if u have 10 and add 20 and add 10
Answer:
It will be 40
Step-by-step explanation:
Hope this helped have an amazing day!
The given statement is,
→ if u have 10 and add 20 and add 10.
In mathematical expression,
→ (10 + 20) + 10
→ 30 + 10
→ 40 is the answer.
suppose that 4% of the patients tested in a clinic are infected with avian influenza. furthermore, suppose that when a blood test for avian influenza is given, 98% of the patients infected with avian influenza test positive and that 1% of the patients not infected with avian influenza test positive. what is the probability that a patient testing positive for avian influenza with this test is infected with avian influenza?
The probability that a patient testing positive for avian influenza with this test is actually infected with avian influenza is approximately 0.803 or 80.3%
To determine the probability, we can use Bayes' theorem. Let's assume that we have 10,000 patients tested. Out of these, 4% (or 400) patients will be infected with avian influenza, and the remaining 96% (or 9,600) will not have the infection.
Out of the 400 infected patients, the test will correctly identify 98% of them, which is 392 patients. However, there will be a false positive rate of 1% among the 9,600 non-infected patients, which is 96 patients.
So, the total number of patients testing positive will be 392 + 96 = 488. Out of these, 392 patients are truly infected, which gives us the probability of a patient testing positive being infected as 392/488 ≈ 0.803.
Therefore, the probability that a patient testing positive for avian influenza with this test is actually infected with avian influenza is approximately 0.803 or 80.3%.
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pls help me to find out this answer e,f,g,h no. only
Answer:
The picture is too blurry to make out!
Step-by-step explanation:
Hey! when you do problems like this it is very easy.
For multiplication: multiply the numbers and add the exponents.
For division: divide the numbers and subtract the exponents.
Answer:
e answer is 3।
Step-by-step explanation:
9³ ÷ 3⁶
(3²)³ ÷ (3)⁶
3⁶‐⁶
3
Which problem is equivalent to
3/5
А
3 x 5
B
5x3
G
3:5
D
5:3
Answer:
G. 3:5 is the answer.
Step-by-step explanation:
the rest of the choises are wrong.
I need help graphing -9x+6y=18
Answer:
Graph attached as a screenshot. Hope this helps!
Any help would be greatly appreciated!
scale factor is 2/3
Step-by-step explanation:
because
The height in feet of the curved roof of an aircraft hangar can be modeled by y=-0. 02x^2+1. 6x, where x is the horizontal distance in feet from one wall at ground level. What is the greatest height of the hangar?
The greatest height of the hangar is 32 feet.
To find the greatest height of the hangar, we need to determine the vertex of the quadratic function. The vertex represents the maximum point of the curve.
The equation of the curve is given by:
y = -0.02x^2 + 1.6x
The x-coordinate of the vertex can be found using the formula:
x = -b / (2a)
For our equation, a = -0.02 and b = 1.6. Substituting these values into the formula:
x = -1.6 / (2 * -0.02)
x = -1.6 / -0.04
x = 40
Now we have the x-coordinate of the vertex, which is 40. To find the corresponding y-coordinate, we substitute this value back into the equation:
y = -0.02(40)^2 + 1.6(40)
y = -0.02(1600) + 64
y = -32 + 64
y = 32
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Proportions . Please click on image
Answer:
3/1.5=h/5
Step-by-step explanation:
3/1.5=h/5. Solving for the height, you get that h is 5*2=10 m long.
1.75-m-long wire having a mass of 0.100 kg is fixed at both ends. the tension in the wire is maintained at 21.0 n. (a) what are the frequencies of the first three allowed modes of vibration?
The frequencies of the first three allowed modes of vibration are 4.14 Hz, 8.29 Hz, and 12.43 Hz, respectively.
The given problem can be solved using the formula given below; f_n = (n*v)/(2L), where; f_n - frequency v - velocity of the wave L - length of the wire, n - mode number.
Part a: Given; Length of the wire, L = 1.75 m, Mass of the wire, m = 0.100 kg. Tension in the wire, T = 21.0 N`.
To find the frequency of the wire for the first three allowed modes of vibration, we need to calculate the velocity of the wave, v.
We can use the following formula to calculate the velocity of the wave; v = √(T/m), where; T - tension in the wire, m - mass of the wire.
Substituting the given values, v = √(21.0 N / 0.100 kg) = √(210) = 14.5 m/s.
The frequencies of the first three allowed modes of vibration can be found by substituting the values in the given formula.
For n = 1, `f_1 = (1*14.5)/(2*1.75) = 4.14 Hz.
