Answer:
I think the answer is 2x^2+5x−8
Step-by-step explanation:
Answer:
Step-by-step explanation:
In the past, mean of age of employees
i.e. 
Recently sample was taken
n = sample size = 60
Mean of sample = 45
Std dev of sample s = 16

(Right tailed test)
Since only population std deviation is known we can use t test only
Std error = 
Mean difference = 45-40 =5
Test statistic t=
df = 60
p value =0.008739
Since p < 0.05 we reject null hypothesis
The mean age has increased.
Answer:
a) it is like terms so the will 3 kilograms
b) it isn't like terms
c) it isn't like terms
The answer is D = 80
D =16t if t= 5 then d = 80