Answer:
Step-by-step explanation=306m2
What is the rate of change of the contractor's total earnings in dollars with respect to the
number of hours worked?
A)
$8.75 per hour worke
B)
$9.25 per hour worked
C)
$10.00 per hour worked
D)
$20.00 per hour worked
Answer: Your answer is A: 8.75 Per hours worked.
Step-by-step explanation:
The high blood pressure of an obese individual can be modelled by the function p()-40 sin 3x + 160, where p(1) represents the blood pressure, in millimetres of mercury (mmHg), and is the time, in seconds. Determine the maximum and minimum blood pressure, in the time interval 0 SIS 0.75, and the time(s) when they occur.
Therefore, the maximum blood pressure of 200 mmHg occurs at approximately 0.524 seconds, and the minimum blood pressure of 120 mmHg occurs at approximately 1.571 seconds within the time interval 0 ≤ t ≤ 0.75.
To find the maximum and minimum values of the blood pressure function p(t), we need to examine the behavior of the sinusoidal term, -40sin(3t), within the given time interval. The function is a sine wave with an amplitude of 40 and a period of 2π/3. This means that the maximum value occurs at the peak of the sine wave (amplitude + offset), and the minimum value occurs at the trough (amplitude - offset).
The maximum blood pressure corresponds to the peak of the sine wave, which is 40 + 160 = 200 mmHg. To find the time at which this occurs, we set the argument of the sine function, 3t, equal to π/2 (since the peak of the sine wave is π/2 radians). Solving for t gives t = (π/2) / 3 = π/6 ≈ 0.524 seconds.
Similarly, the minimum blood pressure corresponds to the trough of the sine wave, which is -40 + 160 = 120 mmHg. Setting the argument of the sine function equal to 3π/2 (the trough of the sine wave), we find t = (3π/2) / 3 = π/2 ≈ 1.571 seconds.
Therefore, the maximum blood pressure of 200 mmHg occurs at approximately 0.524 seconds, and the minimum blood pressure of 120 mmHg occurs at approximately 1.571 seconds within the time interval 0 ≤ t ≤ 0.75.
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How to find the point where the line x = –1 – t, y = 2 + t, z = 1+ t intersects the plane 3x + y + 3z = 1 ?
The point where the line intersects the plane is (-1/3, 2/3, -1/3).
We substitute the equations for the line into the equation for the plane and solve for the value of t that satisfies the equation. Once we have the value of t, we can substitute it back into the parametric equations for the line to find the point of intersection.
Let's apply this method to find the point where the line x = –1 – t, y = 2 + t, z = 1+ t intersects the plane 3x + y + 3z = 1.
Substituting the equations for the line into the equation for the plane, we get:
3(-1 - t) + (2 + t) + 3(1 + t) = 1
Simplifying the left-hand side, we get:
-3t + 5 = 1
Solving for t, we get:
t = -4/3
Substituting t = -4/3 back into the parametric equations for the line, we get:
x = -1 - (-4/3) = -1/3
y = 2 - 4/3 = 2/3
z = 1 - 4/3 = -1/3
Therefore, the point where the line intersects the plane is (-1/3, 2/3, -1/3).
When we are given a line and a plane in 3D space, we can find the point where the line intersects the plane by solving the system of equations that define the line and the plane simultaneously. The equations for the line are given as parametric equations in terms of the parameter t, and the equation for the plane is given in Cartesian form.
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Algae grown in open pond systems are susceptible to invaders, what are they and how do they impact the algae?.
Between 10 and 180 million years ago, fossil fuels were first formed. That time spans from middle age to the present. Paleozoic deposits are where 10% of them occur.
What is phosphorus?
Phosphorus is a chemical element with the atomic number 15 and the symbol P. The two primary forms of elemental phosphorus are red and white, however due to its high reactivity, free phosphorus is not present in nature.
The answers to the questions in the list are as follows.
Between 10 and 180 million years ago, fossil fuels were first formed. That time spans from middle age to the present. Paleozoic deposits are where 10% of them occur.
The growth of marine algae requires a number of essential ingredients, including carbon dioxide, nitrogen, and phosphorus. The benefit of utilizing wastewater is that it may be used to support high-strain algae that can remove 90% of the nitrates and roughly 50% of the phosphorus from the wastewater.
