Kozol notices the stress on the 3,300 kids at Fremont during lunch, when the entire meal is provided in a single 30-minute period. One teacher estimates that the lengthy distance to the cafeteria and the lengthy queues for food provide children a 10-minute window during which to eat. As a result, many students frequently skip meals entirely (176).
Given,
Lunch was served to the pupils in this school in a single sitting, unlike the staggered luncheon sessions I saw at Walton High. 3,300 children cannot be fed at once due to physical limitations, the teacher explained. "The session lasts barely 30 minutes, and there is a very large line for children to obtain their food. They must wait in line for fifteen minutes before they can even walk there from their classes. They most likely have 10 minutes to eat their food. Many of them don't even try.
You've worked as a teacher, so you know what it's like for students to go a whole day without eating. Here at Fremont, the school day lasts eight hours.
Here,
Kozol notices the stress on the 3,300 kids at fremont during lunch, when the entire meal is provided in a single 30-minute period. One teacher estimates that the lengthy distance to the cafeteria and the lengthy queues for food provide children a 10-minute window during which to eat. As a result, many students frequently skip meals entirely .
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Given question is incomplete. Completed question is here;-
Unlike the staggered luncheon sessions I observed at Walton High, lunch was served in a single sitting to the students in this school. "It's physically impossible to feed 3,300 kids at once," the teacher said. "The line for kids to get their food is very long and the entire period lasts only 30 minutes. It takes them 15 minutes just to walk there from their classes and get through the line. They get 10 minutes probably to eat their meals. A lot of them don't try. You've been a teacher, so you can imagine what it does to students when they have no food to eat for an entire day. The schoolday here at Fremont is eight hours long."
From Kozol, Jonathan. The Shame of the Nation: The Restoration of Apartheid Schooling in America. New York: Crown, 2005. Print. The passage appears on page 176.
a manufacturer knows that their items have a normally distributed lifespan, with a mean of 3.1 years, and standard deviation of 0.5 years. the 10% of items with the shortest lifespan will last less than how many years? give your answer to one decimal place.
The shortest lifespan will last less than 2.5 years.
What is standard deviation?
The standard deviation is a statistic that expresses how much variance or dispersion there is in a group of numbers. While a high standard deviation suggests that the values are dispersed throughout a wider range, a low standard deviation suggests that the values tend to be close to the established mean.
First, we must utilize the conventional normal table to determine the value for z if 10% of the region (probability) to its left will be present. We can observe that about z = -1.282.
Now, we have to find the value of x, that corresponds to the value of z.
Since,
(x - μ) / σ = z
(x - 3.1) / 0.5 = -1.282
x = 2.459
Hence, the shortest lifespan will last less than 2.5 years.
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You solve a system of equations in which x represents the number of adult memberships sold and y represents the number of student memberships sold. Can ( 6, 24) be the solution of the system? Explain your reasoning.
Answer:
picture please
Step-by-step explanation:
pic please
[tex]x\sqrt{2} +3=-2[/tex]
Value of x for the given expression x√2 + 3 = -2 is equal to (- 5√2)/2.
As given in the question,
Given expression is equal to :
x√2 + 3 = -2
Simplify the given expression x√2 + 3 = -2 to get the value of x we have,
x√2 + 3 = -2
Subtract 3 from both the side of the given expression we get,
x√2 + 3 - 3 = -2 - 3
⇒ x√2 + 0 = -5
Divide by √2 from both the side of the expression,
x√2/√2= -5/√2
⇒x = -5/√2
Multiply and divide by √2 on right-hand side we get
⇒ x = -5√2/ (√2×√2)
⇒ x= -5√2/2
Therefore, value of x for the given expression x√2 + 3 = -2 is equal to
(- 5√2)/2.
