Answer:
0.8015 = 80.15% probability that the student has the flu
Step-by-step explanation:
Conditional Probability
We use the conditional probability formula to solve this question. It is
[tex]P(B|A) = \frac{P(A \cap B)}{P(A)}[/tex]
In which
P(B|A) is the probability of event B happening, given that A happened.
[tex]P(A \cap B)[/tex] is the probability of both A and B happening.
P(A) is the probability of A happening.
In this question:
Event A: Has high temperature.
Event B: Has the flu
Probability of a student having high temperatures:
90% of 35%(have the flu)
12% of 100 - 35 = 65%(do not have the flu). So
[tex]P(A) = 0.9*0.35 + 0.12*0.65 = 0.393[/tex]
Probability of having high temperatures and the fly?
90% of 35%, so
[tex]P(A \cap B) = 0.9*0.35 = 0.315[/tex]
If a student has a high temperature, what is the probability that the student has the flu?
[tex]P(B|A) = \frac{P(A \cap B)}{P(A)} = \frac{0.315}{0.393} = 0.8015[/tex]
0.8015 = 80.15% probability that the student has the flu
the sum of two number is 50,and their difference is 30.find the numbers
Answer:
40 and 10
Step-by-step explanation:
if you add them you get 50 and if you subtract them you get 30
Answer:
40 and 10
Step-by-step explanation:
Let the bigger number = x
Let the smaller number = y
x+y=50
x-y=30
(add the equations)
(x+x)+(y-y)=(50+30)
2x=80
x=40
x+y=50
40+y=50
y=10
Which of the following points( X,Y) lies on the graph of 8X + 2Y = 24
Step-by-step explanation:
don't see any points to pick from however the following would lie on the graph
(0,12)
(1,8)
(2,4)
(3,0)
(4,-4)
5. In quadrilateral RSTW. diagonals RT and SW are perpendicular bisectors of
each other, Quadrilateral RSTW must be a
Rectangle Rhombus m. Square
a,
c. I and IN
d. 1. I, and I
Answer:
Rhombus and/or Square
4. 2x2 + 4x + 10 = 0
Answer:
Step-by-step explanation:
This doesn't factor. Not only that, but it does not give real results. The discriminate is negative.
a = 2
b = 4
c = 10
You could divide this equation by 2
a = 1
b = 2
c = 5
These three are smaller and easier to calculate. The answer will be the same.
x = (- b +/- sqrt(b^2 - 4*a*c ) / (2 a)
x = (-2 +/- sqrt(^2 - 4(1)*(5) ) / 2*1
x = (-2 +/- sqrt(4 - 20) ) / 2
X = (-2 +/- sqrt(-16) ) /2
x = (-2 +/- 4i ) / 2
x = ( - 1) +/- 2i
help me please with this answer I'm stuck
PLEASE HELP!!!!!
The model represents the quotient of two fractions.
Which equation does this model represent?
A. 5/6 ÷ 1/2 = 1 2/3
В. 2 1/2 ÷ 1/2 = 5/6
C. 5/6 ÷ 2 1/2 = 1/3
D. 2 1/2 ÷ 1/2 = 5
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Answer:
D.
Step-by-step explanation:
The shaded portion of the three large rectangles is 2 1/2 of them. The divisions indicated by the fractions at the bottom are 1/2. The figure shows that 2 1/2 can be divided by 1/2 with the result that 1/2 goes into 2 1/2 five times.
This description seems to match the equation of choice D.
I need help soo yah cna you help ne?
What is the median of the data set?
73, 20, 63, 23, 20, 40, 67
Answer:
40
Step-by-step explanation:
if you line the numbers up like so you will see the number in the middle is 40
aka the median
20,20,23,40,63,67,73
Find mHK.
pls hurry and answer lol
Answer:
mHK= 104
Step-by-step explanation:
X+39=4X
39 = 3x
X=13
13+39=4(13)
52=52
HK=52+52
mHK=104
HELPPP PLEASE AND NO LINKSSS PLEASE !!!!
Answer:
1. x=1/8 y+7/8
2. x=1/5 y + -14/15
Step-by-step explanation:
Sorry if I'm wrong
Answer:
X=2/3 Y=?
Step-by-step explanation:
Y=8x-7 and y=5x+14
put the Y's together then solve for X
Then plug in X in the equation
Hope it helps
HELP MATH QUESTION!!!!
Answer:
Keep it up
Step-by-step explanation:
Your teacher is nice for posting it to you iif you can not solve again brick it to me and followed me
Which of the following is not a measure of central tendency?
A. Mean
B. Median
C. Range
D. Mode
Answer:
C
Step-by-step explanation:
C is the answer becasue range is not classified as a measure of central tendency
A pair of shoes is on sale for $66.00. This is 75% of the original price. What was the original price?
Answer:
$88.00
Step-by-step explanation:
66=3/4x
66/.75=66*4/3=88
For a quadrilateral to be a rhombus, the diagonals __ and __.
Blank one options:
must be congruent
must not be congruent
can be congruent or not congruent
Blank two options:
must be perpendicular
must not be perpendicular
can be perpendicular or not perpendicular
Can someone please help.
Answer:
26 degrees :)
Step-by-step explanation:
The Westminster Widget Company has an old machine that can produce 24 widgets in three hours. Now they have purchased a new
machine that can produce 48 widgets in four hours. Working together, how long will it take the two machines to produce 120
widgets?
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Answer:
6 hours
Step-by-step explanation:
The old machine produces widgets at the rate of ...
(24 widgets)/(3 h) = 8 widgets/h
The new machine produces widgets at the rate of ...
(48 widgets)/(4 h) = 12 widgets/h
The total rate of production of the two machines is ...
(8 +12) widgets/h = 20 widgets/h
Then the time required to produce 120 widgets is ...
(120 widgets)/(20 widgets/h) = 6 h
Working together, the two machines can produce 120 widgets in 6 hours.
Answer:
6
Step-by-step explanation:
took the test
Help me please this is due tonight!
Here is a photo of the problem. I’m a little blank on my math tonight, any help is appreciated!
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Answer:
A
Step-by-step explanation:
The applicable rules of exponents are ...
(a^b)(a^c) = a^(b+c)
(ab)^c = (a^c)(b^c)
(a^b)^c = a^(bc)
__
Using these rules, along with the distributive property, we can simplify the given expression.
[tex]\displaystyle 9a^3b^6(3a^3b^2+7a^2b^2)-(5a^4b^4)^2\\\\=\displaystyle 9a^3b^6(3a^3b^2+7a^2b^2)-(5^2a^{4\cdot2}b^{4\cdot2})\\\\=(9)(3)a^{3+3}b^{6+2}+(9)(7)a^{3+2}b^{6+2}-25a^8b^8=27a^6b^8+63a^5b^8-25a^8b^8\\\\=\boxed{-25a^8b^8+27a^6b^8+63a^5b^8}\qquad\text{matches A}[/tex]
You go to the quad on a windy day to fly a kite. You have released 40 feet of string. The string makes an angle of 36° with the ground. How high is the kite in the air? Round your answer to the nearest tenth. Show your work!.
Answer:
23.51m is the height
Step-by-step explanation:
the kite creates a triangle. 40•sin(36°) = 23.51141009 and round it to 23.51
find area,of the triangle
digits only. I counted the lines, 7 and 12 ÷2. and it was wrong
Answer:
33 units²
Step-by-step explanation:
1/2(11 x 6) = 33 units²
Which fractions equal the whole number 3?
Answer:
9/3=3
Step-by-step explanation:
3 goes into 9 3 times
3,6,9
The sequence below shows the
number of cells in a sample at
the end of the four hours. 6, 12,
24, 48, which recursive formula
models the sequence?
Answer:
Step-by-step explanation:
Option B 2. Now is the correct answer because when we multiply 6 by 2 we get 12 then we multiply 12 by 2 we get 24
factor the linear expression 24y - 40 using the greatest common factor of the terms
Find the measurement of angle P.
a=5 (the fifth try) The amount of time Chip took to run through the maze on the 5th try can be modeled by t = 0.5a2 - 9a + 48.5 where t = time in seconds. Variable a=5, and then calculate the time t. Compare your time to others. Is it higher or lower? Why?
Answer:
lower
Step-by-step explanation:
Find the surface area of the prism.
15mm 10mm 8mm
A. 320 mm2
B. 400 mm2
C. 494.2 mm2
D. 502 mm2
It takes ⅙ of a yard of ribbon to make one bow. How many bows can be made with 4 yards of ribbon?
Answer:
24 bows can be made with 4 yards of ribbon
Please help, test due in 1 hour! I will give brainliest!
Answer:
Soooooo, for Part A I got answer choice D.
I didn't want to overthink it like I normally do with everything else in life so i was like, there are 3 boxes on the side and 4 boxes on the bottom, so 3 times 4= 12.
Now i know that the area of the neighborhood is 12 blocks and 20 blocks equals a mile. 12 is obviously not 20, twelve is actually a little bit over half of twenty or .50%, so the best answer would be D.60%.
Now part B, i dont know bout all that, I can only give you half an answer. Copped out at the mention of the word Density XD. Hope that first part helped tho.
Please Help!!!!!!
I need the answer ASAP!
all parallelogram are rectangle?true or false
Answer. False... All rectangles are parallelograms.
I hope this helps! I would really appreciate it if you would please mark me brainliest! Have a blessed day!
Answer: False
Step-by-step explanation:
Parallelogram does not include some of rectangle's property
Having four congruent anglesHaving congruent diagonalsIf you need a more graphical explanation, refer to the attachment below.
Riley purchased a 30-day International cell phone plan for use during winter break. There is a one-time fee of $35 and it includes 150 MB of data usage. Each extra megabyte,
or part thereof, of data costs $0.28. Find the cost of the plan if he uses 388 MB of data during the trip.
Answer:
the cost of the plan in the case when 388MB is used is $101.64
Step-by-step explanation:
The computation of the cost of the plan in the case when 388MB is used
Given that
One time fee is $35
And, it involves 150 MB of data usage
Also for the extra megabyte it charges $0.28
So for 388MB, the cost of the plan is
= $35 + 0.28 × (388 MB - 150 MB)
= $35 + $66.64
= $101.64
Hence, the cost of the plan in the case when 388MB is used is $101.64