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Sam and Dean are brothers. Their ages now add up to the age of their sister. In ten years, Dean's age will be the sum of their ages today. How old are each of them?
Answer:
Sam is yeas old, and Dean is (x - 10) year's old, where 'x' is the age of their sister
Step-by-step explanation:
The relationship between the ages of the brothers are;
Sam's age + Dean's age = Their sister's age
Dean's age + 10 = Dean's age + Sam's age
Therefore, we have;
Sam's age = Dean's age + 10 - Dean's age = 10
Sam's age = 10 years
Let 'x' represent their sisters age, we get;
Sam's age + Dean's age = x
10 + Dean's age = x
Dean's age (in variable form) = x - 10
Solve the oquation on the interval (0,2π). Do fot use a calculator. sin3x+sinx+ √3 cosx=0 Select the correct choice below and, it necessary, fill in the answer box to complote your choice. A. x= (Simplify your answet. Type an exact answer, using n as needed. Use integers or fractions for any numbers in the expression. Use a comma to separate answers as needed) B. There is no solution.
The correct choice is A. x = π/6 + nπ (where n is an integer).
The given equation is sin3x+sinx+ √3 cosx = 0. We need to solve the equation on the interval (0, 2π). Using the trigonometric identity, we can write sin3x = 3sinx - 4sin³x. Substitute this in the given equation. 3sinx - 4sin³x + sinx + √3 cosx = 0.
Combine the like terms. 3sinx + sinx - 4sin³x + √3 cosx = 0 .Simplify the equation. 4sinx(1 - sin²x) + 4cosx(sin60°) = 0sinx(1 - sin²x) + cosx(sin60°) = 0sinx(1 - sin²x) + cosx(√3/2) = 0. Divide throughout by cos x.sin x(1 - sin²x)/cos x + (√3/2) = 0tan x(1 - sin²x) = - (√3/2)tan x = - (√3/2) / (1 - sin²x).
Now, we know that the interval lies between 0 to 2π. That is 0 ≤ x < 2π.To find the solution, we need to find all the possible values of x. Thus, let's solve the equation for x as follows. tan x = - (√3/2) / (1 - sin²x)tan x = - (√3/2) / cos²xUse the identity, tan²x + 1 = sec²x.
We get sec²x = cos²x + sin²x/cos²x. We can write tan x as sin x / cos x.tan²x + 1 = sin²x/cos²x + 1sin²x/cos²x + cos²x/cos²x = sec²xsin²x + cos²x = 1sin²x = 1 - cos²x. Now, substitute this in the equation. We get, tan²x + 1 = sin²x/cos²x + 1tan²x = (1 - cos²x)/cos²x + 1tan²x = 1/cos²x.
Thus, we have, tan x = - (√3/2) / cos²xWe know, tan²x = 1/cos²xOn substituting, we get, (1/cos²x) = 3/4cos²x = 4/3. Taking the square root on both sides, cos x = ± 2 / √3sin x = ± √(1 - cos²x) = ± √(1 - 4/3) = ± √(−1/3). Note that sin x cannot be positive.
Thus,sin x = - √(1/3)cos x = 2/√3. The possible value of x is thus,π/6 + nπ, where n is an integer.Thus, the solution is given by,x = π/6 + nπ (where n is an integer)Hence, the correct choice is A. x = π/6 + nπ (where n is an integer).
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a check or quadrangle is defined by the intersection of pairs of
A check or quadrangle is defined by the intersection of pairs of diagonals of a parallelogram.
What is a parallelogram?A parallelogram is a quadrilateral with two pairs of parallel sides. In a parallelogram, the opposite sides are parallel and have the same length. The opposite angles of a parallelogram are equal. A parallelogram is a unique type of quadrilateral with specific characteristics.
What is a check or quadrangle?A quadrangle or check is defined as the intersection of pairs of diagonals of a parallelogram. In other words, it is the area inside the parallelogram that is divided into four triangles, each of which shares a common vertex in the center of the parallelogram.
The diagonals of a parallelogram are the line segments that connect the opposite vertices of a parallelogram. When these diagonals intersect, they form four triangles, which are also known as the parallelogram's "sub-triangles." The point where the diagonals intersect is called the center of the parallelogram, and it divides each diagonal into two equal parts.
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Given f(x) = 5x – 3, find f(-3) )
Answer:
-18
Step-by-step explanation:
-3*5=-15
-15-3=-18
Answer: -18
Step-by-step explanation:
Substitute x for -3
5(-3)-3
-15-3
-18
Suppose bob's exam score was at the 80th percentile on an exam whose mean was 90. what was bob's exam score?
The mean score of 90, and percentile of Bob's score of 80, gives Bob's exam score as approximately 92.5%
What is the formula that gives the exam score from the percentile?The Z-Score of the 80th percentile is 0.8416
The formula for Z-Score is presented as follows;
\(z = \frac{x - \mu}{ \sigma} \)
Where;
\( \sigma = The \: standard \: deviation\)
\( \mu = The \: mean = 90\%\)
x = The given score
Taking the mean as a proportion, we have;
\( \sigma = \sqrt{\frac{\mu \cdot (1-\mu)}{n}}\)
Which gives;
\( \sigma = \sqrt{\frac{0.9 \times (1-0.9)}{100}}= 0.03\)
Therefore, when z = 0.8416, gives;
\(0.8416 = \frac{x - 0.9}{ 0.03} \)
x = 0.8416 × 0.03 + 0.9 ≈ 0.925
Therefore;
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R, S, Q and P are the midpoints of OC, CB, BA and OA respectively.
OR = a, CS = b and OP = c
А
Show that RS is parallel to PQ
We know that RS is parallel to PQ by comparing RS and PQ and both vector have the same value and hence prove to be parallel.
We know that R, S, Q and P are midpoints of OC, CB, BA and OA, and we are given that OR = a, CS = b and OP = c
we have to prove that RS is parallel to PQ,
therefore we need to find, PQ = PA + AQ,
= c - c + a + b = a + b,
since we get that PA = OP = c
therefore when we compare RS and PQ ,we get,
RS = PQ = a + b
now that it is clear that both the vectors are same and have the same value we can conclude that they are parallel.
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After reviewing the generated schedule on Wednesday, you notice your Pharmacy Technician, Abigail Gibson, isn't being scheduled at all during the week. Which of the following would cause this?
O Minimum Base Hours set to 10
O Availability is not entered
O Workstation Proficiencies are set to "low" for all Workstations
After reviewing the generated schedule on Wednesday, you notice your Pharmacy Technician, Abigail Gibson, isn't being scheduled at all during the week. The option that will cause this is B. Availability is not entered
Who are Pharmacy technicians?Pharmacy technicians check inventory and fill prescriptions. Pharmacy assistants assist pharmacists in dispensing prescription drugs to patients or medical professionals. Hospitals and retail pharmacies are where they primarily work.
In order to assist and support patients and guarantee they receive the best care, pharmacists collaborate with pharmacy technicians, who are medical professionals.
In addition to primary care, educational, military, or veterinary practices, pharmacy technicians can work in community (retail) pharmacies, hospital pharmacies, pharmaceutical production or sales in the pharmaceutical industry, prisons, and community (retail) pharmacies.
Based on the information illustrated, the correct option is B.
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A study showed a correlation between the number of umbrellas sold at a local store and the number of days of inside recess at the nearest
school
Which lurking variable would explain the correlation between the number of umbrellas sold and the number of days of inside recess?
Answer:
The price of umbrellas at the store.
Answer:
The person above me is right
Step-by-step explanation:
The area of a rectangle can be expressed by
2x^2 - 7x - 4
If the rectangle has an area of 45, find the positive value for x
In the tournament described in Exercise 11 of Section 2.4, a top player is defined to be one who either beats every other player or beats someone who beats the other player. Use the WOP to show that in every such tournament with n players n∈ N, there is at least one top player.
Using the Well-Ordering Principle (WOP), it can be proven that in every tournament with n players (where n is a natural number), there is at least one top player, defined as someone who either beats every other player or beats someone who beats the other player.
We will prove this statement by contradiction. Assume that there exists a tournament with n players where there is no top player. This means that for each player, there exists either another player who beats them or a chain of players such that each player beats the next one. Now, consider the set S of all players in this tournament. Since S is a non-empty set of natural numbers, it has a least element, let's say k.
Now, player k either beats every other player in the tournament, making them a top player, or there exists a player, let's say player m, who beats player k. In the latter case, we have a chain of players: k, m, p_1, p_2, ..., p_t, where p_1 beats p_2, p_2 beats p_3, and so on until p_t.
However, this contradicts the assumption that there is no top player, as either player k beats every other player (if m does not exist), or player m beats someone who beats the other player (if m exists). Hence, by contradiction, we have shown that in every tournament with n players, there is at least one top player.
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The graph of f(x) and g(x) are shown below. How many solutions does the system of equations have?
Click pic to see whole problem
Answer:
Step-by-step explanation:
Solving systems of equations gives the points of intersection when the equations are graphed.
The answer is 3.
QUESTION
\( {45}^{4} + {72}^{3} \)
note: bye, i'm go back to Indonesian server. my rank in Indonesian server is ace. si hebat=ace
Step by step explanation:
4100625+373248
so the answer is;
4473873
answer in Alternative Form
4.473873x10⁶
trust my answer and liked and make it brainliest please
What is the end behavior of thegraph of the polynomial function y=7x^ 12 -3x^ 8 -9x^ 4 ?
Answer: D
Step-by-step explanation:
Since the overall degree of the function is even and there are no domain restrictions, but the leading coefficient, 7, is odd the end behavior is:
\(\mathrm{a\\s}\:x\to \:+\infty \:,\:f\left(x\right)\to \:+\infty \:,\:\:\mathrm{and\:as}\:x\to \:-\infty \:,\:f\left(x\right)\to \:+\infty \:\)
Did I get this right? Please help I’ll give brianlist
Answer:yes
Step-by-step explanation:
Answer:
it should be something like 3.75/1 because she walks a distance of 3.75 over the span of 1 hour... So I think its 3.75, not 1/3.75.
GENERALIZATION:
From our lesson,
1.) How did you get the sum of integers with like signs?
________________________________________________________________________________________________
2.) How did you get the sum of integers with unlike signs?
________________________________________________________________________________________________
Answer:
check the explanation
Step-by-step explanation:
1. To find the sum of two integers with like signs simply add them and keep the sign same as integers
for example:
\(2 + 3 = 5 \\ - 2 + ( - 3) = - 5\)
2. To find the sum of the integers with unlike signs just subtract them and then keep the sign of the bigger integer.
For example:
\( - 3 + 5 = 2 \\ - 5 + 3 = - 2\)
Can someone Please Help
Answer:
4
Step-by-step explanation:
2 to the power of 4 is the same as 2×2×2×2.
That is also the same as 4×4, which equals 16.
Answer:
4
Step-by-step explanation:
The expression 15h + 216 represents the approximate amount of money a family spends at an amusement park in a day, where h is number of hours the family stays at the park. About how much can a family expect to spend if it stays 6.5 hours?
Please help!
Answer: $313.50
Step-by-step explanation:
6. A road runs 1,200 feet from X to Y and then makes a right angle to Z, a distance of 500
ft. A new road is being built to connect X and Z. How much shorter wilt the new road
be?
Answer:
400 ftStep-by-step explanation:
Use the Pythagorean to find the distance XZ:
\(XZ=\sqrt{XY^2+YZ^2} =\sqrt{1200^2+500^2} =\sqrt{1690000} =1300\)The difference of the distance is:
1200 + 500 - 1300 = 400 ftWhat is the solution to the linear equation? Show your work.
-12 + 3b - 1 = -5 - b
Answer:
b = 2
Step-by-step explanation:
Original Equation:
-12 + 3b - 1 = -5 - b
Add b to both sides
-12 + 4b - 1 = -5
Add 12 to both sides
4b - 1 = 7
Add 1 to both sides
4b = 8
Divide both sides by 4
b = 2
Hope this is what you need :)
Answer: d on edge
Step-by-step explanation:
12 x 1/4 thats all I need thanks
Answer:
3
Step-by-step explanation:
Jim and Pam are conducting an experiment to determine whether temperature influences learning. They train 20 rats to press a lever in an operant chamber to receive food pellets. For one group of 10 rats, the ambient temperature in the room during each session is held constant at 70 degrees Fahrenheit, and for the remaining group of 10 rats, the temperature during each session is held constant at 85 degrees Fahrenheit. For the group that experienced the 70 degrees Fahrenheit condition, 80 percent of the rays emitted more than one response per second in each hour-long session. For the group that experienced the 85 degrees Fahrenheit condition, 50 percent of the rays emitted more than one response per second in each hour-long session. Jim and Pam estimate that 80 percent of all rats trained on this task in 70 degrees Fahrenheit temperature would emit more than one response per second. Based on the information provided, 80 percent is being used as a(n):
The correct option is the third option, which states that 80 percent is being used as a hypothesis.
A hypothesis is a tentative assumption that is made to test a prediction. A hypothesis can be confirmed or refuted based on the results of an experiment.
In the given problem, Jim and Pam conducted an experiment to find out whether temperature affects learning.
20 rats were trained to press a lever in an operant chamber to obtain food pellets.
For one group of 10 rats, the ambient temperature in the room during each session is held constant at 70 degrees Fahrenheit, and for the remaining group of 10 rats, the temperature during each session is held constant at 85 degrees Fahrenheit. For the group that experienced the 70 degrees Fahrenheit condition, 80 percent of the rats emitted more than one response per second in each hour-long session, while for the group that experienced the 85 degrees Fahrenheit condition, only 50 percent of the rats emitted more than one response per second in each hour-long session.Jim and Pam estimated that 80 percent of all rats trained on this task in 70 degrees Fahrenheit temperature would emit more than one response per second.
Based on the information provided, 80 percent is being used as a hypothesis or predicted value that Jim and Pam had before conducting the experiment. Therefore, the correct option is the third option, which states that 80 percent is being used as a hypothesis. A hypothesis is a tentative assumption that is made to test a prediction. A hypothesis can be confirmed or refuted based on the results of an experiment.
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know the concept of random variable and know how to use proper notations to represent them (where does the randomness come from?)
The x is a specific value that the variable can take on.
A random variable is a variable that has a numerical value, which is determined by the result of a random experiment. The numerical value is determined by a set of probabilities, which are associated with each possible outcome of the experiment. Random variables can be classified as discrete or continuous, depending on the type of outcomes that they can have. Examples of random variables include the number of heads in a series of coin tosses, the time until a traffic light changes from red to green, and the height of a randomly selected person.The randomness of a random variable comes from the fact that the outcome of the experiment that it represents is uncertain. The uncertainty arises because the experiment is subject to the effects of chance, rather than being completely determined by fixed physical laws or other deterministic factors. Because of this, it is not possible to predict with certainty what the value of a random variable will be, even if we know the probabilities associated with each possible outcome.There are many different notations that can be used to represent random variables, depending on the context and the preferences of the person using the notation. Some of the most common notations include X, Y, and Z, as well as Greek letters such as µ, σ, and ρ. When a random variable is discrete, it is often represented using a probability mass function, which is denoted by P(X=x), where x is a specific value that the variable can take on. When a random variable is continuous, it is often represented using a probability density function, which is denoted by f(x), where x is a specific value that the variable can take on.
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A computer was regularly priced at $1,500. If you order the computer online, you can save money as the price is only $1,200.
What percent discount are you getting?
A 2.0%
B 0.20%
C 200%
D 20%
Need help !!!!!!!! #6
Answer:
C
Step-by-step explanation:
Boris is selling pirate hats. If he sells the hats for $50 he will sell 135 hats.
For each increase in price of $2 he will sell 3 fewer hats.
Determine the possible prices he could charge to earn $6486 or more.
Answer:
Current price $50eax135hats= $6750
Step-by-step explanation:
If he sells the hats at $52 he sells 3 less hats so $52x132=$6864
if he sells the hats at $54 he has 6 less hats= 54x129=6966 etc
$56 x 126=$7056
10) The ratio of boys to girls in Mrs. Ronilo's math class is 3 to 1. What PERCENT of the class is girls
Answer:
25%
Step-by-step explanation:
ratio is 3B : 1G (this means, out of 4 sections, 3 are boys and 1 are girls)
this means that 3/4 of class is boys and 1/4 are girls
1/4 equals 25%