a) The probability is approximately 0.9973.
b) The store takes in at most [tex]$\$ 15,600.00$[/tex].
a) To estimate the probability that the store's revenues were at least [tex]$\$9,500$[/tex], we need to find the z-score corresponding to this revenue value and then find the probability associated with that z-score in the standard normal distribution.
First, we calculate the z-score:
[tex]\[ z = \frac{X - \mu}{\sigma} = \frac{9500 - 3200}{2000} = \frac{6300}{2000} = 3.15 \][/tex]
Using a standard normal distribution table or a calculator, we find that the probability corresponding to [tex]$z = 3.15$[/tex] is approximately 0.9987.
So, the estimated probability that the store's revenues were at least [tex]$\$9,500$[/tex] is approximately 0.9987.
b) To find out how much the store takes in on the worst [tex]$10\%$[/tex] of such days, we need to find the revenue value corresponding to the [tex]$90\%$[/tex] percentile of the distribution.
Using the standard normal distribution table or a calculator, we find that the [tex]$90\%$[/tex] percentile corresponds to a z-score of approximately 1.28.
Now, we can find the revenue value:
[tex]\[ X = \mu + z \times \sigma = 3200 + 1.28 \times 2000 = 3200 + 2560 = 5760 \][/tex]
So, on the worst [tex]$10\%$[/tex] of such days, the store takes in at most [tex]$\$5,760.00$[/tex].
The correct question is:
A grocery store's receipts show that Sunday customer purchases have a skewed distribution with a mean of [tex]$\$ 32$[/tex] and a standard deviation of [tex]$\$ 20$[/tex]. Suppose the store had 294 customers this Sunday.
a) Estimate the probability that the store's revenues were at least [tex]$\$ 9,500$[/tex].
b) If, on a typical Sunday, the store serves 294 customers, how much does the store take in on the worst [tex]$10 \%$[/tex] of such days?
a) The probability is [tex]$\square$[/tex].
b) The store takes in at most [tex]$\$ \square$[/tex].
Show work please. thank you
One option in a roulette game is to bet $2 on red. (There are 18 red compartments, 18 black compartments, and two compartments that are neither red nor black.) If the ball lands on red, you get to keep the $2 you paid to play the game and you are awarded $2. If the ball lands elsewhere, you are awarded nothing and the $2 that you bet is collected. Find the expected payback for this roulette game if you bet $2 on red.
The expected payback for betting $2 on red in a roulette game is -$0.62. This indicates an expected average loss, making it not a profitable bet.
Explanation:The expected payback for betting $2 on red in a roulette game is -$0.62. This means that on average, you would expect to lose 62 cents per game if you play this game repeatedly over a long string of games. The expected value indicates an expected average loss, so it is not a profitable bet.
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simplify each expression -(5p+3)
Answer:
-5p-3
Step-by-step explanation:
use the distributive property
Elise is measuring the angles of a triangle. She measures the first two and gets 30° and 100°. What should be the measure of the third angle?
A) 50°
B) 60°
C) 130°
D) 230°
The measure of the third angle is 50 degrees for the given triangle. The correct answer would be an option (A).
What is a Triangle?Triangle is defined as a basic polygonal shape of a triangle that has three sides and three interior angles. It is one of the fundamental shapes in geometry and is represented by the symbolΔ.
Let x be the measure of the third angle.
As we know that the sum of interior angles in the triangle is always 180 degrees.
So, as per the given question, we have
30° + 100° + x = 180°
130° + x = 180°
x = 180° - 130°
Apply the subtraction operation, and we get
x = 50°
Thus, the measure of the third angle is 50 degrees.
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what does u stand for and could you make your answer a little clearer please?
How many solutions can be found for the linear equation?
(3x + 12) 3 - 1 = (4x + 16) 2
one solution
Step-by-step explanation: i just did the test lol
If a dilation is applied to a triangle, then the image must be _____
Answer: I believe it would be "larger or smaller triangle" due to when dilation is applied it mostly only changes the size of the figure but never changing its shape. Hope this helps :)
Eugene earns $17 per hour tutoring athletes at Brooklyn University.
A. if Eugene tutored for 12 hours just last month, how much money did she earn this month?
B. if Eugene tutor for 19.5 hours last month, how much money did she earn last month?
Answer:
A) $204 B) $331.50
Step-by-step explanation:
For both scenarios, you just multiply the amount of hours worked by the amount per hour to find the total amount made.
Eugene earned $204 by tutoring for 12 hours and $331.50 for 19.5 hours, calculated by multiplying the number of hours by her hourly rate of $17.
Eugene earns money by tutoring athletes at Brooklyn University. The amount she earns can be calculated by multiplying the number of hours she tutors by the hourly rate.
Part A Calculation
For 12 hours of tutoring:
Amount Earned = Hourly Rate imes Hours Tutored
Amount Earned = $17/hour imes 12 hours
Amount Earned = $204
Part B Calculation
For 19.5 hours of tutoring:
Amount Earned = Hourly Rate imes Hours Tutored
Amount Earned = $17/hour imes 19.5 hours
Amount Earned = $331.50
James built a small electric car and recorded the distance it traveled. The table below shows the distance traveled (n) during the first 4 seconds after starting (f). Elapsed Time (seconds) Distance Traveled (feet) 1 6.2 2 12.4 3 18.6 4 24.8 Which of the following equations represents the relationship between the distance traveled and the elapsed time? f = 6.2 + n n = 6.2 + f f = 6.2n n = 6.2f
Answer:
Answer: n = 6.2 f
Step-by-step explanation:
so you only know the answer
Jake walks a mile to work. If Jake has already walked two-fifths of a mile, how many more feet must he walk to get to work?
1 mile = 5280 feet
5280 * 3/5 = 3168 feet more to go
What is 571,951 in written form
3/4 of a number is 27, what's the number? I'm asking what is the blank in
3/4 x something over 1 that would reduce to 27
A refrigerator contains 6 apples, 5 oranges, 10 bananas, 3 pears, 7 peaches, 11 plums, and 2 mangos. imagine you stick your hand into the refrigerator and pull out a piece of fruit at random. what is the sample space for this process?
How many times can you put 555555 in 52222854
If g'(3)=8 and h'(-3)=6, find f'(-3) for f(x)=-3g(x)-2h(x)+3
A pound of raisins costs $2.00, and a pound of almonds costs $5.00. Six pounds of a trail mix contains 2 more pounds of raisins than almonds. What is the cost of the 6 pounds of trail mix? $7.00 $18.00 $24.00 $42.00
Answer:
18 just took the test
Please help me with this problem.
The diagram shows the floor plan of a one-bedroom apartment. Find the area of the living room in square feet. Round to nearest square foot.
The area of the living room is approximately 238 square feet.
To find the area of the living room, we need to multiply its length by its width.
First, let's convert the dimensions from feet and inches to feet. We have:
Length: 12 feet + 4 inches = 12 + 4/12 = 12.33 feet
Width: 19 feet + 4 inches = 19 + 4/12 = 19.33 feet
Now, we can multiply the length and width to find the area:
Area = length × width = 12.33 feet × 19.33 feet = 238.1289 square feet
Rounding to the nearest whole square foot, the area of the living room is approximately 238 square feet.
Please help me with this problem.
The diagram shows the floor plan of a one-bedroom apartment. Find the area of the living room in square feet. Round to nearest square foot.
The dimensions of living room are 12' 4" x 19' 4"
On rounding off to nearest feet we get the area of the living room as 238 ft²
In the figure it is given that the dimensions of the living room are 12' 4" x 19' 4". This means that the dimensions are:
12 ft 4 in x 19 ft 4 in
To get the area in feet, we need to convert the dimensions into feet. This can be done by using the conversion factor that 1 foot = 12 inch
So, 12 ft 4 in can be converted into feet as follows:
[tex]12\ \text{ft}\ 4\ \text{in} = 12\ \text{ft}\ + \frac{4}{12}\ \text{ft} = 12.333\ \text{ft}[/tex]
19 ft 4 in can be converted into feet as follows:
[tex]19\ \text{ft}\ 4\ \text{in} = 19\ \text{ft}\ + \frac{4}{12}\ \text{ft} = 19.333\ \text{ft}[/tex]
Now to calculate the area we multiply the dimensions of the living room (as the living room is a rectangle and area of rectangle is product of its length and breadth):
[tex]area = 12.333 \times 19.333 =238.433889[/tex] ft²
On rounding of to nearest feet we get the area as 238 ft². So, the area of the living room is 238 ft²
The planet Mercury orbits around the sun at 29.74 miles per second. How many miles will mercury travel in 1 minute?
The perimeter of a rectangle is 99 inches. It’s width is 11 inches. What is the length of the rectangle? Solve algebraically and arithmetically.
What does it mean to say that a shape has an area of 8 square inches?
Final answer:
To say a shape has an area of 8 square inches means the shape covers 8 units of square inches. For similar shapes, the area comparison is the square of their scale factor; hence, if one shape's dimensions are twice another's, its area is four times larger.
Explanation:
When it is said that a shape has an area of 8 square inches, it means that the surface enclosed by the shape covers 8 units of square inches. In other words, you could fit 8 squares, each measuring 1 inch by 1 inch, inside the shape without overlapping or leaving any space inside the shape uncovered. To understand how the area of similar shapes compares, we can look into the problem involving two squares.
Marta has one square with a side length of 4 inches. A similar square has dimensions that are twice as large, meaning its side lengths are 8 inches. The area of the smaller square can be calculated as 4 inches x 4 inches, which equals 16 square inches. The area of the larger square would be 8 inches x 8 inches, resulting in 64 square inches. The ratio comparing the two areas is 64:16, which simplifies down to 4:1. This shows that the larger square's area is four times greater than that of the smaller square.
An area of 8 square inches means the shape covers a space equivalent to eight 1-inch by 1-inch squares.
To say that a shape has an area of 8 square inches means that the amount of space enclosed within the boundaries of the shape is equivalent to the area of eight 1-inch by 1-inch squares. Imagine a piece of graph paper where each small square is 1 inch by 1 inch.If the shape could be perfectly copied onto the graph paper, you would find that it covers eight of those squares.For example, an area of 8 square inches could be visualized by a variety of shapes: a rectangle measuring 2 inches by 4 inches or even an irregular shape that neatly fits inside the same area.In mathematics, there are various ways to calculate the area depending on the shape. For regular shapes like rectangles and circles, formulas are often used. But the fundamental idea of area — the measure of the space inside a shape — remains the same.5 x 70 = 5 x _____ tens
= ____tens = _____
A disc jockey must allow time for 24 minutes of commercials every hour, along with 4 minutes for news, 3 minutes for weather, and 2 minutes for public-service announcements. If each record lasts and average of 3 minutes, how many records per hour can the DJ play?
I need help Asap!! Please!!
Line v passes through point (6, 6) and is perpendicular to the graph of y = 34x – 11. Line w is parallel to line v and passes through point (–6, 10). Which is the equation of line w in slope-intercept form?
Answer:
y = -1/34 . x + 167/17
Step-by-step explanation:
The slope-intercept form of a linear equation is:
y = m.x + b
where,
m is the slope
b is the y-intercept
Line v is perpendicular to the graph of y = 34 x - 11. If 2 lines are perpendicular, the slope of one is the inverse and opposite of the other. Then, the slope of v is -1/34.
Line w is parallel to line v. When 2 lines are parallel, they have the same slope.
The equation of w is:
y = -1/34 . x + b
Lines b passes through the point (-6, 10). We can replace this ordered pair in the previous equation to find the value of b.
10 = -1/34 . (-6) + b
b = 167/17
The equation of w is:
y = -1/34 . x + 167/17
In the scale used on a blueprint, 1/4 inch represents 3 feet. On the blueprint, what is the length of a room with an actual length of 24 feet.
find two numbers the quotient is between 67÷4
Mrs. Santos is buying binders for the students in her class. She determined that 15 binders would cost $22.50.If all of the binders cost the same amount, which statement is true?
It will cost $12 for 18 binders.
It will cost $20 for 30 binders.
It will cost $42 for 28 binders.
It will cost $48 for 48 binders.
Answer:
Option C It will cost $42 for 28 binders
Step-by-step explanation:
Mrs. Santos determined that 15 binders would cost = $22.50
Therefore, 1 binder would cost = $1.50
Now we calculate each statement :
a. 18 binders will cost $12
= 18 × $1.50 = $27.00 (not correct)
b. 30 binders will cost $20
= 30 × $1.50 = $60.00 (not correct)
c. 28 binders will cost $42
28 × $1.50 = $42.00 (Correct)
d. 48 binders will cost $48
48 × $1.50 = $72.00 (not correct)
Option C It will cost $42 for 28 binders would be correct.
Which value of r indicates a stronger correlation: r equals=0.828 or r equals= −0.879? explain your reasoning?
A value of r = 0.828 indicates a stronger positive correlation, while r = -0.879 indicates a stronger negative correlation.
Explanation:A stronger correlation is indicated by a value closer to 1 or -1. In this case, r = 0.828 indicates a stronger positive correlation, whereas r = -0.879 indicates a stronger negative correlation. The closer the absolute value of r is to 1, the stronger the correlation. A value of r = 0.828 suggests a strong positive relationship between two variables, while a value of r = -0.879 suggests a strong negative relationship.
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Which statement is true about this argument? Premises: If a triangle has an angle that measures 150°, then it is an obtuse triangle. △JKL is an obtuse triangle. Conclusion: △JKL has an angle that measures 150°.
A) The argument is not valid because the premises are not true.
B) The argument is valid by the law of syllogism.
C) The argument is not valid because the conclusion does not follow from the premises.
D) The argument is valid by the law of detachment.
Jacqueline leaves city a at 2:00 p.m. and drives at a constant speed, traveling west on i-90. she passes city b, 40 mi from city a, at 2:50 p.m. (a) find a linear function d that models the distance (in mi) she has traveled after t min.
Jacqueline's speed is 0.8 miles per minute. The linear function representing the distance she has traveled in t minutes is d(t) = 0.8t. This equation means Jacqueline would have covered 0.8t miles after any given time t.
Explanation:The subject of this question is a linear function in mathematics, more specifically, it is about the concept of speed and distance. The question describes the journey of a person named Jacqueline who is traveling at a constant speed.
Given that city B is 40 miles from city A and it took Jacqueline 50 minutes to cover that distance, we can easily calculate her speed. Speed = Distance / Time. Therefore, her speed is 40 miles / 50 minutes = 0.8 miles per minute.
The linear function d, which models the distance she has traveled after t minutes would, therefore, be d(t) = 0.8t. The coefficient 0.8 indicates the speed, and the variable t is the time spent traveling. So, after any given number of minutes t, Jacqueline would have covered 0.8t miles on her journey.
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