Answer:
84
Step-by-step explanation:
The mean is calculated as
mean =
, then
= 21 ( multiply both sides by 4 )
sum = 84
Answer:
{h| 0 ≤ h ≤ 60}
Step-by-step explanation:
Next time, please separate the possible answer choices with commas or semi-colons, or put them on separate lines.
The second set says it all: {h| 0 ≤ h ≤ 60}. This guy cannot work more than 60 hours per week, and h cannot be negative.
Answer:
9
Step-by-step explanation:
Total initially in bookstore = 45
Sold 13copies, remaining copies = 45-13= 32
Sold 23 copies again, remaining copies = 32-23 = 9
Copies left = 9
The decimal number used to represent 5 out of 100 missed on her test is 0.95.
Answer:

Step-by-step explanation:
Equation of a line:
The equation of a line has the following format:

In which m is the slope and b is the y-intercept(value of y when x = 0).
If two lines are perpendicular, the multiplication of their slopes is -1.
Contains (0, 2)
This means that
. So

Finding the slope:
Perpendicular to y = 2/3x + 1 means that:



So
