Mathematics College

Score: 0 of 1 pt
4 of 40 com-
3.1.11
The line graph to the right shows the number of students per teacher in public elementary and
secondary schools for the years 1998 through 2006,
Approximate the number of students per teacher in 1999,

Score: 0 Of 1 Pt4 Of 40 Com-3.1.11The Line Graph To The Right Shows The Number Of Students Per Teacher

Answers

Answer 1

Answer:

~ 17.4

Step-by-step explanation:

The number of students per teacher in 1999 is approximately 17.4  

Related Questions

A recent study has shown that 10% of computer science concentrators suffer from symptoms of Carpal Tunnel Syndrome. Researchers have developed a diagnostic test for this condition and in a recent trial, the test gave a positive result in 96% of the patients who were known to truly have Carpal Tunnel Syndrome.
a) For an initial version of the diagnostic test, the false positive rate (the percentage of people without Carpal Tunnel who incorrectly test positive) was 44%. If a student received a positive result from this test, what would be the posterior probability that they truly have Carpal Tunnel Syndrome?
b) The researchers believe their test will be practically useful if a positive result implies the student has Carpal Tunnel with at least 75% probability. What is the largest possible false positive rate that would achieve this accuracy target?

Answers

Answer:

1. 0.1951

2. 3.56%

Step-by-step explanation:

Probability of disease = 0.10

Probability of disease and positive = 0.96

1.

Probability of no disease and positive = 0.44

Probability of disease and positive result = 0.10x0.96/0.10x0.96+0.90x0.44

= 0.096/0.096+0.396

= 0.096/0.492

= 0.1951

2.

Probability of disease false positive result

P(disease|positive result)

= (0.10x0.96/0.10x0.96+0.90xP) >= 0.75

= 0.096/0.096+0.90p >= 0.75

We cross multiply

0.096 >= 0.75(0.096+0.90p)

0.096 >= 0.072 + 0.675p

0.096-0.072 >= 0.675p

0.024 >= 0.675p

P <= 0.03555

Therefore the largest possible false positive rate = 0.0356

= 3.56%

Little help here guy

Calculate volume

Answers

Answer/Step-by-step explanation:

Problem 1:

Radius = 4.8 cm

Height = 6 cm

Volume of cylinder (V) = πr²h

Plug in the values

V = π*4.8²*6 = 434.29 cm³

Problem 2:

Length of pipe = 26 cm

Internal diameter = 6.5 cm

Thickness = 0.5 cm

Pipe volume (V) = π(R² - r²)h

where,

R = Outer radius = ½(6.5) + 0.5 = 3.75 cm

r = inner radius = ½(6.5) = 3.25 cm

h = height = 26 cm

Plug in the values

V = π(3.75² - 3.25²)*26 = 285.88 cm³

Problem 3:

Volume the cylindrical paint can hold = 2.5 litres = 2.5*1000 = 2,500 cm³

Height (h) = 16 cm

Radius (r) = ??

Volume of cylindrical can (V) = πr²h

Plug in the values

2,500 = π × r² × 16

2,500 = 16π × r²

Divide both sides by 16π

2500/16π = r²

49.7 = r²

Take the square root of both sides

√49.7 = r

r = 7.05 cm (nearest hundredth)

Problem 4:

The section of the guttering is ½ of a cylinder

Diameter = 14 cm = 0.14 m

Radius = ½(0.14) = 0.07 m

Volume = 20 litres = 0.02 m³

Length (h) = ??

Volume of the guttering = ½(volume of cylinder) = ½(πr²h)

Plug in the values

0.02 = ½(π*0.07²*h)

0.02*2 = 0.0049π*h

0.04 = 0.0049π*h

Divide both sides by 0.0049π

0.04/0.0049π = h

2.6 = h (nearest tenth)

Length = 2.6 m

Problem 5:

Height of the smaller cylinder (h) = 13 cm

Radius of the smaller cylinder (r) = ½(7) = 3.5 cm

Volume of smaller cylinder = πr²h = π × 3.5² × 13 = 500.3 cm³

Volume of larger cylinder filled to a height of 5 cm = Volume of smaller cylinder

Thus:

Volume of cylinder filled to height of 5cm = 500.3 cm³

height (h) = 5

radius (r) = ???

