Answer: (f·f)(0) = 4
(fof)(0) = -8
<u>Step-by-step explanation:</u>
f(x) = 3x - 2
(f·f)(x) = (3x - 2)(3x - 2)
= 9x² - 12x + 4
(f·f)(0) = 9(0)² - 12(0) + 4
= 4
(fof) = 3(3x - 2) - 2
= 9x - 8
(fof)(0) = 9(0) - 8
= -8
<em>I wasn't sure if you wanted multiplication or composition so I solved both</em>
Answer:
22% = 154
100%= ?
=100×154/22
= 700
Step-by-step explanation:
The gross profit margin is calculated using the following rule:
gross profit margin = total profit / total sales
Now, we need to get the values of total profit and total sale:
total profit = <span>9*8-(40+8)=24$
total sales = 9*8 = 72$
Now, we will substitute in the above equation:
gross profit margin = 24/72 = 1/3 = 0.3333334
% = 0.33333334*100 = 33.3334%</span>
Answer:
Test statistic = - 0.851063
- 2.520463
Step-by-step explanation:
H0 : μ ≥ 15
H1 : μ < 15
Sample mean, xbar = 14.5
Sample standard deviation, s = 4.7
Sample size = 64
Teat statistic :
(xbar - μ) ÷ (s/√(n))
(14.5 - 15) ÷ (4.7/√(64))
= - 0.851063
The critical value at α = 0.05
Using the T - distribution :
Degree of freedom, df = 64 - 1 = 63
Tcritical(0.05, 63) = 1.6694
Test statistic - critical value
-0.851063 - 1.6694
= - 2.520463