Answer:
About 226 feet.
Step-by-step explanation:
C = πd
C = π * 18 = 56.5486678
56.5486678 * 4 = 226.194671
Jeremy Earned $33 for four hours of work .how much would he earn for seven hours of work at the same rate
Kelsie works at a bicycle shop as a salesperson. She records the number of bicycles she sells daily. Here is the probability distribution of B = the number of bicycles Kelsie sells on a randomly selected day, and T the time she spends filling out daily sales reports. 2 B = # of bicycles sold T = time (minutes) Probability 40 20 10 0. 05 0. 15 0. 50 0. 30
a) Calculate E(B)
b) Calculate the mean time she spends filling out daily reports.
c) Calculate the standard deviation for both random variables
The amount of time Kelsie should spend doing daily sales reports is 9.5 minutes.
What is meant by discrete distribution?If a random variable has a limited number of outcomes or a countable number, it is discrete (i.e. the integers are infinite, but are able to be counted).
The discrete distribution presented reveals that the expected value of Kelsie's time spent completing daily sales reports is 9.5 minutes.
The discrete distribution given is:
P(X = 0) = 0.3
P(X = 10) = 0.5
P(X = 20) = 0.15
P(X = 30) = 0.05
The average of a discrete distribution is equal to the sum of each result times the probability associated with that outcome, so:
E(X) = 0(0.3) + 10(0.5) + 20(0.15) + 30(0.05) = 9.5
Therefore, the amount of time Kelsie should spend doing daily sales reports is 9.5 minutes.
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a. E(B) = 9.5
b. The amount of time Kelsie should spend doing daily sales reports is 9.5 minutes.
c. Standard variable shows how much deviation from mean variable.
What do you understand by discrete distribution?In statistics, a discrete distribution is a probability distribution that estimates the probability of a certain discrete, finite outcome. Simply put, as opposed to a continuous distribution, the discrete probability distribution aids in determining the probabilities of the occurrence of a specific event expressed in terms of positive, non-decimal, or whole integers.
The discrete distribution given is:
P(X = 0) = 0.3
P(X = 10) = 0.5
P(X = 20) = 0.15
P(X = 30) = 0.05
The average of a discrete distribution is equal to the sum of each result times the probability associated with that outcome, so:
E(B) = 0(0.3) + 10(0.5) + 20(0.15) + 30(0.05) = 9.5
Therefore, the amount of time Kelsie should spend doing daily sales reports is 9.5 minutes.
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solve the inequality and explain how
Answer:
B. (see attached)
Step-by-step explanation:
You want the solution and graph of the inequality |x+3| > 2.
SolutionThe inequality resolves to two inequalities with different domain definitions:
|x +3| > 2
When the argument is negative, (x+3) < 0, this is ...
-(x +3) > 2
-x -3 > 2 . . . . . . eliminate parentheses
x +3 < -2 . . . . . . multiply by -1
x < -5 . . . . . . . . . subtract 3; consistent with the domain definition
When the argument is positive, (x+3) > 0, this is ...
x +3 > 2
x > -1 . . . . . . . . subtract 3
-1 < x . . . . . . . . same thing using the < symbol
These differing solution sets do not overlap, but elements of either set are solutions to the inequality. The appropriate conjunction is "OR":
solution: x < -5 or -1 < x
The graph is attached.
__
Additional comment
We like to use the < or ≤ symbols when expressing the solution to an inequality. That way, the relation of the variable to the boundary value is the same as its relation on a number line. Solution values are left of -5 or right of -1:
x < -5 or -1 < x
It helps provide a check that the graph is properly drawn.
The inequality can be rewritten as ...
|x -(-3)| > 2
which can be interpreted as saying the positive distance from x to -3 is more than 2. This tells you the graph will have two disjoint branches, and the appropriate conjunction is OR.
If the problem were different, and the inequality were ...
|x -(-3)| < 2
it would be telling you the solution values have a distance less than 2 from -3. They will be in one continuous band from -5 to -1, so the appropriate conjunction is AND. The solution in this case is usually written as a compound inequality with no conjunction: -5 < x < -1. (Note the use of < symbols puts the variable value in the middle, between the boundary values, as in graph D.)
Which point is in Quadrant III?
Answer:
B
Step-by-step explanation:
B is in Quadrant III.
B is the answer.
Choose three true statements about the angles of the figure
1: Z1 and the 55* angle are adjacent
2: mZ1=55* because Z1 and the 55* angle are vertical angles
3: mZ2=125* because Z2 and the 55* angle are supplementary
4: mZ2 cannot be determined from the information
5: mZ1=180*-55*
6: mZ2=180*-55*-45*
Three true statements about the angles of the given figure are,
1. angle 1 and the 55 degree angle are adjacent.
5. angle 1 = 180 degree - 55 degree
6. angle 2 = 180 degree - 55 degree - 45 degree.
How are complementary angles defined?Complementary angles are two angles whose measures add up to 90 degrees. For example, an angle of 45 degrees and an angle of 45 degrees are complementary. When two angles are complementary, they form a right angle. The symbol for complementary angles is ∠A + ∠B = 90°.
What is the difference between acute angles and obtuse angles?Acute angles are angles whose measure is less than 90 degrees. They are sharp angles that are less than a right angle. On the other hand, obtuse angles are angles whose measure is greater than 90 degrees. They are angles that are greater than a right angle and less than 180 degrees. In other words, obtuse angles are angles that are wider than a right angle but less than a straight angle.
Analysing all the statements given in the question,the corrrect options are
Option 1, since angle 1 and 55 degree share the same vertex.
Option 5, since the sum of angle 1 and 55 degree is 180 degrees being supplementary angles.
Option 6, since the sum of all the interior angles of a triangle is 180 degrees.
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which of the following is the solution to the inequality below?
Answer:
A
Step-by-step explanation:
Given
- 5x - 10 < 20 ( add 10 to both sides )
- 5x < 30
Divide both sides by - 5, reversing the symbol as a result of dividing by a negative quantity
x > - 6 → A
Eric got home from work at 8:00 pm. He was traveling for 1 hour and 15 minutes. At what time did he start traveling home from work?
Answer:
the answer is 6:45pm brain list me
Simplifying algebraic expressions
The simplified form of the algebraic expression [tex]2c-7c[/tex] is [tex]-15[/tex]
The given algebraic expression is [tex]2c-7c[/tex] and we need to use [tex]c=3[/tex]
Let's substitute the value of [tex]c[/tex] in the given algebraic expression, that is
[tex]=2(3)-7(3)\\=6-21\\=-15[/tex]
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Answer:
-15----------------------
Given expression
2c - 7cSimplify it:
2c - 7c = (2 - 7)c = - 5cFind its value by plugging in the value of c:
- 5c = - 5*3 = - 15Find the measures of all of the missing angles. FAST!!!
Answer:
angle BCD=58 degree
angle ACD=32 degree
angle DAC=58 degree
angle CDB=90 degree
Step-by-step explanation:
Hope it helps you!!
9. A triangle with a height of 12 inches has an area of 36 square inches. How long is the base of the triangle?
If anyone knows this please tell me this is due tommorow!
Answer:
Step-by-step explanation
The triangle base would be 6
raph of the function f(x) = (x+2)(x+6) is shown
-4 2
4
2+
N
-2
-6
2
4 6
X
What is true about the domain and range of the function?
O The domain is all real numbers, and the range is all
real numbers greater than or equal to -4.
O The domain is all real numbers greater than or equal
to
-4, and the range is all real numbers.
O The domain is all real numbers such that -6 ≤x≤-2,
and the range is all real numbers greater than or equal
to-4.
O The domain is all real numbers greater than or equal
to
-4, and the range is all real numbers such that -6 sx
≤-2.
The domain of a function is the set of all input values (x-values) for which the function produces a valid output (y-value). In this case, the function f(x) = (x+2)(x+6) is defined for all real numbers, so the domain is all real numbers.
What do a function example's range and domain mean?
A straightforward function, such as f(x) = x2, can have a domain (what goes in) of just the counting numbers 1, 2, 3, etc., and a range (what comes out) of the set 1, 4, 9, etc. Another function, g(x) = x2, may have an integer domain of..., -3, -2, -1, 0... 1, 2, 3, and its range is..., 1, 4, 9,...
The range of a function is the set of all possible output values (y-values) produced by the function. The function f(x) = (x+2)(x+6) is a polynomial, and all polynomials of the form (ax^2 + bx + c) with real coefficients (a,b,c) have range is all real numbers. The range of the function f(x) = (x+2)(x+6) is also all real numbers.
So the answer is
The domain is all real numbers, and the range is all
real numbers.
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you don't have to explain anything just say the answer to the pic.
A. 2 meters
B. 2.31 meters
C. 2.309 meters
D. 2.3 meters
Find the 35th term for the sequence: 12, 9.5, 7, 4.5...
Answer:
-73
Step-by-step explanation:
So to begin you must find where you start on a graph. To do this you can go backwards from your first number and in this situation it would be 14.5 because the slope is -2.5x. I will use y as the answer.
y=-2.5x+14.5
From here you plug in how many terms are neeeded for the correct answer. In this situation there is 35 terms needed.
y=-2.5(35)+14.5
Solve this equation to get your answer.
y=-73
Answer:
The 35th term is - 73.----------------------------
Given sequence:
12, 9.5, 7, 4.5...This is an AP with the common difference of:
d = 4.5 - 7 = 7 - 9.5 = 9.5 - 12 = - 2.5The first term is a = 12.
Use the nth term equation to find the 35th term:
aₙ = a + (n - 1)da₃₅ = 12 + (35 - 1)(- 2.5) = 12 - 34*2.5 = 12 - 85 = - 73In a survey 1500 people , 775 of them like nepal idol , 975 like comedy chapion and 450 people like both the showes how many people didnot like both the show
Answer:
Step-by-step explanation:
Hope this helps u!!
There will be 800 people who did not like either show.
What is a survey?To find out how many people did not like either show, we need to subtract the number of people who liked both shows from the total number of people surveyed.
Let A be the number of people who liked Nepal Idol, B be the number of people who liked Comedy Champion, and C be the number of people who liked both shows.
According to the problem, we have:
A = 775
B = 975
C = 450
To find the number of people who did not like either show, we can use the formula:
Total number surveyed - (A + B - C)
Substituting the values given in the problem, we get:
1500 - (775 + 975 - 450) = 800
Therefore, 800 people did not like either show.
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How many solutions does 5x 2 7x 4 0 have?
The given equation gives two solution. We can find solution by using quadratic formula or discriminant.
How do you find the number of solutions?A linear equation in two variables is an equation of the form ax + by + c = 0 where a, b, c ∈ R. So a and b ≠ 0. When we consider a system of linear equations we can find the number of solutions by comparing the coefficients of the variables of the equations.
How do you find how many solutions are in a quadratic equation?
if the discriminant is positive. Then the quadratic equation has two solutions.
if the discriminant is equal. Then the quadratic equation has one solution.
if the discriminant is negative. Then the quadratic equation has no solution.
Here we have
a=5 b=-7 c=4
Disc= [tex]b^2[/tex]-4ac
Disc= [tex](-7)^2[/tex]-4(5)(4)
Disc= 49+80
=129
Disc >0 it has two solutions.
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Complete question is: How many solutions are there for 5x^2+7x-4=0?
a) 0
b) 1
c) 2
d) 3
A research scientist wants to know how many times per hour a certain strand of bacteria reproduces. The mean is found to be 4 reproductions and the population
standard deviation is known to be 1.9. If a sample of 283 was used for the study, construct the 95% confidence interval for the true mean number of reproductions
per hour for the bacteria. Round your answers to one decimal place.
The 95% confidence interval for the true mean number of reproductions per hour for the bacteria is given as follows:
(3.78, 4.22)
What is a z-distribution confidence interval?The bounds of the confidence interval are calculated according to the equation presented as follows:
[tex]\overline{x} \pm z\frac{\sigma}{\sqrt{n}}[/tex]
In which:
[tex]\overline{x}[/tex] is the sample mean.z is the critical value.n is the sample size.[tex]\sigma[/tex] is the standard deviation for the population.The confidence level is of 95%, hence the critical value z is the value of Z that has a p-value of [tex]\frac{1+0.95}{2} = 0.975[/tex], so the critical value is z = 1.96.
The remaining parameters are given as follows:
[tex]\overline{x} = 4, \sigma = 1.9, n = 283[/tex]
Hence the lower bound of the confidence interval is of:
[tex]4 - 1.96\frac{1.9}{\sqrt{283}} = 3.78[/tex]
The upper bound of the confidence interval is of:
[tex]4 + 1.96\frac{1.9}{\sqrt{283}} = 4.22[/tex]
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Help!! find the inequality represented by the graph
Answer:
y < (3/4)x
Step-by-step explanation:
What is the answer to this question? I need help.
Fwam went shopping for a new phone. Sales tax where he lives is 9%. The price of the phone is $33. Find the total price including tax. Round to the nearest cent.
Answer:
$35.97
Step-by-step explanation:
33 × .09 = 2.97
33 + 2.97 = $ 35.97
the sum of a number b and 24
answer:
b+24
step-by-step explanation:
it’s just asking for the sum so add the two values. there are no other integers given other than 24 so the answer is in expression form. hope that helps!
On Thursday, a local hamburger shop sold a combined total of 429 hamburgers and cheeseburgers. The number of cheeseburgers sold was two times the
number of hamburgers sold. How many hamburgers were sold on Thursday?
hamburgers
Let H be the number of hamburgers sold and C be the number of cheeseburgers sold.
The total number of hamburgers and cheeseburgers sold is given by the equation: H + C = 429
The number of cheeseburgers sold is given by the equation: C = 2H
Substituting the second equation into the first equation, we get: H + 2H = 429
Combining like terms, we get: 3H = 429
Dividing both sides by 3, we get: H = 143
On Thursday, 143 hamburgers were sold.
simplify when x=4 3x^3+3
Answer:
The value is 195 When x = 4 in 3x³ + 3.
Step-by-step explanation:
3x³ + 3
Insert 4 for x.
3(4)³ + 3
Cube the 4.
3(64) + 3
Multiply 3 by 64.
192 + 3
Add.
195
Can someone please help me with this two part question?
Answer:
HM = 11
CD = 12.5
Step-by-step explanation:
[tex]A)[/tex]
[tex]1)\ NH*HM = JH * HK[/tex]
[tex]2)\ 33 * HM = 363[/tex]
[tex]3)\ HM = 11[/tex]
[tex]B)[/tex]
[tex]1)\ GV^2 = VC * (DC + AC)[/tex]
[tex]2)\ 15^2 = 10 * (CD + 10)\\[/tex]
[tex]3)\ 225 = 10CD + 100\\[/tex]
[tex]4)\ 125 = 10CD\\[/tex]
[tex]5)\ CD = 12.5[/tex]
Can anyone please help with this?
Answer:
$200
Step-by-step explanation:
The y-intercept is where the line meets the y-axis (vertical). The line on the graph appears to go through the point (0, 200).
What is the segment partition formula?
The segment partition formula is used to calculate the coordinates of a point on a line segment, given the coordinates of the two endpoints of the segment and the ratio of the desired point from the first endpoint.
The formula is:
Point = (x1 + r * (x2 - x1), y1 + r * (y2 - y1))
Where x1 and y1 are the coordinates of the first endpoint, x2 and y2 are the coordinates of the second endpoint, and r is the ratio of the desired point from the first endpoint.
The segment partition formula is used to calculate the coordinates of a point on a line segment, given the coordinates of the two endpoints and the ratio of the desired point from the first endpoint. The formula is given in the form of Point = (x1 + r * (x2 - x1), y1 + r * (y2 - y1)).
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help plsssss its due tonight
Answer:
this is from my math teacher's notecards! :)
Step-by-step explanation:
CAN SOMEONE PLZ HELP ME!!!
Answer:
hope this helps
Step-by-step explanation:
Strawberry = 14
blueberry = 14
cherry = 7
chocolate = 7
apple = 14
Thalia is in the room located at (22,1). What room is she in? Describe in words how to get from the origin to this point.
Answer:
quadrant 1
Step-by-step explanation:
b/c quadrant(+,+)
From the origin,
she is 22 units to the right and 1 unit upwards.
What are coordinates?Coordinates are a pair of integers (Cartesian coordinates), or occasionally a letter and a number, that identify a certain place on a grid, often referred to as a coordinate plane.
Given:
Thalia is in the room located at (22,1).
From the origin to this point (22,1).
In the first quadrant,
From the origin,
she is 22 units to the right and 1 unit upwards.
Therefore, she is 22 units to the right and 1 unit upwards.
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Can you help me with this
==========================================================
Explanation:
Pick any two points on the line to apply the slope formula.
I'll select (-5,1) and (5,-1)
[tex](x_1,y_1) = (-5,1) \text{ and } (x_2,y_2) = (5,-1)\\\\m = \text{slope} = \frac{\text{rise}}{\text{run}} = \frac{\text{change in y}}{\text{change in x}}\\\\m = \frac{\text{y}_{2} - \text{y}_{1}}{\text{x}_{2} - \text{x}_{1}}\\\\m = \frac{-1 - 1}{5 - (-5)}\\\\m = \frac{-1 - 1}{5 + 5}\\\\m = \frac{-2}{10}\\\\m = -\frac{1}{5}\\\\[/tex]
The slope as a fraction is -1/5
A slope of -1/5 means " go down 1, then to the right 5 units".
An example of this motion is when going from (-5,1) to (0,0)
Another example would be going from (0,0) to (5,-1)
----------
The "down 1, right 5" motion is because
slope = rise/run = -1/5rise = -1 = go down 1run = 5 = go to the right 5In the figure given alongside: O is the centre of circle. If
To
OP AB, write the relation between AP and AB.
plz help
Answer:
[tex]AP = \frac{1}{2} AB \\ AB = 2AP[/tex]