Therefore,

500.3 = π × r² × 5

500.3 = 5π × r²

500.3/5π = r²

31.9 = r²

√31.9 = r

r = 5.6 cm (nearest tenth)

what’s the nth term of -5,-4,-1,4,11,20,31

Answers

Answer:

The nth term is n + odd numbers

Thank you and please rate me as brainliest as it will help me to level up

Jade only need 3 1/4 cans of paint

Answers

what else do you need help with

Answer:

whats the question?

Step-by-step explanation:

TRUE OR FALSE:
If 2x−5 = 13, then x=4

Answers

Answer:

False

Step-by-step explanation:

Add 5 to isolate varible to get 2x=18. Dived by 2 to get x=9.

factor polynomial 4x^2+4x+1

Answers

Answer:

(2x+1)^2

Step-by-step explanation:

Choose a system of equations with the same solution as the following system:

6x + 2y = −6
3x − 4y = −18

a) 8x + 4y = −4
17x + 2y = −28

b)12x + 4y = 12
21x + 2y = −36

c) 6x + 8y = −36
15x + 6y = −60

d)6x + y = 15
15x − y = −9

Answers

Answer: A. 8x + 4y = -4

                    17x + 2y = -28

Step-by-step explanation:

What is 4x-5x= x- 20

Answers

Answer: the answer is x=10

Answer:   −2x + 20 = 0

Step-by-step explanation:

What is the solution of the proportion x−1/2 = x−4/5 ?

Answers

This statement is false... what exactly did you mean because this is not a correct statement

15+9/2 leave your answer in fraction​

Answers

15 can be 15/1 = 30/2
30/2 + 9/2 = 39/2

Sasha spent $7.00 of the $20.00 in her wallet. Which decimal represents the fraction of the $20.00 Sasha spent?

Answers

Answer:

0.7

Step-by-step explanation:

Answer:

0.35

Step-by-step explanation:

Is 1 and 2/3 equal to 3divided by5

Answers

Answer:

sdfdfds

Step-by-step explanation:

Answer:

no

Step-by-step explanation:

3 divided by 5 is the same as 0.6

Here is my question
Which statement can be used to classify this triangle as an isosceles triangle?
Angle F is a right angle.


Sides DE and EF are congruent.


Sides FD and DE are congruent.


Sides EF and FD are congruent.

Answers

Answer:

Sides EF and FD are congruent

Step-by-step explanation:

an isosceles triangle has two sides that are congruent and the two sides need to meet at then angle that is different from the other two base angles

Answer:

Sides EF and FD are congruent

Estimate the area of the inregular shape. Explain your method and show your work.
Please help 100 points and brainliest

Answers

Estimation : 27.5 square units

From the above coordinates: a = 7 length units, b = 4 length units and h = 5 length units. Therefore, approximate area = [(7+ 4)/2]*5 = 27.5 square units.

Hope it helps.

Convert: 7 pt 1 c = [] c​

Answers

Answer:

Pint value is 1 and cup value is 1 pt = 2 c. Sorry if I am wrong!

Step-by-step explanation:

Find the probability of guessing correctly at least 6 of the 10 answers on a true-false examination.

Answers

Answer:

24%

i think

Step-by-step explanation:

Of the 64 people who answered "yes" to a question, 6 were male. Of the 70 people that answered "no" to the question, 8 were male. If one person is selected at random from the group, what is the probability that the person answered "yes" or was male?

Answers

Answer:

The probability that the person answered "yes" or was male is 0.537

Step-by-step explanation:

The union of events is equivalent to the disjunction "or". Given two events A and B, the union of events, denoted by A∪B, is defined as the event formed by all the elements that are in A or B. That is, the event A∪B is verified when one of the two or both occurs.

