The question is incomplete. The complete question is :
The National Center for Health Statistics reports that 25% of all Americans between the ages of 65 and 74 have a chronic heart condition. Suppose you live in a state where the environment is conducive to good health and low stress and you believe the conditions in your state promote healthy hearts. To investigate this theory, you conduct a random telephone survey of 25 persons 65 to 74 years of age in your state.
Suppose only one person in your survey has a chronic heart condition. What is the probability of getting one or fewer people with a chronic heart condition in a sample of 25 if 25% of the population in this age bracket has this health problem?
Solution :
Chronic heart disease is a condition where a person's heart have trouble to pump blood to the body. It develops over a period of time.
In the context, we can see from the figures from National Center for Health Statistics that the expected number of persons of age 65 - 74 years having a chronic heart disease is about
25 % of 25 = 6.25
Now by Poisson's ratio, the probability of choosing the sample where only one person having heart disease is 1.4%
is (85.76%) an C or B
Answer:
It is B.
Step-by-step explanation:
A C is anything between 73-76 %, while a B is anything between 83-86 %
week. After 5 weeks the account holds $170. Write an equation that represents the amount y
(in dollars) of money in the account after x
weeks.
For the functions f(t) = et and g(t) = e-6t, defined on 0 Le t Le infinity, compute f * g in two different ways: By directly evaluating the integral in the definition of f * g. (f * g) (t) = dw = By computing L-1 {F(s)G(s)} where F(s) = L{f(t)} and G(s) = L{g(t)}. (f * g)(t) = L-1 {F(s)G(s)} = L-1{ }
The value of the expression (f * g) by using two ways that is by direct integral and by Laplace transform is equal to (1/2)e^t/(1-t) - (1/2)e^t/(1+t) + C.
To compute the convolution of f(t) and g(t) by directly evaluating the integral in the definition of the convolution, we have:
(f * g)(t) = ∫f(w)g(t-w)dw
Substituting in the expressions for f(t) and g(t), we have:
(f * g)(t) = ∫e^w*e^(-6)(t-w)dw
This integral can be evaluated as follows:
(f * g)(t) = ∫e^(-5w)dw
(f * g)(t) = (-1/5)e^(-5w) + C
(f * g)(t) = (-1/5)e^(-5w) + C
To compute the convolution of f(t) and g(t) by computing the inverse Laplace transform of the product of the Laplace transforms of f(t) and g(t), we have:
F(s) = L{f(t)} = ∫f(t)e^(-st)dt = ∫e^t*e^(-st)dt = 1/(s-1)
G(s) = L{g(t)} = ∫g(t)e^(-st)dt = ∫e^(-6t)*e^(-st)dt = 1/(s+6)
Therefore,
F(s)G(s) = (1/(s-1))(1/(s+6)) = 1/(s^2-1)
To find the inverse Laplace transform of F(s)G(s), we use the following formula:
L^-1{F(s)G(s)} = ∫F(s)G(s)e^st ds
Substituting in the expression for F(s)G(s), we have:
L^-1{F(s)G(s)} = ∫(1/(s^2-1))e^st ds
This integral can be evaluated as follows:
L^-1{F(s)G(s)} = (1/2)e^st/(s-1) - (1/2)e^st/(s+1) + C
L^-1{F(s)G(s)} = (1/2)e^st/(s-1) - (1/2)e^st/(s+1) + C
Thus, the convolution of f(t) and g(t) can be computed either by directly evaluating the integral in the definition of the convolution or by computing the inverse Laplace transform of the product of the Laplace transforms of f(t) and g(t). In both cases, the result is:
(f * g)(t) = (1/2)e^t/(1-t) - (1/2)e^t/(1+t) + C
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X times 3+6 when X equals four
Step-by-step explanation:
4 x 3 + 6
12 + 6
= 18
or
4 x (3+6)
4 x 9
= 36
depends whether the 3+6 is in brackets :)
Answer:
if x = 4
then,
4 (3 + 6)
12 + 24
= 36
Depends whether they are in brackets but usually i would consider it in this problem.
Without the brackets would be:
4 x 3 + 6
12 + 6 = 18
What is the mean of swim club a and b
Answer:
257
Step-by-step explanation:
First you have to add all of them up then divide by how many there are:) good luck.
Answer:
Swim Club A: 30
Swim Club B: 50
Explanation:
Mean = Average of the numbers.
1. Add up all the numbers.
2.Divide by how many numbers there are.
Swim Club A:
15 + 20 + 25+ 30 + 35 + 40 + 45 = 210 210 ÷ 7 = 30Mean: 30Swim Club B:
35 + 40 + 45 + 50 + 55 + 60 + 65 = 350350 ÷ 7 = 50Mean: 50Find the constant of proportionality k if y = 27 when x = 3.
k =
Using the k from above find x given that y = 9.
y =
Using the k from above find x given that y = 9. Therefore, when y = 9, x is equal to 1.
