Answer:
A measure of exposure-disease association one could use is the odds ratio (OR)
Step-by-step explanation:
An Odds ratio (OR) is a statistical measure quantifying the level of association between two events such as an exposure and an outcome
The odds ratio gives the probability of outcome where there is a given amount of exposure
We have the table;
[tex]\begin{array}{ccc}&Developed \ lung \ cancer& Did \ not \ develop \ lung \ cancer\\Smokers&50&350\\Non-smokers&10&590\end{array}[/tex]
The odds ratio = (The number of smokers with the lung-cancer)/(The number of non-smokers with lung-cancer) ÷ (The number of smokers smokers without long cancer).(The number of non-smokers without long cancer)
∴ OR = (50/10) ÷ (350/590) = 59/7 = 8.[tex]\overline{428571}[/tex] ≈ 8.4
Therefore, a smoker is approximately 8.4 times more likely to develop lung cancer than a non-smoker.
tell whether the angles are complementary or supplementary. Then find the value of x
Answer:
12) complementary, x=15
13) complementary, x = 35
x+ (x-20) = 90
x+x+20=90
2x=70
x=35
14) supplementary, x=31
2x+3x+25=180
5x=155
x=31
15) <1 = 130 degrees
<2 = 50 degrees
<3 = 130 degrees
16) x=53
x+2x+21=180
3x=159
x=53
Work out the area of this quarter circle of radius 8 cm.
Give your answer in terms of pie .
Answer:
[tex] 16\pi \: {cm}^{2} [/tex]
Step-by-step explanation:
[tex]A = \frac{90 \degree}{360 \degree} \times \pi ({8})^{2} \\ \\ A = \frac{1}{4} \times \pi \times 64 \\ \\ A = \frac{1}{4} \times 64\pi \\ \\ A =16\pi \: {cm}^{2} [/tex]
Solutions of a Two-Variable Equation Tell whether the given ordered pair is a solution of the equation. 1. 4y + 2x = 3; (1.5, 0) 2. y= 7x - 5; (0,5) 3. y = - 2x + 5; (2, 1)
Answer:
1. yes 2. no 3. yes
Step-by-step explanation: (put this if you have to show your work)
1. 4*0+2*1.5 (solve with a calculator or by hand)
2 y*5=7*0-5(same as above solve with a calculator or by hand)
3. 1=-2*2+5(same as above solve with a calculator or by hand)
Terri gets most of her exercise by walking briskly. Last year she walked an average of 4.2 miles per day with a standard deviation of 1.2 miles per day. April swims for exercise last year she swam for a mean of 40 minutes per day with a standard deviation of 8 minutes per day. For the new year, both girls have resolved to exercise more. In January Terri walked an average of 6 miles per day while April swam for an average of one hour per day. Which girl is off to a better start relation to their results from the previous year?
Terri walked in her own 93rd percentile, while April swam in her own 99th percentile. April is off to a slightly better start.
The price of BZG CO's stock is tracked over several days, as displayed in the table below. Based on the data given, what linear equation can be used to predict the price of this stock in the future? Round the variables to 3 decimal places.
Answer:
Y= 1.165x18.703
And the equation from the previous problem to predict the price BZG stock on day 30 is y=1.165(30) + 18.703 -$53.65
The altitude of a plane is 1200 meters. From a point on the ground, the angle of elevation of an airplane is 25º. What is the distance from point P to the airplane, to the nearest tenth of a meter? Explain your answer.
Answer:
2839.4 meters
Step-by-step explanation:
Given that:
Altitude = 1200 m
Using trigonometry :
The distance from point P to the airplane :
Using trigonometric relation :
Sin θ = opposite / hypotenus
Sin θ = altitude / x
Sin θ = 1200 m / x
Sin 25 = 1200 / x
0.4226182 = 1200 / x
x = 1200 / 0.4226182
x = 2839.4423
Distance from P to airplane = 2839.4 meters
Please show work
I'll give brainliest
Answer:
7
Step-by-step explanation:
a right angle is 90 degrees so
90=76+2x subtract 76 from both sides
-76 -76
________
14=2x divide 2 from both sides
_ ___
2 2
7=x
Check:
76+(2*7)=90 correct
Answer:
x=7
Step-by-step explanation:
76°+2n=90°
2x=90-76
[tex] \frac{2x}{2} = \frac{14}{2} [/tex]
[tex]x = 7[/tex]
hope it helps...
A loggerhead sea turtle decided to swim to grab some lunch! She swam 4 miles west and 3 miles south until she stopped and found a delicious crab to eat. What is the distance between the sea turtle's start point and where she found the crab? Round to the nearest tenths place, if necessary.
Answer:
5 miles
Step-by-step explanation:
The Pythagoras theorem : a² + b² = c²
where a = length = 4
b = base= 3
c = hypotenuse
4² + 3²
16 + 9 = 25
√25 = 5
What are the roots of the quadratic?
a) -3 and 0
b) -3 and 1
c) -1 and 3
d) -1 and -3
Which equation best represents the relationship between x and y shown in the table.
Answer:
the answer is D) y=2x+2
as
2=2*0+2
10=2*4+2
18=2*8+2
hope this helps
A laptop carry bag cost $30. The total cost will include an 8% sales tax. Which expression can be used in calculating the total cost with tax?
A. 0.8(30)
B. 1.08 (30)
C. 0.08 (30)
D. 1.8 (30)
The price of a skateboard is reduced by 25%. The original price was $120. Find the new price.