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Evaluate (-3 1/3) ^2 ( Need this by tomorrow, but that depends on time :] )
Answer:
[tex]33\frac{1}{3}[/tex]
Step-by-step explanation:
square is just multiplying things twice
(-3 1/3)(-3 1/3)
(-10/3)(-10/3)
100/3
33 1/3
Hopes this helps
Answer: 1
Step-by-step explanation:
(-3 1/3)= (-1/3)+(-1/3)+(-1/3) = -1
(-3 1/3)^2 = (-1)^2 = (-1)(-1) = 1
the 3 conditions for sampling distributions must be met in order to calculate p-hat. group of answer choices true false
The correct answer is False because, If the sample size is large enough (n greater than or equal to 30) the sampling distribution is approximately normal regardless of the shape of the population.
The sample fraction, often called the "p-hat", is the ratio of the number of sample successes to the size of the sample. The standard deviation of (p) decreases as the sample size n increases. This is because n is included in the denominator of the standard deviation formula. That is, (p has) has fewer variables for larger samples. The P-hat (must be a lowercase p with a caret (^) circumflex) indicates the percentage of the sample (this is the x-bar, the average of the samples).
A p-hat (proportion) sampling distribution is a collection of equal-sized repeated sample proportions drawn from the same population to represent it. According to the central limit theorem, the sampling distribution of p-hat is approximately normally distributed for large sample sizes.
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Question 3(Multiple Choice Worth 2 points)
(01.07 LC)
Simplify the given expression below:
(3+4i)+(5-2i)
0-2+6i
02-2i
07+3i
08+2i
15 POINTS PLEASE HELP
The data in the table describes the preferred type of exercise of 9th graders.
Cycling Running Swimming Row Totals
Boy 12% 18% 16%
Girl. 14%. 21%. 19%
Column Totals blank blank 100%
Find the marginal relative frequency for students who prefer cycling as their preferred type of exercise.
12%
14%
26%
39%
Answer: its (C) 26%
Step-by-step explanation:
its easy you just have to do addition
Marginal relative frequency are the column totals and row totals without the 100% there, so basically all the blank spaces are marginal relative frequencies
And to calculate the marginal relative frequency for students who prefer cycling as their preferred type of exercise is 12% +14% = 26%
I also do flvs so believe me
Answer:
26, C
Step-by-step explanation:
I did the quiz
Four siblings have a dog walking business. The table shows the hours worked by each sibling. Each sibling earns $25.50 per hour and the total number of hours worked is represented by 10h+15 , where h represents the number of hours Michael worked.
The total amount of money the siblings earned is equal to $1504.5.
How to determine the total amount the siblings earned?From the information provided, the total number of hours worked is represented by this mathematical expression:
10h + 15
where:
h represents the number of hours Michael worked.
Next, we would determine the number of hours Michael worked by summing up all of the total number of hours worked by each of the four siblings and equating it to the total number of hours worked:
2.5(h + 3) + 4(h - 2) + 31 + h = 10h + 15
7.5h + 26 = 10h + 15
10h - 7.5h = 26 - 15
2.5h = 11
h = 4.4 hours.
For the total number of hours worked by each of the four siblings, we have:
Total hours = 10h + 15
Total hours = 10(4.4) + 15
Total hours = 44 + 15
Total hours = 59 hours.
At a rate of $25.50 per hour, the total amount the siblings earned is given by:
Total earnings = $25.50 × 59
Total earnings = $1504.5.
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Complete Question:
Four siblings have a dog walking business. The table shows the hours worked by each sibling. Each sibling earns $25.50 per hour and the total number of hours worked is represented by 10h + 15 , where h represents the number of hours Michael worked. What was the total amount the siblings earned?
solve for the volume of the cylinders and sphere.
The volume of the cylinder with radius(r) 7 inches and height(h) 9 inches
is 1384.74 cubic inches.
What is a cylindrical shape?A cylinder is a three-dimensional solid object with two bases that are identically circular and are connected by a curving surface that is located at a specific height from the center.
Examples of cylinders are toilet paper rolls and cold beverage cans.
The volume of a cylinder is πr²h.
Curved surface area = 2πrh.
Total surface area = 2πr(h + r).
Given, a cylindrical shape of radius(r) 7 inches and height(h) 9 inches.
We know the volume of a cylinder is πr²h.
∴ The volume of this cylinder is
= π×(7)²×9 cubic inches.
= 441π cubic inches.
= 1384.74 cubic inches.
For the volume of a sphere, it is (4/3)πr³.
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What is 1/3 divided by 4/5?
Answer:
[tex]\frac{5}{12}[/tex]
Step-by-step explanation:
Step 1: Set up the problem
There are two ways to set up this problem.[tex]\frac{1}{3}[/tex] ÷ [tex]\frac{4}{5}[/tex][tex]\frac{\frac{1}{3} }{\frac{4}{5} }[/tex]Step 2: Solve
To solve the first set up you can use the keep, change, flip methodKCF: keep the first term, change from division to multiplication, flip the second term[tex]\frac{1}{3}[/tex] ÷ [tex]\frac{4}{5}[/tex][tex]\frac{1}{3}[/tex] × [tex]\frac{5}{4}[/tex] = [tex]\frac{5}{12}[/tex]To solve the second set up you multiply by the denominator's reciprocal[tex]\frac{\frac{1}{3} }{\frac{4}{5} }[/tex][tex]\frac{1}{3}[/tex] × [tex]\frac{5}{4}[/tex] = [tex]\frac{5}{12}[/tex]Once an antibiotic is given, number of bacteria decreases at a rate of 15%/day. There were about 15,000 bacteria prior to the treatment. The graph models the number of bacteria after x days of treatment. What are the key features of the exponential function modeled in terms of this situation and how can they be interpreted? Select each correct answer. 30 The line y = 0 is an asymptote of the graph. The x-intercept is 30. The line x = 0 is an asymptote of the graph. The asymptote indicates that there will never be more than 15,000 bacteria. The y-intercept is 15,000. The y-intercept represents the number of bacteria when treatment began. The asymptote indicates that as time increases, the number of bacteria approaches 0.
Answer:
The line y = 0 is an asymptote of the graph.
The y-intercept is 15,000.
The y-intercept represents the number of bacteria when treatment began.
The asymptote indicates that as time increases, the number of bacteria approaches 0.
Step-by-step explanation:
Took the test
james can go 144 miles with 12 gallons of gas in his truck.how far can he go on 17 gallons?
Answer:
425 Miles
Explaination:
Please give the brainliest.
What is the range of the data in how many teams complete the escape room this week
Please add an image or some more data.
The screening process for detecting a rare disease is not perfect. Researchers have developed a blood test that is considered fairly reliable. It gives a positive reaction in 97% of the people who have a disease. However, it erroneously gives a positive reaction for 5% of the people who do not have the disease. Consider the null hypothesis "the individual does not have the disease". What is the probability of type i error if the new blood test is used?.
The probability of type I error if the new blood test is used is 0.05
Given data;
It is not always possible to identify rare diseases by screening. A blood test that has been created by researchers is thought to be reasonably dependable. In 97% of those who suffer from a sickness, it produces a favorable response. However, 5% of those tested who do not have the condition received an incorrectly positive response. Take into account the null hypothesis that "the person does not have the disease."
The probability that the blood test report will be positive if someone has the disease = 0.97 The probability that the blood test report will be positive if someone does not have the disease is = 0.05
The null hypothesis is: "The individual does not have the disease."
The type I error occurs when we reject the null hypothesis, but it was true in reality.
Therefore, the probability of type I error = The probability that the blood test report will be positive if someone does not have the disease.
⇒ 0.05
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vera makes a table to help her find the area of the base of a rectangular box with a volume of 672 cubic inches and a height of 16 inches.
