An exponential function can represent growth or decay.
What in mathematics is an exponential function?
Calculating the exponential growth or decay of a given collection of data is done using an exponential function. For instance, exponential functions can be used to estimate population changes, loan interest rates, bacterial growth, radioactive decay, or disease transmission.
An exponential function is represented as:
y = abˣ
Where:
b represents the growth or decay rate of the function
When the value of b is greater than 1, then the exponential function represents growth
From the diagrams, only the last graph represent an exponential growth or decay .
Hence, the graph represents an exponential growth function is growth or decay.
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A test to determine whether a certain antibody is present is 99.3% effective. This means that the test will accurately come back negative if the antibody is not present (in the test subject) 99.3% of the time. The probability of a test coming back positive when the antibody is not present (a false positive) is 0.007 . Suppose the test is given to six randomly selected people who do not have the antibody.
(a) What is the probability that the test comes back negative for all six people?
(b) What is the probability that the test comes back positive for at least one of the six people?
a) The probability that the test comes back negative for all six people is 95.8%,
b) The probability that the test comes back positive for at least one of the six people is 4.2%.
(a) To find the probability that the test comes back negative for all six people, we can use the fact that the test is 99.3% effective in accurately detecting the absence of the antibody.
Since the test is 99.3% effective, the probability of it coming back negative for each individual who does not have the antibody is 0.993. Therefore, the probability that the test comes back negative for all six people is calculated as follows:
P(negative for all 6) = (0.993)^6 ≈ 0.958
Therefore, the probability that the test comes back negative for all six people is approximately 0.958, or 95.8%.
(b) To find the probability that the test comes back positive for at least one of the six people, we need to consider the probability of a false positive.
The probability of a false positive, which is the probability of the test coming back positive when the antibody is not present, is given as 0.007. Therefore, the probability of the test correctly identifying the absence of the antibody is 1 - 0.007 = 0.993.
The probability that the test comes back positive for at least one person is the complement of the probability that the test comes back negative for all six people. So we can calculate it as follows:
P(positive for at least one person) = 1 - P(negative for all 6) ≈ 1 - 0.958 = 0.042
Therefore, the probability that the test comes back positive for at least one of the six people is approximately 0.042, or 4.2%.
In summary, the probability that the test comes back negative for all six people is approximately 95.8%, while the probability that the test comes back positive for at least one of the six people is approximately 4.2%.
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PLS HELP!!! Ill give 20 points!!!
Answer:
Step-by-step explanation:
22.57 cm inches are the net weight of the slope
Each of the following people bought a watch that costs 300. Which of the following people will pay the most for their purchase
The individual that will be paying the most for their purchase is: B.edgar paid with a credit card and paid the minimum payment each month
Which individual will pay the most?The individual that will pay the most according to the data provided is Edgar. Edgar's payment is spread out to the longest length of time. So, he will have to pay the added dues for extending his payment.
Usually, the person who pays cash pays the least amount while the person who pays in installments is charged for additional time spent in making the payment.
Complete Question:
Each of the following people bought a watch that costs $300. Which of the following people will pay the most for their purchase A.Sarah paid cash B.edgar paid with a credit card and paid the minimum payment each month C.susan paid with a credit card and paid the minimum payment plus 30 each month D. Sean paid with a credit card and paid the full balance the first of the month
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make e the subject
e-5=2f
Answer:
e-5=2f
take '-5' to the other side where '2f' is
e=2f+5
Here is an expression:3.2t solve the equation when t=4
Answer:
3.2 x 4 = 12.8
therefore your answer will be 12.8
Add. (5x - 2y + 7) + (3x + y - 8)
Answer:
\(=8x-y-1\)
Step-by-step explanation:
So we have the expression:
\((5x-2y+7)+(3x+y-8)\)
Combine like terms:
\(=(5x+3x)+(-2y+y)+(7-8)\)
Add:
\(=8x-y-1\)
And we're done!
Answer:
8x-y-1
Step-by-step explanation:
First remove the parentheses
5x-2y+7+3x+y-8
Add 5x and 3x
8x-2y+7+y-8
add -2y and y
8x-y+7-8
Subtract 8 from 7
8x-y-1
The figure is cut into 15 equal pieces. Shade 2/5 of the figure
Answer: Shade 6 pieces
Step-by-step explanation:
Because 2/5 of 15 is 6
Determine the value of each. Round all answers to the nearest hundredth
AC =
a=
0=
The values for the length AC and the angles of the right-angled triangle ABC are AC = 12.37, α = 75.96 , and θ = 14.04 using the trigonometric ratios of tangent.
What is trigonometric ratios?The trigonometric ratios is concerned with the relationship of an angle of a right-angled triangle to ratios of two side lengths. The basic trigonometric ratios includes;
sine, cosine and tangent.
Considering the right-angled triangle ABC, we shall calculate for the angle B and side lengths a and b as follows:
AC² = 3² + 12² {Pythagoras rule}
AC = √(9 +144)
AC = √153
AC = 12.3693
tanα = 12/3 {opposite/adjacent}
α = tan⁻¹(4) {cross multiplication}
α = 75.9638
tanθ = 3/12 {opposite/adjacent}
θ = tan⁻¹(1/4){cross multiplication}
θ = 75.9638
Therefore, the values for the length AC and the angles of the right-angled triangle ABC are AC = 12.37, α = 75.96 , and θ = 14.04 using the trigonometric ratios of tangent.
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A parralogram has a base of 9 and a corresponding height of 2/3
The height of parallelogram is 6
What is parallelogram?In geometry, parallelogram is a shape which is a type of quadrilateral. A parallelogram has 2 pair of sides which are parallel. Thus, we can say that a parallelogram is a quadrilateral of 2 pair of parallel sides. The opposite sides of parallelogram are of equal side.
Parallelogram is a convex polygon, which is a 2-dimentional geometric shape.
Important formulas of Parallelogram :
Area of Parallelogram = base . heightPerimeter of Parallelogram = 2 base + 2 heightTotal Number of vertex = 4Total Number of edges = 4Line of the Symmetry = 0In the given question,
base of parallelogram = 9
height = 2/3
Also, area = base . height
therefore, area = 9 . 2/3 = 3.2 = 6
The height of parallelogram is 6
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The complete question is:
A parallelogram has a base of 9 and a corresponding height of 2/3 . what is the area of the parallelogram.
determine the inverse of h(x)=x/x-2
Given:
\(h(x)=\frac{x}{x-2}\)To find the inverse of h(x):
Let the equation be,
\(y=\frac{x}{x-2}\)Swap x and y, we get
\(x=\frac{y}{y-2}\)On solving we get,
\(\begin{gathered} \frac{y-2}{y}=\frac{1}{x} \\ 1-\frac{2}{y}=\frac{1}{x} \\ -\frac{2}{y}=\frac{1}{x}-1 \\ -\frac{2}{y}=\frac{1-x}{x} \\ \frac{2}{y}=-(\frac{1-x}{x})_{} \\ \frac{2}{y}=\frac{x-1}{x} \\ \frac{2}{y}=\frac{x-1}{x} \\ \frac{1}{y}=\frac{x-1}{2x} \\ y=\frac{2x}{x-1} \end{gathered}\)Hence, the inverse of the h(x) is,
\(\frac{2x}{x-1}\)will mark brainleist pls help
Answer:
x = 31°
Step-by-step explanation:
the sum of the 3 angles in a triangle = 180° , that is
x + 54° + 95° = 180°
x + 149° = 180° ( subtract 149° from both sides )
x = 31°
Solve for I in the diagram below.
Answer:
20
Step-by-step explanation:
180-100
80=(x+3x)
4x=80
x=20
How to answer matrix question 1.
A=
5 -3
-9 0
-5 1
-7 -4
G=
-1 -9
-3 -10
8 -6
1 0
4[A] + 2[G] =
Answer:
A=4 -3 5.3748362
Step-by-step explanation:
Roughly how much more does auto insurance cost for a 16 year old compared to a middle aged (40-50 year old) driver
A 16-year-old on their own policy pays on average $4,000 more per year than a 50-year-old would have to pay
The cost of insuranceAuto insurance costs vary significantly depending on factors such as location, vehicle type, and driving history. However, on average, a 16-year-old driver can expect to pay significantly more for auto insurance compared to a middle-aged driver (40-50 years old).
The exact amount varies, but it's not uncommon for a 16-year-old driver to pay two to three times more for auto insurance than a middle-aged driver. This is mainly because younger drivers are considered riskier due to their inexperience and higher likelihood of being involved in accidents.
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What is true about this system of equations {2x-y=5 , x=4
Answer: The systems of equations have only one solution because if x 4 then y is equal to 3 which proves it that is a one solution graph.
Step-by-step explanation:
2(4)- y = 5
8 - y= 5
-8 -8
-1y= -3
y= 3
If you apply the changes below to the absolute value parent function, f(x) = (x,
what is the equation of the new function?
Shift 4 units left.
Shift 2 units up.
A. g(x) = \x - 41 + 2
B. g(x) = x + 21 - 4
C. g(x) = [X + 4 + 2
D. g(x) = x + 2 + 4
Answer:
C) g(x) = |x+4|+2
The new function g(x) = |x+4|+2
Step-by-step explanation:
Given that the parent function f(x) = |x|
The function shifts '4' units left then the function transformed to
g(x) = |x+4|
Again the function shift '2' units up then the function transformed to
g(x) = |x+4|+2
Final answer:-
The new function g(x) = |x+4|+2
For functions f(x)=x^2−5x−24 and g(x)=x+3, find a. (fg)(x) b. (fg)(−3)
please help asap!! 20 points
3*f(-4)-3*g(-2)
Answer:
-27
Step-by-step explanation:
By inspection of the graph
f(-4) = -3
g(-2) = 6
Therefore, 3 · f(-4) - 3 · g(-2) = (3 x -3) - (3 x 6) = -27
A van got stalled in front of your house. The driver asked barangay officials to help him push the van to get moving. They used a total force of 1,200 newtons. After pushing the Van for 15 minutes, they were able to move the van 150 meters away from your house.
How much power did the volinteers use to pushe the van?
It should be noted that the power that the volunteers use to pushe the van is 200 watts.
How to calculate the power?From the information, they used a total force of 1,200 newtons and ater pushing the Van for 15 minutes, they were able to move the van 150 meters away from your house.
It should be noted that power is calculated as:
Power = Force × Displacement / Time
Force = 1200 Newton
Displacement = 150 meters
Time = 15 minutes = 15 × 60 = 900 seconds.
Therefore, the power that the volunteers use to pushe the van is:
Power = Force × Displacement / Time
=(1200 × 150) / 900
= 200 Watt.
Therefore, it should be noted that the power that the volunteers use to pushe the van is 200 watts.
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calculate the length of the diagonal for the given rectangular prism. Round to the nearest tenth
Length = 10cm
Width = 4cm
Height = 10cm
The length of the diagonal of the rectangular prism is 14.7 feet to the nearest tenth.
What is a prism?In a three-dimensional space prism is a polyhedron where two ends are similar.
Given:
The dimensions of the right rectangular prism:
Length l = 10cm
Width w = 4cm
Height h = 10cm
The length of the diagonal of the rectangular prism,
= √(l² + w² + h)
= √{(10)² + (4)² + (10)²}
= 14.69
= 14.7 feet.
Therefore, the length of the diagonal is 14.7 feet.
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On January 1, 2022 Hideki Matsuyama provides services in exchange for a $10,000 zero-interest bearing note due in 4 years. The effective interest rate for a note of this type is 15 percent. How much revenue does Hideki recognize on January 1, 2022?
Hideki recognizes a $17,490.06 revenue.
RevenueGiven that on January 1, 2022 Hideki Matsuyama provides services in exchange for a $10,000 zero-interest bearing note due in 4 years, and the effective interest rate for a note of this type is 15 percent, to determine how much revenue does Hideki recognize on January 1, 2022 the following calculation must be made:
10000 x 1.15^4 = X10000 x 1.749 = x17490.06 = XTherefore, Hideki recognizes a $17,490.06 revenue.
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Answer:
Hideki recognizes a $17,490.06 revenue.
Step-by-step explanation:
I WILL GIVE BRAINLIEST IF YOU ARE CORRECT!!
A. The typical value and the spread are both greater in set B. B. The typical value and the spread are both greater in set A. C. The typical value is greater in set B. The spread is greater in set A. D. The typical value is greater in set A The spread is greater in set B.
Answer:
D. The typical value is greater in set A. The spread is greater in set B.
Step-by-step explanation:
The typical value is greater in set A.
[] We can see that the red arrow already shows this, but the average (add up all the numbers and divide by number or numbers) in set A is greater than in set B as 7 > 6.
The spread is greater in set B.
[] The spread can also be thought of as the range (largest number - smallest number) so the spread is greater than B since 7 > 3.
Have a nice day!
I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly. (ノ^∇^)
- Heather
Calculate A woman is walking at a rate of 0.5
m/s. Her mass is 62 kg. Calculate the woman's
kinetic energy in joules.
Answer:
7.75J
Step-by-step explanation:
kinectic energy formula = 1/2mv²
m mass
v velocity
1/2 x 62 x 0.5² = 7.75
A woman is walking at a rate of 0.5m/s. Her mass is 62 kg. The woman's kinetic energy in joules:
K.E. = 7.75 kgm²/s²
What is Kinetic Energy?
The energy an object has as a result of motion is known as kinetic energy in physics. It is described as the effort required to move a mass-determined body from rest to the indicated velocity. The body holds onto the kinetic energy it acquired during its acceleration until its speed changes.
Given,
Mass = 62kg
Velocity = 0.5m/s
The formula for Kinetic Energy is :
K.E. = 1/2 m v².
K.E. = 1/2 (62)(0.5)²
K.E. = 1/2 (62)(0.25)
K.E. = 1/2 (15.5)
K.E. = 15.5/2
K.E. = 7.75 kgm²/s²
or
K.E. = 7.75 joules
Hence, he woman's kinetic energy in joules, K.E. = 7.75 kgm²/s²
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the perimeter of a semicircle protractor is 14.8cm,find it's radius
The radius of the semicircle protractor is approximately 4.693 cm.
Given,Perimeter of a semicircle protractor = 14.8 cm.
To find:The radius of a semicircle protractor.Solution:We know that the perimeter of a semicircle protractor is the sum of the straight edge of a protractor and half of the circumference of the circle whose radius is the radius of the protractor.
Circumference of a circle = 2πrWhere, r is the radius of the circle.If the radius of the semicircle protractor is r, then Perimeter of a semicircle protractor = r + πr [∵ half of the circumference of a circle =\((1/2) × 2πr = πr]14.8 = r + πr14.8 = r(1 + π) r = 14.8 / (1 + π)r ≈ 4.693\) cm.
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If the random variable x is normally distributed with a mean equal to .45 and a standard deviation equal to .40, then P(x ≥ .75) is:
If the random variable x is normally distributed with a mean equal to 0.45 and a standard deviation equal to 0.40, then P(x ≥ .75) is 0.9227.
What is a Z-score?A z-score describes the position of a raw score in terms of its distance from the mean when measured in standard deviation units. The z-score is positive if the value lies above the mean and negative if it lies below the mean.
Given the problem above, we need to find what the z-score is when P(x ≥ .75).
The formula for calculating a z-score is given by:
\(Z=\dfrac{\text{x}-\mu}{\sigma}\)
Where:
x is the value of 0.75\(\mu\) is the mean of 0.45And \(\sigma\) is the standard deviation of 0.40Now,
\(Z=\dfrac{\text{x}-\mu}{\sigma}\)
\(Z=P(\text{x} \geq 0.75) = \huge \text(\dfrac{P(Z \geq (0.75 - 0.45)}{0.40}\huge \text)\)
\(Z= P\huge \text (\dfrac{Z \geq0.30}{0.40}\huge \text)\)
\(Z=P(Z \geq 0.75) = 1 - P(Z < 0.75)\)
\(Z=1 - 0.077337\)
\(Z\thickapprox 0.9227\)
Therefore, the z-score of P(x ≥ .75) is 0.9227.
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one card is drawn from a pack of 52cards each of the 52 cards being equally likely to be drawn. what is the probability that the card drawn is a king?
The probability of drawing a king from a standard deck of 52 cards is 1/13.
In a standard deck of 52 playing cards, there are four kings: the king of hearts, the king of diamonds, the king of clubs, and the king of spades.
To find the probability of drawing a king, we need to determine the ratio of favorable outcomes (drawing a king) to the total number of possible outcomes (drawing any card from the deck).
The total number of possible outcomes is 52 because there are 52 cards in the deck.
The favorable outcomes, in this case, are the four kings.
Therefore, the probability of drawing a king is given by:
Probability = (Number of favorable outcomes) / (Number of possible outcomes)
= 4 / 52
= 1 / 13
Thus, the probability of drawing a king from a standard deck of 52 cards is 1/13.
This means that out of every 13 cards drawn, on average, one of them will be a king.
It is important to note that the probability of drawing a king remains the same regardless of any previous cards that have been drawn or any other factors.
Each draw is independent, and the probability of drawing a king is constant.
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Find the area of the shaded region. Leave your answer in terms of a and in simplified radical
form.
120°
15 cm
The area of the shaded region is
(Simplify your answer. Use integers or fractions for any numbers in the expression. Type an exact answer in terms of x.)
50/1)
(1)
In
The area of the shaded region, we need to subtract the area of the smaller circle from the larger circle. Let's call the radius of the larger circle "r" and the radius of the smaller circle "a".
the area of the shaded region is 3πa^2.
The area of a circle is given by the formula
\(A = πr^2.\)
Therefore, the area of the larger circle is πr^2 and the area of the smaller circle is πa^2.
To find the area of the shaded region, we need to subtract the area of the smaller circle from the larger circle:
Shaded area = \(πr^2 - πa^2\)
However, we're not done yet because we need to simplify this expression in terms of "a" and in simplified radical form. To do this, we can factor out π from both terms:
Shaded area = π(r^2 - a^2)
We can simplify this expression further by noticing that \(r^2 - a^2 \)is actually the difference of two squares, which can be factored as:
\(r^2 - a^2 = (r + a)(r - a)\)
Therefore, the area of the shaded region is:
Shaded area = \(π(r + a)(r - a)\)
And since we were asked to leave our answer in terms of "a" and in simplified radical form, we can substitute r = 2a (since the diameter of the larger circle is twice the radius of the smaller circle) and simplify:
Shaded area =\( π(2a + a)(2a - a) = π(3a)(a) = 3πa^2\)
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Evaluate the expression
if x = 2, y = 3, and z = 4.
2x²-y + 2(z-1)
Answer:
11
Step-by-step explanation:
Substituting the values of x, y, and z into the expression, we get:
2x² - y + 2(z-1) = 2(2)² - 3 + 2(4-1)
= 2(4) - 3 + 2(3)
= 8 - 3 + 6
= 11
Therefore, if x = 2, y = 3, and z = 4, then the value of the expression 2x² - y + 2(z-1) is 11.
Answer:
11
Step-by-step explanation:
if x = 2, y = 3, and z = 4.
2x²-y + 2(z-1)
Substituting the given values of x, y, and z, we get:
2x² - y + 2(z-1) = 2(2)² - 3 + 2(4-1)
= 2(4) - 3 + 2(3)
= 8 - 3 + 6
= 11
Therefore, the value of the expression when x = 2, y = 3, and z = 4 is 11.
BODMAS (Brackets, Order, Division, Multiplication, Addition, Subtraction) is used to determine the sequence of operations in a mathematical expression. It is used to avoid confusion and ensure that everyone obtains the same answer from a mathematical expression. The rule states that the operations inside the brackets must be done first, followed by orders, then division and multiplication (from left to right), and finally addition and subtraction (from left to right).
Check all the statements) that are true about the polynomial function graphed
Its leading coefficient is positive. its leading coefficient is negative.
It has an odd degree
It has an even degree
It has exactlv two real zeroes
It has exactly three real zeroes.
None of the zeroes have even multiplicity
None of the zeroes have odd multiplicity.
The true statements about the polynomial function graphed are:
Its leading coefficient is positive.
It has an odd degree.
None of the zeroes have even multiplicity.
From the given options, the true statements about the polynomial function graphed are:
Its leading coefficient is positive.
It has an odd degree.
None of the zeroes have even multiplicity.
Let's analyze each statement:
Its leading coefficient is positive:
The leading coefficient of a polynomial is the coefficient of the term with the highest degree.
From the graph, if the polynomial is going upwards on the right side, it indicates that the leading coefficient is positive.
It has an odd degree: The degree of a polynomial is the highest power of the variable in the polynomial expression.
If the graph has an odd number of "turns" or "bumps," it indicates that the polynomial has an odd degree.
None of the zeroes have even multiplicity:
The multiplicity of a zero refers to the number of times it appears as a factor in the polynomial.
In the given graph, if there are no repeated x-intercepts or no points where the graph touches and stays on the x-axis, it implies that none of the zeroes have even multiplicity.
The other statements (its leading coefficient is negative, it has an even degree, it has exactly two real zeroes, it has exactly three real zeroes, and none of the zeroes have odd multiplicity) cannot be determined based solely on the information given.
Therefore, the true statements about the polynomial function graphed are:
Its leading coefficient is positive.
It has an odd degree.
None of the zeroes have even multiplicity.
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A point is randomly chosen in the circle shown below.
In which region of the circle is the point certain to be chosen?
in region A
in regions C or D
in region E
in a region with a letter
Answer: in a region with a letter
Step-by-step explanation:
we cannot predict for sure what will happen when we plot the random point.
Answer:
A certain answer would be in a region with a letter
Step-by-step explanation:
All the sections have letters so, no matter what letter, the point would land in a section with a letter.