Answer:
New price = 90 dollars
Price is reduced 25% from 120 so,
120 - 30 = 90
Amount of discount = 30
A data set is shown below. { 0 , 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 } Which of the following best represents a measure of center for the values in this data set?
Answer:
51
Step-by-step explanation:
I NEED THIS ASAP!!
The average length of a female dolphin is about 171 inches (in). What is this length in feet (ft) and inches (in)?
Answer:
14.25ft
171 in
Step-by-step explanation:
Describe the error in the work shown.
anybody know the answer to this?
which of the following equations represents a line that passes through the points
Answer:
C) I only
Step-by-step explanation:
( -1, -2) and (0,4)
Slope:
m=(y2-y1)/(x2-x1)
m=(4+2)/(0+1)
m=6/1
m=6
Slope-intercept:
y - y1 = m(x - x1)
y + 2 = 6(x + 1)
y + 2 = 6x + 6
y = 6x + 4
y - 16 = 6(x - 2)
y - 16 = 6x - 12
y = 6x + 4
Michelle sells umbrellas. 2 9 of her umbrellas are blue, the rest are red. 5 11 of the red umbrellas have plastic covers. What fraction of the Michelle's red umbrellas that do not have plastic covers?
Answer: 14/33
Step-by-step explanation:
Since 2/9 of the umbrella are blue, the fraction for red umbrellas will be:
= 1 - 2/9
= 7/9
Since 5/11 of the red umbrellas have plastic covers. The fraction for those without plastic covers will be:
= 1 - 5/11
= 6/11
Therefore, the fraction of Michelle's red umbrellas that do not have plastic covers will be:
= 6/11 × 7/9
= 42/99
= 14/33
Which statement is correct
Answer:
I think its a
Step-by-step explanation:
because 1/5 as a decimal is 0.2 and 0.3 is great then 0.2
Can you guys help me with this problem
It is the picture
Answer:
Mulipte them
Step-by-step explanation:
for the 15 ft look at the other side which is 50 ft and do 50-15 to see what is the other missing part
Please help will mark brainliest
What is the answer and can you please explain how to do the work.
Answer:
28in
Step-by-step explanation:
you cut the face in shapes you recognize how to do the area of. Then find the numbers of the shapes that might be missing, then add them all up.
I see a rectangle, square, and square.
A = 10×2
A = 20in
A = 2x2
A = 4
A = 2x2
A = 4
add the areas up you get 28in
Failing please please
Answer:
A = 102m squared (Brainiest?)
Equation = b x h / 2
Step-by-step explanation:
A = (12 x 17) / 2
A = 204 / 2
A = 102m squared
A 1,500-gallon hot tub is at a temperature of 38°C. Then, the hot tub's thermal energy increases. Assume its mass does not change.
Which is a possible new temperature for the hot tub?
ANSWER IS 37
Answer:
40⁰ C
Step-by-step explanation:
As long as the number is higher than 38⁰ C, it is a valid answer. as long as its not anything crazy like 111846284⁰ C. But anything around 40⁰ C would be a valid answer as long as the temperature is higher. mass doesn't matter. They are trying to trick you with the question lol
Be sure to clearly label each part of your response as Part A, Part B, and Part C.
Part A: If the product of x and 3 is y, write an equation to represent the relationship between the two variables.
Part B: Explain your work in Part A.
Part C: Create a table of values to display five solutions to the equation. Write the solutions as ordered pairs.
Answer:
Part A: y = 3x
Part B: The relationship of y to x is y is 3 times as much as x.
Part C: (0,0), (1,3), (2,6), (3,9), (4,12)
Step-by-step explanation:
Part A: The product of x and 3 (3 times x) is (equals) y. So we can write this linear equation as y = 3x.
Part B: The linear equation is a representation of the relationship between y and x. Y is equivalent to three times x.
Part C: To create solutions to the linear equation, simply plug in a value of x to output a y.
x = 0 -> y = 3(0) = 0; (0,0)
x = 1 -> y = 3(1) = 3; (1,3)
x = 2 -> y = 3(2) = 6; (2,6)
x = 3 -> y = 3(3) = 9; (3,9)
x = 4 -> y = 3(4) = 12; (4, 12)
Cheers.
Find the circumference of the semi circle 7cm
Given:
A semicircle with radius 7 cm.
To find:
The circumference of the given semi circle.
Solution:
We know that,
Circumference of a semi circle = Half of circumference of the circle + Diameter
[tex]=\dfrac{1}{2}(2\pi r+d[/tex]
[tex]=\pi r+2r[/tex]
Putting [tex]\pi=\dfrac{22}{7},r=7[/tex], we get
Circumference of the semi circle [tex]=\dfrac{22}{7}(7)+2(7)[/tex]
[tex]=22+14[/tex]
[tex]=36[/tex]
Therefore, the circumference of the given semi circle 36 cm.
−6, −3, 2, 9, 18, . . . nth term
Answer:
Your answer would be
X^2-7
Step-by-step explanation:
Hope it helps .
Good luck .
PLEASE HELP!!!!!!!!!!!!!!!!!
Answer:
It is the fourth graph the line that is short and goes off the page
Step-by-step explanation:
Please help me I’ll mark brainliest!!!!
Answer:
Step-by-step explanation:
For the people that are trying to help me, is this good?
Answer:
369.03
Step-by-step explanation:
The figure is a pyramid with a rectangular base
The formula is A+1/2ps
A=130 (Area of the base)
p=46 (perimeter of the base)
s=15 (slant height)