Answer:
Step-by-step explanation:
I am not sure
help me please.......................
the answer is (A) according to the cosine rule a^2=b^2+c^2-2(b)(c)cos(A)
Hailey is making floral centerpieces for a wedding. Each centerpiece has 17 flowers. She has 430 flowers for the project. She estimates that she can make between 20 and 30 complete centerpieces. Is her estimate reasonable?
Use your knowledge of place value and division to explain the reasonableness of her answer.
Nia knows that one apple bag and 6 kiwis cost $19.70.
She also knows that the same apple bag and 16 kiwis cost $43.7.
i.
What is the cost for each kiwi?
Answer:
each kiwi costs $2.40
Step-by-step explanation:
we set up our system of equations
x = bag of apples
y = kiwi
x + 16y = 43.7
x + 6y = 19.7
multiply any one of the equations by -1 to make x negative
-1(x+6y) = -1(19.7)
-x - 6y = -19.7
add the other equation and the new equation
-x - 6y = -19.7
x + 16y = 43.7
+ ____________
10y = 24
divide by 10 both sides
y = 2.4
we can also look for the cost of each bag of apples
plug in the y value to an original equation
x + 16(2.4) = 43.7
simplify
x + 38.4 = 43.7
subtract 38.4 from both sides
x = 5.3
There is a bag filled with 3 blue and 4 red
marbles.
A marble is taken at random from the bag,
the colour is noted and then it is not
replaced.
Another marble is taken at random.
What is the probability of getting at least 1
red?
The probability of getting at least 1 red marbles is 3/7.
What is probability?
Probability refers to potential. A random event's occurrence is the subject of this area of mathematics.The range of the value is 0 to 1. Mathematics has incorporated probability to forecast the likelihood of various events.Probability of getting at least one red = 1 − Probability of getting red marbles
Total number of marbles = 7
Probability of getting red marbles = 4/7
Probability of getting at least one red = 1 - Probability of getting red marbles
= (7-4)/7
= 3/7
Hence, The probability of getting at least 1 red marbles is 3/7.
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One moving company charges $19.85 plus $0.20 per mile to rent a van. The company also rents truck for $24.95 plus $0.17 per mile. At how many miles is the price the same for renting vehicles?
answer:19.8 should be the answer?
Step-by-step explanation:
19) If each side of
an equilateral
triangle is 4x+6 long,
what is the
perimeter of the
triangle in terms of
x?
you can refer to the explanation I wrote for you on paper since it is much easier... look at the pic uploaded
Which of the following are integers?
a. 9
b. 7
c. 0
d. 4
Answer: All of them are integer
Step-by-step explanation:
They are all integer.
Find the perimeter of the polygon with the vertices U-2, 4), (3, 4), and IP(3,-4). Round your answer to the nearest
hundredth. y’all please help
Perimeter of the polygon with given vertices is 22.43
Given:
Point 1 : (-2,4) ,
Point 2 : (3,4),
Point 3 :(3,-4)
Perimeter of a polygon = Sum of all the sides length of polygon
1. Length of Point 1 and point 2 = √[(x₂-x₁)²+(y₂-y₁)² ]
= √[(3+2)²+(4-4)² ]
= 5
2.Length of Point 1 and point 3 = √[(x₂-x₁)²+(y₂-y₁)² ]
= √[(3+2)²+(-4-4)² ]
= 9.43
3. Length of Point 2 and point 3 =√[(x₂-x₁)²+(y₂-y₁)² ]
= √[ (3-3)²+(-4-4)² ]
= 8
So, Perimeter of the polygon = 5+9.43+8
Perimeter of the polygon = 22.43
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I need help solving this problem!
The value of a is = 4/3.
From the given figure:
((3/4)a+4)3 = 15
(3a+4*4 / 4)3 = 15
(3a + 16 / 4)3 = 15
3a*3 + 16*3 = 15*4
9a + 48 = 60
9a = 60 - 48
9a = 12
divide by 9 on both sides
9a/9 = 12/9
a = 12/9
= 4/3.
Therefore the value of a is = 4/3.
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Figure I
A
12
11
10
9
8
5432
1
-12-11-10-9-876-5-4-3-2-1
--2
3
#8543456
-6
L
-8
9
-10
-11
-12
followed by a
Figure J
1 2 3 4 5 6 7 8 9 10 11 12
Answer:
need more clarification and need better picture
Step-by-step explanation:
plsssss
You are solving a measurement problem where the numbers 4.5160 x 10−3, 2.09 x 107, and 5.8 x 103 are multiplied. How many significant digits should the product have?
2
1
5
3
The number of significant digits that the product should have is; 2
How to express numbers in Scientific notations?Scientific notation is defined as a way of expressing a number as a number between 1 and to multiplied by a power of 10. This is usually in the form A * 10ⁿ
Where;
A is any real number between 1 and 10
n is any integer
When multiplying scientific notations, the final product must be to the scientific notation that has the least decimal place.
Since the least decimal place in the given measurement is 2, hence the significant digits the product should have is 2
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what is 3/5 times 6/7
Answer:
Step-by-step explanation:
Ok:
1. Straight out Multiplication. Denominator to denominator and numerator to numerator!
3/5*6/7=
18/35=
Answer: 18/35
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the unite rate of the ratio 12/5/3/10 is 8/1. Yes or no
Yes, the unit rate of the ratio 12/5/3/10 is 8/1 as per given in the problem.
What does unit rate mean?A unit rate is the price for one unit of a given quantity. With one as the denominator, we express this as a ratio. You would run 7 yards on average every second if you ran 70 yards in 10 seconds, for instance. The 70 yards in 10 seconds and the 7 yards in 1 second ratios are both rates, however the 7 yards in 1 second ratio is a unit rate.
Here, given that the unit rate for the ratio given is 8/1
We have to check whether the ratio is correct or not
So, (12/5)/(3/10)
=(12/5)×(10/3)
=8/1
Therefore, the ratio 8/1 is correct as per given in the sum
So, the answer is yes
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Factorise pm- pm + 3qm - 3qn
Answer:
3q(m-n)
Step-by-step explanation:
pm - pm + 3qm - 3qn
= 3qm - 3qn (pm-pm cancelled out such as 2x-2x=0)
= 3q(m-n)
A poster is to have an area of 200 square inches with 1 inch margins on the left and right sides, and 2 inch margins on the top and bottom. Varying the dimensions of the poster changes the area of the region inside the margins. What is the maximum area inside the margins?.
Using the Optimization problem solving strategy, the maximum area inside the margins is 108 inch².
Firstly , we can develope a function of two variables. let the length of poster be x inch and width be y inch.
total Area of poster (A ) = x × y = 200 inch² ---(1)
we have provided that bottom and top margin is 2 inch each and right -left margin is 1 inch each.
So, length of poster inside margin (l) = (x-4 ) inch
width of poster inside the margin (w) = (y-2) inch
Area inside the margins = l × w sq. inch
= (x-4)(y-2) sq.inch ---(2)
from (1) we can find out the value of one variable and put in equation (2) ,
from( 1), y = 200/x
Area inside margins= (x-4)(200/x - 2) = 2(x -4)( 100/x - 1) = 2( 100 - x - 400/x + 4)
Area inside margins = 2 ( -x - 400/x + 104)
To minimize the area inside the margins we take first order derivative of it
dA/ dx = d/dx[ 2( -x - 400/x + 104) ]
= 2 d/dx ( -x - 400/x +104) = 2 ( -1 + 400/x² )
critical points occurs when dA /dx = 0
2 ( -1 + 400/x² ) = 0 => 800/x² = 2
=> x² = 400 => x = 20
putting value of x in equation (1) we get ,
x×y = 200 = 20× y => y = 10
so, length of poster is 20 inch and width is 10 inch.
Now, length of poster inside margin (l) = 16 inch
width of poster inside margin (w) = 8 inch
maximum area inside margin is 108 inch².
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