Answer:
population mean: 14
employees worked: 73%
Step-by-step explanation:
The mean is found by adding the years of service and dividing by the number of employees. The total years of service is 417, so the average is ...
average years worked = 417/30 = 13.9 ≈ 14 . . . years
__
The percentage of employees that have worked there at least 10 years is found by counting the number with 10 or more years of service and dividing that count by the total number of employees. The result is then expressed as a percentage.
(10 years or over)/(total number) = 22/30 = 0.73_3 (a repeating decimal) ≈ 73%
_____
Comment on the working
A spreadsheet can be helpful for this. It has a function that can calculate the mean for you. Sorting the years of service into order can make it trivially easy to count the number that are 10 or more, or you can write a function that will do the count for you. (Also, less than 10 means the years are a single digit. There are 8 single-digit numbers in your list.) The hard part is copying 30 numbers without error.
Riddle: Mr. and Mrs. Mustard have six daughters and each daughter has one brother. How many people are in the Mustard family?
Correct answer gets Brainliest!! :)
Simplify the expression 1/4(8x+16y)
Answer:
2x+4y
Step-by-step explanation:
1/4(8x+16y)
( 1 /4 )(8x+16y)
Distribute
( 1 /4 )(8x)+( 1 /4 )(16y)
=2x+4y
merry Christmas
the mean household income for a certain state is $71,000 with a standard deviation of $10,000 assuming a normal distribution about 95% of all households have an income over what amount?
Answer:
About 95% of households have an income over $54,550
Step-by-step explanation:
95% is a probability of around 0.95
So we start by calculating the z-score with a probability of 0.95
We can use the standard normal distribution table for this
the z-score is -1.645
Mathematically;
z-score = (x-mean)/SD
-1.645 = (x-71,000)/10,000
10,000 * -1.645 = x-71,000
-16450 = x - 71000
x = 71,000 - 16450
x = 54,550
A bag contains 10 red, 3 blue, and 2 yellow marbles. If 3 marbles are selected one at a time with replacement, find the probability that all three are different colors
Answer:
4/225
Step-by-step explanation:
To get 3 marbles that all three are different colors, we need to get a red, blue, and yellow marble (not necessarily in that order)
So we get the probability of getting each with replacement (meaning they are all out of 15) and multiply them.
The probability of getting a red is:
10/15 = 2/3
The probability of getting a blue is:
3/15 = 1/5
The probability of getting a yellow is:
2/15
So to get all 3 different colors:
2/3 * 1/5 * 2/15 = 4/225
4 ( x+3) =16
HELP ! > DICLAIMER I KNOW THIS STUFF IM JUS BEING VERY LAZY .
Answer:
x=1
Step-by-step explanation:
Please help me on this
Answer:
25 mph
Step-by-step explanation:
Will GIVE BRAINLIEST IF CORRECT
The diagram shows a convex polygon.
Find the value of a.
Answer:
The value of a is 15.
Step-by-step explanation:
First, you have to find the total interior angles of the polygon using the formula, sum = (n-2)×180°, where n represents the number of sides :
sum = (n-2)×180°
sum = (5-2)×180°
sum = 540°
Given that the sum of the interior angle is 540° so in order to find the value of a, you have to add up all the angles in terms of a :
3a + 150 + 8a + 6a + 9a = 540
26a + 150 = 540
26a = 390
a = 390 ÷ 26
a = 15
Find the product: 1 1/4×5 3/5.
Answer:
7
1x4+1/4 x 5 3/5
4+1/4 x 5 3/5
5/4x5 3/5
5/4 x 25+3/5
5/4x38/5
1/4x28
28/4
7
Answer:
=7
Step-by-step explanation:
(1 1/4)(5 3/5)
=5/4 (5 3/5)
=5/4 (28/5)
=7
[tex]\frac{15}{3} = \frac{6}{x}[/tex]
what is x ??
Triangle A'B'C is the image of ABC under a dilation
Answer: umm is there a picture?
Step-by-step explanation:
Write 1.2 as a fraction or mixed number.
Answer: 1 1/5
Step-by-step explanation:
Answer:
Mixed number- 1 and 1/5
Fraction- 12/10
Step-by-step explanation:
1.2 is read as 1 and 2 tenths. 1 and 2 tenths is the same as 1 and 2/10.
1 and 2/10 in simplest from is 1 and 1/5.
1 and 1/5 can also be written as 12/10.
Hope this helps :)
DAILY MATH QUESTIN!
CAN YOU SOLVE IT?
Answer:
2
Step-by-step explanation:
you solve the parentases first which equals 12 and then you take 2 times 12 which is 24 and 48 divided by 24 is 2
Answer:
288
Step-by-step explanation:
Start with what's in parentheses: 9 + 3 = 12Plug 12 in: 48 ÷ 2(12)48 ÷ 2 = 24Plug 24 in: 24(12)24(12) = 24 × 12 = 288I hope this helps!
The table shows the volume V (in cubic feet) of a cube with a side length of x feet. Does the table represent a linear or nonlinear function? Explain your answer.
Answer:
Step-by-step explanation:Determine whether each table represents a linear or nonlinear function. ... Show. YOUY work. Nonlinear; as x increases by 1, y increases by a greater amount of ... A cube has a side length of s meters. ... (Example 4) Nonlinear; sample answer: If you graph the function, the ordered pairs (side length, volume) do not lie on a.