Considering two events A and B with probabilities P (A) and P (B), respectively, the probability of their union is given by:

P(A∪B)= P(A) + P(B) - P(A∩B)

In this case:

A: the person answered "yes" B: the person was male

So, being the probability calculated as the number of favorable cases divided by the total number of possible cases, then in this case it is known that the number of people who answered yes is 64, while the number of people who responded is not 70. Therefore , the total number of people who answered is equal to 64 + 70 = 134. So, the probability of answering yes is:

P(A)=[tex]\frac{64}{134}[/tex]=0.478

On the other hand, you know that out of 64 people who answered yes, the number of being male is 6. And out of 70 people who answered no, the number of being male is 8. So the probability that men answer yes is calculated as:

P (A∩B) =[tex]\frac{6}{134}[/tex]= 0.045

Finally, with the total number of men equal to 6 + 8 = 14, the probability of being male is:

P(B)=[tex]\frac{14}{134}[/tex] = 0.104

Then:

P(A∪B)= P(A) + P(B) - P(A∩B)

P(A∪B)= 0.478 + 0.104 - 0.045

Solving:

P(A∪B)= 0.537

The probability that the person answered "yes" or was male is 0.537

what is the answer to 7+1+10t

Answers

Answer:

18

Step-by-step explanation:

Which steps can be done to both sides of the equation to determine the value of x? 3.2 x - 9.6= 38.4

Answers

Answer:

add both sides ny 9.6 and divide both sides by 3.2, hope this helps!

4. What information do you need to classify quadrilateral EFGH as
a square?

Answers

opposite angles are congruent.
opposite sides are congruent.
adjacent angles are supplementary.
the diagonals bisect each other.

if a quadrilateral has four congruent sides and four right angles, then it is a square.

Answer:

i think area of quad=area of square(equal sides)

What is 727.526 in word form

Answers

Answer:

I believe that's a decimal point

Step-by-step explanation:

If yes then,

Seven hundred and twenty seven point five two six

Answer:

727.526 in word form is :Seventy-five thousand seven hundred and twenty-six

Step-by-step explanation:

hope this helps :)

What is the solution to x^6 – 6x ^5 + 15x ^4 – 20x ^3 + 15x^ 2 – 6x + 1 ≥ 0? x = 0 x = 1 all real numbers all real numbers except zero

Answers

Answer:

Answer: C all real numbers

Answer: All real numbers

Step-by-step explanation: Edge 2022

are the triangles congruent if so state how they are congruent.

Answers

Answer:

Step-by-step explanation:

They are congruent.

SSS

If f(x)=8x+16, then find f-1 (x)

Answers

if u mean f(-1)= 8x+16, then the answers is 8

at 4 pm charlie realizes he has half an hour to get to his grandmother's house for dinner? if his grandmother lives 40 miles away, how fast will charlie have to drive to get there on time?

Answers

Answer:

10 minutes

Step-by-step explanation:

Speed = distance ÷ time, so 40 ÷ 4 = 10

hope this helps :)

Order the numbers from least to greatest

Answers

Answer:

2 then the square root of 7 then 9.5

Step-by-step explanation:

Answer:

Step-by-step explanation:

√7,2,9.5

√7=2.645

So

Order the numbers from least to greatest is

2,√7,9.5 is the answer


Find the slope using the formula.
(-2, -9) and (-6, -6)

Answers

m = y1 - y2 / x1 - x2
m= -9 + 6 / -2 + 6
m= -3 / 4

The recently released iPhone XS Max comes in three different storage sizes: 64GB, 256GB, and 512GB. The price of the 64GB phone is $1,099. If prices were proportional to the phone's storage size, how much would the 256GB phone and the 512GB phone cost
Any help please

Answers

Answer:

iPhone XS Max: $1,249/256GB,

$1,449/512GB

Step-by-step explanation:

Got it !!!

Solve the equation 4(2x + 1) = 6x - 12
x=-13/2
x = -8
x = 8
X=11/2

Answers

4(2x+1)=6x-12

4(2x)+4(1)=6x-12

8x+4=6x-12

2x+4=-12

2x=-16

2x/2=-16/2

x=-8

Plz help will mark Brainliest What is the length of BC

Answers

Is this a test? Cause im pretty sure this is cheating

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