We can use the formula for direct variation to find the constant of proportionality k:
Proportionality refers to the relationship between two variables where their ratio remains constant. In other words, as one variable changes, the other changes in proportion to it. This relationship is often expressed as a direct variation or an inverse variation.
Direct variation is a type of proportionality where the two variables increase or decrease at the same rate
y = kx
We are given that y = 27 when x = 3:
27 = k * 3
We can solve for k by dividing both sides by 3:
k = 27 / 3 = 9
So the constant of proportionality is 9.
Now, we can use this value of k to find x when y = 9:
y = kx
9 = 9x
Dividing both sides by 9, we get:
x = 1
Therefore, when y = 9, x is equal to 1.
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4x+25=57
valor de x por favor
Answer:
4x=8
Step-by-step explanation:
4x=32
32/4=8
Answer:
x=8
Step-by-step explanation:
4x+25=57
Subtract 25 from both sides:
4x+25-25=57-25
Simplify:
4x=32
Divide both sides by 4:
4x/4=32/4
Simplify:
x=8
f(x) = - 3x + 4; g(x) = f(x) + 1
Graph it and then describe the graph
The graph of function f(x) and g(x) is parallel lines separated by 1 unit.
In this question we have been given two functions f(x) = - 3x + 4 and g(x) = f(x) + 1
We need to graph these functions and then describe the graph.
The graph of given functions is as shown below.
The graph of function f(x) is a straight line with slope -3 and y-intercept 4.
The function g(x) is nothing but but function f(x) translated upward by 1 unit.
The graph of function g(x) is also a straight line with slope -3 and y-intercept 5.
Therefore, the graph of function f(x) and g(x) is parallel lines separated by 1 unit.
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A baker had additional flour at the end of the day. He uses 1/8 of a bucket of flour to bake two cakes. How much flour did he use to make one cake?
Answer:
0.0625
Step-by-step explanation:
You can convert this into a fraction by entering this into a calc
NEED ANSWER ASAP!!
How much water should be added to 18 mL of 15% alcohol solution to reduce the concentration to 9%?
8. The Garcias ate 9 pieces of toast for breakfast. If there are 33 slice of bread how many
o were in the loof of breade
"a number is no more than 26"
Answer:
1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25
Please need answer thanks
Answer:
Area of the shaded region= 4 units
Step-by-step explanation:
width (x-axis)= 3-1 = 2
length (y-axis) = 2-0 = 2
Area of rectangle= Length × Width
= 2 × 2 = 4
Twenty members of an athletic club are studying the relationship between the time it takes an individual athlete to reach a given level of fatigue during exercise (time to fatigue, measured in minutes) and athletic performance. For each member, time to fatigue and a performance score were recorded. The computer output of the regression analysis is shown in the table.
TermCoefSE CoefTConstant39.884.249.41Time to fatigue3.920.715.52
Which of the following is a 90 percent confidence interval for the slope of the regression line relating performance score and time to fatigue? Assume that the conditions for inference are met.
3.92±1.734(0.71)
The confidence interval for the slope of the regression line relating performance score is 0.71
sample size (n) = 20
slope (b1) = 3.92 and SE of slope = 0.71
Degrees of freedom = 20 - 2 = 18
Using t-table we get, t-critical value at significance level of 0.10 with 18 degrees of freedom is,
tα/2=1.734
The 90% confidence interval for the slope of the regression line relating performance score and time to fatigue is,
B1±Tα/2*SE
3.92±1.734(0.71) (c)
Regression analysis is a statistical measure that is used in many different fields, including investing, finance, sales, marketing, science, mathematics, and others. It tries to figure out how closely one dependent variable is related to a set of other changing variables. They are commonly referred to as independent variables.
For example, how commodity prices relate to the shares of companies that trade in those commodities.
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What is the slope of the line given by the equation below?
y-9 = 15(x - 5)
O A. -5
O B. 9
O C. -9
O D. 15
Answer:
D
Step-by-step explanation:
this would simplify, in slope-intercept form, as y= 15x - 66
(1,3) and (0,-2) written in slope intercept form
We are given the following points:
\(\begin{gathered} \mleft(1,3\mright) \\ \mleft(0,-2\mright) \end{gathered}\)To determine the slope-intercept form of the equation we need to use the following general form of a line equation:
\(y=mx+b\)Where "m" is the slope and "b" is the y-intercept. The value of the slope is given by the following formula:
\(m=\frac{y_2-y_1}{x_2-x_1}\)Where:
\(\begin{gathered} (x_1,y_1)=(1,3) \\ (x_2,y_2)=(0,-2) \end{gathered}\)Replacing in the formula for the slope:
\(m=\frac{-2-3}{0-1}\)Solving the operations:
\(m=-\frac{5}{-1}=5\)Replacing the value of the slope:
\(y=5x+b\)Now we replace the point (x,y) = (0,-2) to get the value of "b":
\(\begin{gathered} -2=5(0)+b \\ -2=b \end{gathered}\)Replacing in the equation of the line:
\(y=5x-2\)The drop down options are “greater than”, “less than”, and “equal to”
The length of FG is equal to the length of F'G'.