Shoes selling price is $1099. It costs $413.50 to make. What is the percent markup?
Answer:
166%
Step-by-step explanation:
Shoes selling price is $1099. It costs $413.50 to make. What is the percent markup?
1099/413.50=266%
266&-100%=166%
2. If 5x + 8 = 4, then 3x = ?
please answer guys
Answer:
3x = -2 2/5 or -2.4
Step-by-step explanation:
5x + 8 = 4
5x = 4 - 8
5x = -4
x = -4/5
3x = y If x = -4/5
3 * -4/5 = y
-12/5 = y
-2 2/5 = y
Determine the approximate value of x using basic trigonometry.
(Round to the nearest hundredth..)
Answer:
The value of x = 35.62
Therefore, option C) is true.
Step-by-step explanation:
Given
Ф = 58°
hypotenuse = 42
To determine:
x = ?
We know that the trigonometric ratio
sin Ф = opposite / hypotenuse
Here:
The opposite of Ф = xФ = 58°hypotenuse = 42so substituting the value
sin Ф = opposite / hypotenuse
sin 58° = x / 42
x = 42 × sin 58°
= 35.62
Thus, the value of x = 35.62
Therefore, option C) is true.
What are the x and y intercept for the graph of 4x - 3y = -12
Answer:
(-3,0) = x and (0,4) = y
Step-by-step explanation:
Helppppppppppppppp pls
Based on the scatter plot below, which is a better prediction for x when y =3?
There are 28 grape vines in each of the 52 rows of a vineyard. There are 24 rows of green grapes. All other rows are red grapes. How many red grape vines are in the orchard?
Answer:
784 red grape vines
Step-by-step explanation:
There are 28 grape vines in each of the 52 rows of a vineyard. There are 24 rows of green grapes. All other rows are red grapes. How many red grape vines are in the orchard?
In a vineyard
We have 52 rows
24 rows = Green grapes
The number of red grape rows =
52 rows - 24 rows
= 28 rows.
We are told are told: There are 28 grape vines in each of the 52 rows of a vineyard.
This means
1 row = 28 grape vines
Hence, the number of red grape vines that are in the orchard
1 row = 28 grape vines
28 rows = x grape vines
x = 28 × 28 grape vines
x = 784 red grape vines
tell me something?????????????
Solve for x.
7x + 15
30
24
44
Help ASAP
Answer:
x = 12
Step-by-step explanation:
Let a = the length of the missing side
[tex]\frac{24}{30} = \frac{44}{a}[/tex]
simplify: [tex]\frac{4}{5} = \frac{44}{a}[/tex]
use cross multiplication
4a = 220
a = 55
7x + 15 = 44 + 55
7x = 84
x = 12
Does anyone know how to do this?
I will mark you brainlyest if you answer this
math science technology engineering arts mathematics STEAM STEAM STEAMMMM
Answer:
I dont get the question
Step-by-step explanation:
Answer:
STEM: science technology enginearing maths.
Step-by-step explanation:
i never used the art in this definition
What is x for a perimeter of 108 kilometers?
A. 53
B. 15
C. 18
D. 105
Answer:
c. 18
Step-by-step explanation:
4x + 5y = 7 and 8x + 5y = 9 *
Elimination
Answer:
Solve equation [2] for the variable y
[2] y = 8x + 7
// Plug this in for variable y in equation [1]
[1] 4x - 5•(8x+7) = -9
[1] -36x = 26
// Solve equation [1] for the variable x
[1] 36x = - 26
[1] x = - 13/18
// By now we know this much :
x = -13/18
y = 8x+7
// Use the x value to solve for y
y = 8(-13/18)+7 = 11/9
Solution :
{x,y} = {-13/18,11/9}
can someone please help me and explain how you got you answer please
y=2x+1
(2x) is the slope because the slope is going up the slope will be positive and the (1) is the y intercept which means where the slope crosses the vertical line
Answer:
A
Step-by-step explanation:
The equation for a graph is y=mx+b
The b is the y-intercept, or what the y-value is at x=0 (x is horizontal or left and right, y is vertical or up and down). At x=0, y is at 1, so it has to be +1.
The m is the slope, or the rise over run, which you solve by doing the equation (y2-y1)/(x2-x1). You do this by taking one set of coordinate positions, let's say (0,1), and another, let's say (1,3). The first set is your x1 and y1, and the second set is your x2 and y2. In this case, x1=0,y1=1,x2=1,y2=3
then do the equation. (3-1)/(1-0) 2/1=2, so the slope, or m, is 2.
Use the Distributive Property to on the following expression:
5 (3x + 26 - 9y + 10)
Answer:
15x -45y +180
Step-by-step explanation:
5(3x)= 15x
5(26)= 130
5(-9y)= -45y
5(10)= 50
combine like terms:
15x - 45y +180
During a math game, a team kept track of their answers. The following diagram describes the number of answers they got right to the number they got wrong.
What is the ratio of right answers to wrong answers?
Choose 1 answer:
Answer:
there is no additional information shown
How would i do this 243.79 in expanded form?
Please answer my question.
Answer:
200+40+3+0.7+0.09
Step-by-step explanation: