Answer: A. y=x²-9x+20
Step-by-step explanation:
As we can see from the graph there are two x-intercepts: (4,0) (5,0)
The easiest way we can do, is we plug these two values into each of the choices.
A. y=x²-9x+20
(4, 0) YES
(5,0) YES
B. y=x²-8x+18
(4, 0) NO
(5, 0) NO
C. y=x²+9x+20
(4, 0) NO
(5, 0) NO
D. y=x²+x-12
(4, 0) NO
(5, 0) NO
Therefore, the answer should be y=x²-9x+20
Hope this helps!! :)
Please let me know if you have any questions
Plz solv this please guys
Answer:
x is 130 degrees. y is 80 degrees.
Step-by-step explanation:
Step-by-step explanation:
since ABCD is a Rhombus, x = 180-50 = 130°
y = 180-(50+50)= 80°
Please answer my question quickly.
Answer:
b=sqrt7
Step-by-step explanation:
16=9+b^2
Determine whether the binomial (x-4) is a factor of the polynomial p(x) = 5x³ - 20x² - 5x+ 20-
Step-by-step explanation:
IF x-4 is a factor, then putting in x = + 4 will make the polynomial = 0
5 ( 4^3) - 20 (4^2) - 5(4) + 20 = 0 Yes...it is a factor
\(x - 4 = 0 \\ x = 4 \\ \)
substitute value of x in the function to see if it equals to zero , if not it won't be a factor of the function
\(5 {x}^{3} - 20 {x}^{2} - 5x + 20 = 0 \\ 5(4) ^{3} - 20( {4})^{2} - 5(4) + 20 = 0 \\ 5(64) - 20(16) - 20 + 20 = 0 \\ 320 - 320 - 20 + 20 = 0 \\ 0 = 0\)
so (x-4) is a factor for the function
I need help on this one question, anyone know the answer?
The sum of 3 consecutive even
numbers is 78.
Write the variable representation for each of
the three numbers in this sequence.
Answer:
The variable representation is x, x+2 and x+4 for this sequence.
Step-by-step explanation:
Given that:
The sum of 3 consecutive even numbers is 78.
Let,
The first even number is represented by x.
As the numbers are consecutive, thus,
First even number = x
Second even number = x+2
Third even number = x+4
Hence,
The variable representation is x, x+2 and x+4 for this sequence.
At cycle and sport, customers can rent bikes, electric scooters, kayaks, canoes or paddleboards by the hour. Ari is renting a bike, meg is renting a electric scooter.
Answer:
Option A, 9b + 10s is correct
Step-by-step explanation:
The complete question is
At cycle and sport customers can rent bikes, electric scooters, kayaks, canoes, or paddleboards by the hour. Ari is renting a bi ke, and meg is renting an electric scooter. Which expression represents the total cost for Ari to rent a bike for b hours and Meg to rent a scooter for s hours (Please answer ASAP) A. 9b + 10s B. 9 + 10 C. (9+b) + (10 + s) D. 9 + 10 x b + s
Solution
The price of renting a bike for one hour is $9
The price of renting a scooter for one hour is $10
Given -
Ari rents a bike for b hours and Meg rents a scooter for s hours
Total cost of renting a bike is 9 * b
Total cost of renting a scooter is 10* s
The total cost of renting both the bike and scooter is
9b + 10s
Hence, option A is correct
What’s the value of x
Answer:
C: X = 42
Step-by-step explanation:
Find each part to the triangle first
What is your favorite marvel character?
OR
What is your favorite Percy Jackson character?
10 points!
Answer:
nico
Step-by-step explanation:
Add ( 2y + 2 ) + ( 3x + 9)
Answer:
2y + 3x + 11
Step-by-step explanation:
I'm not sure..
Suppose that the scores of golfers on the PGA tour have a mean of 67.15 and a standard deviation of 3.084. A random sample of 30 is taken from the population. What is the distribution of the sample mean
The distribution of the sample mean can be represented as: X ~ N(67.15, 3.084/√30)
The distribution of the sample mean is a normal distribution with a mean equal to the population mean µ and a standard deviation equal to the population standard deviation σ divided by the square root of the sample size n.
Therefore, for this problem, the distribution of the sample mean can be represented as:
X ~ N(67.15, 3.084/√30)
where X is the sample mean, N represents a normal distribution, 67.15 is the population mean, 3.084 is the population standard deviation, and √30 is the square root of the sample size.
This distribution assumes that the sample is randomly selected from the population and the sample size is large enough to satisfy the central limit theorem.
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Suppose we have the following cubic cost function: C=90+35Q+25Q^2
+10Q^3
What is the value of average total cost when Q=2 ?
$170
$250
$340
$125
The average total cost can be found by dividing the total cost by the quantity produced. In this case, the total cost function is given as C = 90 + 35Q + 25Q^2 + 10Q^3, and we want to find the average total cost when Q = 2.