For n = 2,`f_2 = (2*14.5)/(2*1.75) = 8.29 Hz
For n = 3,`f_3 = (3*14.5)/(2*1.75) = 12.43 Hz.
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ahhhh help everyone help me solve this ....
Answer:
\(y = \frac{18 {w}^{2} {x}^{2} {z}^{2} }{25} \)
Step-by-step explanation:
\( \frac{3wx}{ \sqrt{2y} } = \frac{5}{2z} \\ \\ \sqrt{2y} \times 5 = 3wx \times 2z \\ \\ \sqrt{2y} \times 5 = 6wxz \\ \\ \sqrt{2y} = \frac{6wxz}{5} \\ \\ {( \sqrt{2y} })^{2} = {( \frac{6wxz}{5} })^{2} \\ \\ 2y = \frac{36 {w}^{2} {x}^{2} {z}^{2} }{25} \\ \\ \\ y = \frac{36 {w}^{2} {x}^{2} {z}^{2} }{25} \div 2 \\ \\ \\ y = \frac{36 {w}^{2} {x}^{2} {z}^{2} }{25} \times \frac{1}{2} \\ \\ \\ y = \frac{36 {w}^{2} {x}^{2} {z}^{2} }{50} \\ \\ \\ y = \frac{18 {w}^{2} {x}^{2} {z}^{2} }{25} \)
I hope I helped you^_^
I'M STUCK HELP Drag and drop to complete the proof below Given: DE is tangent to circle C, at point F Prove: FEC and ECF are complementary
The sum of angle ∠FEC and angle ∠ECF is 90°. Then they are complementary angles.
What is complementary angles?
Complementary angles are defined as two angles whose sum is 90 degrees. In other words, two angles that add up to 90 degrees are known as complementary angles.
We have the information available from the question:
DE is tangent to circle C, at point F.
Then prove that angle ∠FEC and angle ∠ECF are complementary angles.
We know that the radius of the circle and the tangent on the circle make a right angle at the circumference.
So, angle ∠EFC will be 90°.
and, we also know that:
The sum of all interior angles of the triangle is 180°. Then we have
∠FEC + ∠ECF + ∠EFC = 180°
∠FEC + ∠ECF + 90° = 180°
∠FEC + ∠ECF = 90°
The sum of angle ∠FEC and angle ∠ECF is 90°. Then they are complementary angles.
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The given question is incomplete, for complete question:
To see the attachment.
Find the final amount of money in an account if $3,700 is deposited at 4.5% interest compounded quarterly and the money is left for 9 years?
Based on the given parameters, the value of the money after 9 years is $5534.89
How to determine the amount in nine years?The given parameters about the compound interest are
Principal Amount, P = $3700
Interest Rate, R = 4.5%
Time, t = 9
Number of times, n = 4
To calculate the amount, we have:
A = P + CI
Where
C = P(1 + R)^t
So, we have
A = P(1 + R)^t
This can be rewritten as
A = P(1 + R/n)^nt
Substitute the known values in the above equation
A = 3700 * (1 + 4.5%/4)^(9*4)
Evaluate the expression
A = 5534.89
Hence, the value of the investment after 9 years is $5534.89
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An online music store is offering a promotion. When you spend $40 or more, you receive 3 songs for free. You buy an album for $8. Write and solve an inequality that represents how much more money you must spend to receive the three free songs.
Answer:\(x+8\geq 40\)
Step-by-step explanation:
\(x+8\geq 40\)
subtract 8 from both sides to isolate x
\(x\geq 32\)
You must spend 32 more dollars to receive three free songs.
A bakery sells 6 bagels for $2.99. What is the cost, in dollars, for 48 bagels?
A. $10.76
B. $13.16
C. $23.92
D. $37.08
Answer: $23.92
Step-by-step explanation:
First, we know that 6 bagels is $2.99.
48/6=8
This means that 6 is a multiple of 48, which makes it easier to solve.
$2.99 x 8 = 23.92
= $23.92
A company expects that the number N(x) of a product sold during a week is related to the amount spent on advertising by the function N(x)=-6x3+180x²+2250x + 13,000, where x (with 0 ≤x≤25) is the amount spent on advertising in thousands of dollars. What is the point of diminishing returns?
The point of diminishing returns is
(Simplify your answer. Type an ordered pair. Do not use commas in the individual coordinates.)
The point of diminishing returns is (20.98, 21247.3).
The point of diminishing returns occurs when the marginal cost of producing an extra unit of output exceeds the marginal revenue generated from selling that unit. Mathematically, it is the point at which the derivative of the production function equals zero and the second derivative is negative.
Given the polynomial function N(x) of degree 3, we can find the point of diminishing returns by finding the critical points where the first derivative equals zero and evaluating the second derivative at those points.
The derivative of N(x) is N'(x) = -18x² + 360x + 2250. To find the critical points, we set N'(x) = 0:
0 = -18x² + 360x + 2250
Dividing by -18 simplifies the equation:
0 = x² - 20x - 125
Using the quadratic formula, we find the solutions to the equation:
x₁,₂ = (20 ± √(20² - 4(1)(-125))) / 2(1)
x₁,₂ = 10 ± 5√5
Thus, the two critical points of N(x) are at x = 10 - 5√5 and x = 10 + 5√5.
To determine the point of diminishing returns, we evaluate the second derivative N''(x) = -36x + 360 at these critical points:
N''(10 - 5√5) = -36(10 - 5√5) + 360 ≈ -264.8
N''(10 + 5√5) = -36(10 + 5√5) + 360 ≈ 144.8
From the evaluations, we find that N''(10 + 5√5) is negative while N''(10 - 5√5) is positive. Therefore, the point of diminishing returns corresponds to x = 10 + 5√5.
To find the corresponding y-coordinate (N(10 + 5√5)), we can substitute the value of x into the original function N(x).
Hence, the point of diminishing returns is approximately (20.98, 21247.3).
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Gary earns $9.12 per hour at his job. He worked 24 hours last week. Calculate Gary's pay before taxes.
Gary's pay before taxes is $218.88.
Gary's pay before taxes can be calculated by multiplying his hourly rate by the number of hours he worked.
Taxes are compulsory payments made by a government organisation, whether local, regional, or federal, to people or businesses. Tax revenues are used to fund a variety of government initiatives, such as Social Security and Medicare as well as public infrastructure and services like roads and schools.
Step 1: Identify the hourly rate and number of hours worked.
Hourly rate: $9.12
Hours worked: 24
Step 2: Multiply the hourly rate by the number of hours worked.
$9.12 * 24 = $218.88
Step 3: The result is Gary's pay before taxes.
Gary's pay before taxes is $218.88.
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Please help! Will mark best answer as brainliest
The equation x² + kx + 2 = 0, where k is a constant has no real roots. Find the set of possible values for k.
Answer: 4 :1 , 2
(The explanation is in the .pdf)
What is the surface area of a square pyramid with a height of 12 mm and a base that measures 10mm on each side?
Answer:
The surface area is: 360 millimeters squared
Step-by-step explanation:
Base Surface Area = 10 squared
= 100 millimeters squared
Lateral Surface Area =
2×10× √
10/2 squared+ 12 squared
= 260 millimeters squared
Total Surface Area = 360 millimeters squared
Hope this helps!
In two or more complete sentences write and solve an equation for the situation and explain how you will solve the equation.
After an 8-week exercise program Grace lost 45 pounds. She now weighs 122 pounds. How much did Grace weigh before she started her exercise program?
will give brainliest to best answer!
:3
the graph of an ellipse is shown. which equation represents this ellipse?
An equation is formed of two equal expressions. The equation of the ellipse is,
⇒ [(x-6)²/49] + [(x-2)²/9] = 1.
An equation is formed when two equal expressions are equated together with the help of an equal sign '='.
As it can be seen that the centre of the ellipse is at (6,2). Also, the major radius is equal to 7 units, while the minor radius is equal to 3 units. The general equation of the ellipse is given as,
(x - h)²/a² + (y - k)²/b² = 1
(x - 6)²/7² + (y - 2)²/3² = 1
[(x-6)²/49] + [(x-2)²/9] = 1.
Hence, the equation of the ellipse is,
⇒ [(x-6)²/49] + [(x-2)²/9] = 1 .
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Answer:
the answer is A on edge :)
Step-by-step explanation:
good luck <3
what is the slope...
Answer:
The slope of a line is a measure of its steepness. Mathematically, slope is calculated as "rise over run" (change in y divided by change in x).
Step-by-step explanation:
A hose fills a tank at a rate of 20 gallons per minute.
What is the rate in liters per hour?
(1 gallon ≈3.79 liters)
Answer: 4548
Step-by-step explanation:
A random sample of 92 sophomores are asked whether they plan to attend Homecoming. Of these, 51 sophomores said they will attend. What is the margin of error at 90% confidence and its interpretation?
