Answer:
A) x = ±2i√3
Step-by-step explanation:
We presume you want to find x such that f(x) = 0.
Divide by 13:
x² + 12 = 0
Subtract 12:
x² = -12
Take the square root:
x = ±i√12 = ±2i√3
Answer:
11.9
Step-by-step explanation:
The tenth place is the first decimal. You round down from 1-4 and up from 5-9, so round up.
11.9
Answer:
σX = 3161
Step-by-step explanation:
The standard deviation is the square root of the multiplication of each probability multiplied by the squared difference between the values and the mean.
In this question:
Rounding to the nearest dollar, σX = 3161
Answer:
13 < y + x < 32
Step-by-step explanation:
x in (8,10) and y in (5,22) implies x + y in (8+5,10+22) = (13,32) so 13 < y + x < 32.
Answer:
Net profit= $156,354
Step-by-step explanation:
Giving the following information:
A furniture company sells a desk for $1,435. It cost the company $817 to make the desk. Last month, 253 desks were sold.
<u>To calculate the net profit, we need to use the following formula:</u>
Net profit= number of units sold*(selling price - unitary cost)
Net profit= 253*(1,435 - 817)
Net profit= $156,354