The perimeter of pentagon CDEFG is equal to the perimeter of pentagon C'D'E'F'G.
What are the properties of a translated shape?The properties of a translated shape are the shape and size of the translated shape are the same as that of the original shape. The orientation of the translated shape is the same as that of the original shape. The distance between the corresponding points of the translated shape and the original shape is constant.
The area and perimeter of the translated shape are the same as that of the original shape. The interior angles of the translated shape are the same as that of the original shape. The coordinates of the vertices of the translated shape are obtained by adding a constant value to the corresponding coordinates of the vertices of the original shape.
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Image transcribed:
Pentagon CDEFG is translated 7 units up and 5 units left, resulting in pentagon C'D'E'F'G' (not shown).
Part A
Select from the drop-down menu to correctly complete this sentence:
The length of FG is ___ the length of F'G'.
Part B
The perimeter of pentagon CDEFG is ____ the perimeter of pentagon C'D'EF'G.
A random sample of 40 college professors is selected from all professors at a university. The following list gives their ages.
64, 40, 45, 43, 33, 50, 47, 49, 42, 28, 55, 64, 55, 41, 65.
64, 50, 45, 51, 23, 35, 64, 43, 45, 37, 37, 47, 34, 27, 49,
62, 39, 35, 44, 23, 36, 42, 34, 32, 52.
D
The required leaves values for the given stems are calculated below.
What is Stem-and-Leaf plot?A plot where every information esteem is parted into a "leaf" (typically the last digit) and a "stem" (different digits). For instance "32" is parted into "3" (stem) and "2" (leaf). The "stem" values are recorded down, and the "leaf" values are recorded close to them.
For example , 42, 34, 48, and so on.
Here 42 and 48 qualities will be written in stem 4 as their most memorable digit is 4, while 2 and 8 will be placed in the leaf side.
Likewise, 3 will be the stem, and 4 will be the leaf for esteem 34.
4| 2, 8
3| 4
According to question:65, 40, 47, 47, 33, 55, 44, 49, 46, 22, 58, 65, 56, 41, 63, 65, 54, 42, 58, 29, 39, 66 , 49, 42, 34, 36, 42, 35, 21, 44, 61, 35, 33, 42, 27, 30, 46, 33, 35, 58.
As given in the question that the stem and Leaves are to be separated by a hyphen.
Stem-and-Leaf plot 6 - 5, 5, 3, 5, 6, 1
5 - 5, 8, 6, 4, 8, 8
4 - 0, 7, 7, 4, 9, 6, 1, 2, 9, 2, 2, 4, 2, 6
3 - 3, 9, 4, 6, 5, 5, 3, 0, 3, 5
2 - 2, 9, 1, 7
As we can see above there are 5 stems, where stem 6 has 6 leaves, stem 5 has 6 leaves, stem 4 has 14 leaves, stem 3 has 10 leaves, and stem 2 has 4 leaves.
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HELLLLLLPPPPPPPPO MEEEEEEEEE
Answer:
Volume = lwh
V = 1.6 x 2.8 x 3.2
V = 14.336
V = 14.3 cubed
Yellow is the right answer.
Trina has a college fund started with a deposit of $10,000 which earns 5% annually. If no other movies are deposited, how much money will Trina have in her fund at the end of three years?
The expression we would use to calculate the amount saved in the fund after t years is:
\(10000(1+0.05)^t\)For 3 years (t = 3),
\(10000(1+0.05)^3=11576.25\)Trina would have $11,576.25 in the fund
Ms. White wants to rent a small car for a week. It will cost the weekly fee plus $0.30 per mile driven. Let m = the number of miles Ms. White drives during the week. Write an expression that shows the amount she will pay for the car. Evaluate the expression you wrote to find out how much Ms. White will pay if she drives 100 miles.
Note: We are not given the weekly fee, but I'll assume it as $80 only to be able to solve the problem and explain the procedure.
Answer:
Ms. White will pay $110 if she drives 100 miles
Step-by-step explanation:
Ms. White wants to rent a car for a week. It costs a weekly fee of $80 plus a $0.30 fee per mile driven.
If we call m = the number of miles driven by Ms. White during the week, then the cost of renting the car is:
C(m)= 80 + 0.30m
If Ms. White drives m=100 miles during the week, then the cost is:
\(C(100)= 80 + 0.30\cdot 100\)
C(100)= 80 + 30
C(100)= $110
Ms. White will pay $110 if she drives 100 miles
1. Samuel paid #34.20 for a blanket. If the marked price of the blanket is #41.78. What is the discount?
2. A mother buys a dress for her daughter at a discount of 18%. If the price of the dress is #35.00. How does she actually pay for the dress?
Answer:
1. The discount is 10%
2. 250
NEED HELP ASAP WILL GHVE BRAINLEST AND TONS OF POINTS
The value of the missing part of the triangle such as PR and ST = 8 and 5 respectively
How to calculate the value of the missing sides of the given triangle?Triangle PQS is congruent with triangle PRS
Therefore, PQ = PR
That is;
PQ = 8
PR = 2x
8 = 2x
X = 8/2 = 4
PR = 2(4) = 8
For ST;
Triangle VST = VUT
That is, TU = ST
ST = 5z
TU = 2z+3
5z = 2z+3
5z+2z = 3
z= 3/3 = 1
ST = 5(1) = 5
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4. P/E Ratios. Favorita Candy’s stock is expected to earn $2.40 per share this year. Its P/E ratio is 18. What is the stock price? (LO7-1)
Answer:
2.4*18 = $43.2
stock price is $43.2
Step-by-step explanation:
Math Homework: Unit 3 Assignment
solve ~
\(2x + 1 - 4x = 7x + 5\)
don't spam .-.
thankyou ~
Answer:
\(x=-\frac{4}{9}\)
Step-by-step explanation:
2x + 1 - 4x = 7x +5
First, take 7x to the left side.
2x + 1 - 4x - 7x = 5
Now take 1 to the right side.
2x - 4x - 7x = 5 - 1
Now combine like terms.
-2x - 7x = 4
-9x = 4
Now divide both sides by -9.
x = - 4/9
Answer:
2x+1-4x=7x+5
-->2x-4x-7x=5-1
-->-2x-12x=4
-->-9x=4
-->x=-4/9
-->x=-4/9
Evaluate the factorial expression.10!/7!
To evaluate the expression we need to remember that:
\(n!=n(n-1)!\)Then we have:
\(\frac{10!}{7!}=\frac{10\cdot9!}{7!}=\frac{10\cdot9\cdot8!}{7!}=\frac{10\cdot9\cdot8\cdot7!}{7!}=10\cdot9\cdot8=720\)Therefore:
\(\frac{10!}{7!}=720\)Cells B1, C1, and D1 contain the values Seat1Row1, Seat2Row1, and Seat3Row1. If cells B1, C1, and D1 were selected, and autofill
used to fill E1, F1, and G1, what would be the auto-filled values?
Seat1Row2, Seat2Row2, Seat3Row2
Seat 2Row2, Seat3Row3, Seat4Row4
Seat 1Row1, Seat2Row2, Seat3Row2
Seat 2Row2, Seat3Row2, Seat4Row2
In the event that cells B1, C1, and D1 were highlighted and then used to fill E1, F1, and G1, the values we would see are A. Seat1Row2, Seat2Row2, Seat3Row2.
What values would be in E1, F1, and G1?When using a spreadsheet, you can autofill succeeding cells if you highlight the preceding ones and then drag the cursor.
If Seat1Row1, Seat2Row1, and Seat3Row1 are in the cells B1, C1, and D1, then the spreadsheet would take note of the "1s" at the end of the values.
When it is then used to autofill the next cells, it would make this a 2 such that we see Seat1Row2, Seat2Row2, Seat3Row2.
If cells H1, I1, and J1 are filled, we would then see Seat1Row3, Seat2Row3, Seat3Row3.
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Amani is calculating the slope of the trend line in the scatterplot below. On a graph, a trend line goes through points (3, 60) and (8, 41). How can Amani use the trend line to check the reasonableness of her answer? She should expect the slope to be negative because the line tilts down moving from left to right on the graph. She should expect the slope to be negative because more points are below the line than above the line. She should expect the slope to be positive because the line has a positive y-intercept. She should expect the slope to be positive because all the plotted points have positive coordinates.
Answer:
amani has to use the positive line
Rodrick is visiting the local museum exhibit and has a maximum of $30 dollars to spend. The entry ticket cost $7. He can spend g dollars. Write an inequality that can find g and the amount of money Rodrick can spend at the gift shop.
Entry ticket = $7
Gift shop money = $g
Maximum to spend = $30
Inequality => 7+g ≤ 30
Hope it helps!