The margin of error at 90% confidence and its interpretation is 0.085. 90% confident that the true proportion of sophomores who will attend Homecoming is within 0.085 of the sample proportion.
The margin of error is defined as a term used in statistics to find the confidence interval. It is denoted by E.
Given, random sample of 92 .
The formula for margin of error is;
\(E = z(\sqrt{(p(1 - p)/n} )\)
The parameters are given as;
Sample size; n = 92
Sample of success; x = 51
Sample proportion:
p = 51/92
= 0.554
z at 90% CL = 1.645
Thus;
\(E = 1.645(\sqrt{(0.554(1 - 0.554)/92} )\)
\(E = 0.085\)
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What’s the answer someone please help
Answer:
Step-by-step explanation:
Ok:
1. This is a percent problem!
45/100*15=
675/100=
6.75
2. Subtract:
15-6.75=
8.25$
Answer: 8.25$
3/7 of students at a school are boys. If there are 2282 students at the school, how many are girls?
Answer:
2282 divided by 3over7
Answer:
1304
Step-by-step explanation:
2282:7 =326
326 . 3 = 978
2282 - 978 = 1304
Can you help me please ?
Answer:
A
Step-by-step explanation:rise⇵ over run ⇄
the rise is -6 the run is 3
PLEASE HELP!! find the slope of the graph asap!
Answer: I do not understand
Step-by-step explanation:
Select all of the following integral(s) that represent the volume of the solid obtained by rotating the region bounded by x = 2y?, y = 1, x = 0 about the y-axis. oso 2nx(1 - )dx OS. 26ty(2y2)dy So'r(1 – (V)2)dx Olot 20x(1 – V)?dx Oſ #(1 – V)?dx 01221(2y2)dy To (2y2)żdy So (2y2)2dy
The volume is given by the integral 4π∫[0,1/2] \(y^2\) dy, resulting in a volume of π/6.
To find the volume of the solid obtained by rotating the region bounded by the curves x = 2y, y = 1, and x = 0 about the y-axis, we can use the method of cylindrical shells.
The height of each cylindrical shell will be given by the difference between the x-values of the curves x = 2y and x = 0, which is x = 2y. Since we are rotating about the y-axis, the radius of each shell will be the value of y.
The integral that represents the volume is given by:
V = ∫[a,b] 2πy(x) dy
Where a and b represent the bounds of the y-values.
The curve x = 2y intersects y = 1 when 2y = 1, so y = 1/2. Therefore, the bounds of integration for y are 0 to 1/2.
The integral becomes:
V = ∫[0,1/2] 2πy(2y) dy
Simplifying, we have:
V = 4π∫[0,1/2] \(y^2\) dy
Evaluating the integral, we get:
V = 4π * [\((1/3)(1/2)^3\)-\((1/3)(0)^3\)]
V = 4π * (1/24)
V = π/6
Therefore, the correct integral that represents the volume of the solid is 4π∫[0,1/2]\(y^2\) dy, and the volume of the solid is π/6.
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Use the figure shown. Find the slope of the line. A right-triangle graphed on a coordinate plane. Vertex A is at ordered pair negative 2 comma 1. Vertex B is at ordered pair negative 4 comma 2. Vertex C is at ordered pair negative 2 comma 2. A line passes through the vertices A and B. The slope is
The coordinate plane, also known as the Cartesian plane, is a two-dimensional plane that is used to plot and locate points using a set of two perpendicular axes. The horizontal axis is called the x-axis and the vertical axis is called the y-axis.
What is the coordinate plane?The point where the two axes intersect is called the origin, which is usually denoted by the coordinates (0,0).
Each point in the plane can be located by its unique pair of coordinates (x,y), where x represents the horizontal distance from the origin and y represents the vertical distance from the origin.
To find the slope of the line passing through vertices A and B, we need to use the formula:
slope \(= (y2 - y1)/(x2 - x1)\)
Where (x1, y1) and (x2, y2) are the coordinates of the two points.
To find the slope of the line passing through vertices A(-2, 1) and B(-4, 2), we can use the slope formula:
slope = (change in y)/(change in x) \(= (y2 - y1)/(x2 - x1)\)
Substituting the coordinates of A and B into the formula, we get:
slope \(= (2 - 1)/(-4 - (-2)) = 1/-2 = -1/2\)
Therefore, the slope of the line passing through vertices A and B is -1/2.
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A TV costs £800 plus VAT at 20%.
What is the total cost of the TV?
Answer:
960 dollars
Step-by-step explanation:
Your welcome