Answer:
The function of f(x) is 20 for the middle problem idk the others
Step-by-step explanation:
The main property is as follow
(A^p)^q=A^pxq
so only Sam's work is correct because
(8^4)^5 x(7^3)^9=(8^4x5)x(7^3x9)=8^20x 7^27
Yes What do you need help with ?
Answer:
Test statistic = - 2.29
Pvalue = 0.0110
Step-by-step explanation:
The hypothesis :
H0 : p = 0.3
H1 : p < 0.3
Test statistic :
z=pˆ−p/√p(1−p)/n
pˆ = 0.2
Z = (0.20 - 0.30) / √(0.30(1 - 0.30) / 110
Z = - 0.1 / √0.0019090
Z = - 0.1 / 0.0436931
Z = - 2.29
Test statistic = -2.29
The Pvalue :
P(Z < -2.29) = 0.0110
Let's separate this absolute value equation into two different equations.
x + 1 = 3.
Subtract 1 from each side
x = 2.
x + 1 = -3
Subtract 1 from each side
x = -4
The two solutions are x = 2 and x = -4