X^2 + 2x < 8
x^2 + 2x - 8 < 0
(x + 4)(x - 2) < 0 ,,
{x + 4 < 0 and x - 2 > 0} or {x + 4 > 0 ,,and x - 2 < 0} ,,
{x < -4 and x > 2} or {x > -4 and x < 2},,
Discard x < -4 and x > 2 because it has no solutions, leaving just
x > -4 and x < 2 ,,
-4 < x < 2
Correct!
Your notes on the right side are correct, too.
<em>In</em>dependent -- <em>not </em>dependent on another variable
Dependent -- dependent on another variable
The height of the plant varies because/due to of the quality/quantity of fertilizer.
So, the height is changed by the fertilizer.
Thus: height is dependent and fertilizer amount is independent.
Answer:
B. Set the alpha level at 0.05.
Step-by-step explanation:
Hypothesis testing is a procedure whereby a researcher determines if the null hypothesis is rejected or accepted, depending on the significant level or the alpha level. When a type I error is made, the null hypothesis is rejected even though it is correct. To solve this problem, the significant or alpha level is set to 5% or 0.05.
The nails cost the company $33669.
$387×$87=$33669.
Answer: We have 30 pump-hours needed to pump 40000 L
so x/30 = 60000/40000 , where x is the number of pump-hours
x = 45
pump-hours = 45
if pumps = 9
hours = 5
Step-by-step explanation: