + 5 + 5 = 6x + 10
Answer:
(C) x - 10
Step-by-step explanation:
0 - (-x +10)= -(-x)-(+10)= x-10
Answer:
d. 0.538
Step-by-step explanation:
Given information.
Standard deviation is 4.3
Random sample of 10
Consider the following calculations
P (sample mean is within 1 month of population mean)=
P(-1*sqrt(10)/4.3 <Z<sqrt(10)/4.3)=P(-.735<Z<0.735)
=0.538