Answer:
<h2>d. -4, 2, -1</h2>
Step-by-step explanation:
32, -16, 8, ...
The common ratio:
-16 : 32 = -0.5
8 : (-16) = -0.5
CORRECT :)
It's a geometric sequence.
8 · (-0.5) = -4
-4 · (-0.5) = 2
2 · (-0.5) = -1
Answer:
2
Step-by-step explanation:
The constant of proportionality is the slope
m = (y2-y1)/(x2-x1)
m = (4-0)/(2-0)
=4/2
=2
1/4 time 1/4 equals a half...or you can think about it as 25 plus 25 equals 50, (1/2 of a dollar)
Answer:
The population mean (μ) = 26.
Step-by-step explanation:
a) Data and Calculations:
The population characteristics = 20 and 36
Total population of interest = 56 (20 + 36)
Number of groups in the population = 2
Therefore, the population mean (μ) = 56/2 = 28
b) Based on the parameters given in this example, the population mean equals the average of the group characteristic (attention span of individuals in minutes) or item of interest. The population mean is calculated by adding the values of the group characteristic and then dividing the result by the number of values.
Answer:
The lines are perpendicular
Step-by-step explanation:
we know that
If two lines are parallel, then their slopes are equal
If two lines are perpendicular, then their slopes are opposite reciprocal (the product of their slopes is equal to -1)
we have
----> equation A
isolate the variable y
Divide by 7 both sides
The slope of the line A is 
----> equation B
isolate the variable y
Divide by 3 both sides
The slope of the line B is 
Compare the slope of both lines
so
----> the lines are not parallel
Find the product of the slopes
----> the lines are perpendicular
