A1=12
d=a2-a1→d=2-7=-5
a33=a1+32d→a33=12+32(-5)→a33=12-160=-148
Answer:
20
Step-by-step explanation:
5(-2)+30 = (-10)+30 = 20
Answer:
A. Yes
nowadays the precision requirements are more flexible, it depends largely on the variability
B. Yes
this limit is very conservative to give the probability that the population parameter is within that confidence interval,
C. No
the people in the sample are not without common variables and therefore their responses will be identically distributed
D. No
the people in the sample will have independent opinions, because it is not a valid argument to reject their point of view
Answer:
x = - 5, x = 2
Step-by-step explanation:
Using the rules of logarithms
log x - log y = log ( )
x = n ⇔ x =
note that log x = x
Given
log (x² + 3x) - log10 = 0, then
log( ) = 0, thus
= = 1 ( multiply both sides by 10 )
x² + 3x = 10 ( subtract 10 from both sides )
x² + 3x - 10 = 0 ← in standard form
(x + 5)(x - 2) = 0 ← in factored form
Equate each factor to zero and solve for x
x + 5 = 0 ⇒ x = - 5
x - 2 = 0 ⇒ x = 2
Solution is x = - 5, x = 2