Answer:
1.) C = 76.1
2.) C = 5.8
Step-by-step explanation:
Function for compound interest:
Amount = Initial amount * ( 1 + (r/n) ) ^ (nt)
where r = interest rate per year, n = period per year
n = 2, r = 0.01
Answer: F(t) = 2,800 * [ 1 + (0.01/2) ] ^ 2t
Integers consists of zero (0), the positive natural numbers (1, 2, 3, ...), also called whole numbers or counting numbers, and their additive inverses (the negative integers, i.e., −1, −2, −3, ...).
So they are just asking for what positive or negative numbers make the equations true.
So remember how positive and a negative numbers relate and you will be fine.
B. x-(+7)=x+(-7)
C. X-(-25)=x+25
A. X-(-3)=x+3
Answer:
Mean = 0.45
Standard deviation = 0.04035
Step-by-step explanation:
This is actually a very simple problem.
The question gives us the report that 45% of the teenagers in the age bracket own smartphones.
P = mean = 45%
Therefore the mean is 0.45.
I will go ahead to help you calculate the standard deviation.
√p(1-p)/n
n = 152
P = 0.45
√0.45(1-0.45)/152
= √0.45(0.55)/152
= √0.2475/152
= √ 0.001628
= 0.04035
X= -12 :) hope this helps!!