To find the average total cost, we need to calculate the total cost when Q = 2. Plugging Q = 2 into the cost function, we get:
C = 90 + 35(2) + 25(2^2) + 10(2^3)
C = 90 + 70 + 100 + 80
C = 340
Next, we divide the total cost by the quantity produced:
Average Total Cost = Total Cost / Quantity
Average Total Cost = 340 / 2
Average Total Cost = 170
Therefore, the value of average total cost when Q = 2 is $170.
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which letter would be the most meaningful variable for the problem situation the weight of a box increase by 5
Answer:i
Step-by-step explanation:
A scientist uses a submarine to study ocean life.
She begins at sea level, which is an elevation of 0 feet.
She travels straight down for 68 seconds at a speed of 0.8 feet per second.
She then ascends for 11 seconds at a speed of 3.8 feet per second.
Answer:
-11.8
Step-by-step explanation:
68x0.8
11x3.8
11x3.8=41.8
68x0.8=54.4
54.4-41.8=12.6
Now minus add a minus to it and you get -12.6 FT
Please help!
Identify the slope of the function: f(x)=2(3x-7)
A:3
B:6
C:7
D:2
Answer:
The slope is 6
Step-by-step explanation:
f(x)=2(3x-7)
Distribute the 2
f(x)=2*3x-2*7
f(x) = 6x -14
This is in slope intercept form
y = mx+b where m is the slope and b is the y intercept
The slope is 6 and the y intercept is -14
The slope is 6
Mr. and Mrs. Happychuck had a healthy baby boy named Chuck who weighed 7.5 pounds at birth. At the end of 4 months, the baby weighed 13.5 pounds. What is Chuck's weight age ratio at 4 months? (Call on a student to answer; the ratio is 13.5 pounds to 4 months or (13.5)/4. It is important to make sure that the students always mention the units involved, in this case pounds and months. Then ask the students to calculate the rate of change of Chuck's weight, that is, how much he gained per month. Ask a volunteer to go to the board and do the work.
PLEASE I NEED HELP! I DESPERATELY NEED ALL OF THE WORK OUT TO THIS PROBLEM< PLEASE
Answer:
(13.5)/4 = 3.375
step-by-step explanation
a two-tailed hypothesis test for a population mean is to be performed at the 1% level of significance. the population standard deviation is known. true or false: the critical values are the two which divide the area under the standard normal curve into a middle 0.98 area and two outside areas of 0.01.
The given statement is false.
In a two-tailed hypothesis test for a population mean, where the population standard deviation is known, the critical values are the values that divide the alpha (significance level) into two equal-tailed regions.
For a 1% level of significance (alpha = 0.01), a two-tailed test allocates half of the alpha to each tail of the distribution. In this case, each tail will have an area of 0.01/2 = 0.005.
The critical values are determined by the standard normal distribution (z-distribution) or by the t-distribution (if the sample size is small and the population standard deviation is unknown). These critical values represent the number of standard deviations away from the mean that correspond to the desired level of significance.
The specific critical values will depend on the sample size, distribution type (z or t), and the desired level of significance. To obtain the critical values, one would consult a standard normal distribution table or a t-distribution table, depending on the case.
In summary, the critical values in a two-tailed hypothesis test do not necessarily divide the area under the standard normal curve into a middle 0.98 area and two outside areas of 0.01. The allocation of the alpha (significance level) is determined based on the desired level of significance, and the critical values are obtained from the appropriate distribution table.
Therefore, the given statement is false
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find the area of the surface. the part of the sphere x2 y2 z2 = a2 that lies within the cylinder x2 y2 = ax and above the xy-plane
The area of the part of the sphere x² + y² + z² = a² that lies within the cylinder x² + y² = ax and above the xy-plane.
Step 1: Determine the intersection curve
To find the region on the sphere that lies within the cylinder, we need to determine the points where the sphere and the cylinder intersect. By substituting the equation of the cylinder into the equation of the sphere, we can find the points of intersection.
Substituting x² + y² = ax into x² + y² + z² = a², we have:
(ax) + z² = a²,
z² = a² - ax,
z = ±√(a² - ax).
Step 2: Set up the integral
To find the area of the surface, we'll use a double integral over the region of interest. Since we're dealing with surfaces, it's convenient to express the area element in terms of the cylindrical coordinates (r, θ, z).
The area element in cylindrical coordinates is given by dA = r dz dθ.
Step 3: Define the limits of integration
To set up the limits of integration, we need to consider the region of interest.
Therefore, the limits of integration are:
For θ: 0 ≤ θ ≤ 2π (since we want to integrate over the entire circle)
For r: 0 ≤ r ≤ a (to stay within the sphere)
For z: 0 ≤ z ≤ √(a² - ax) (to stay above the xy-plane and below the sphere)
Step 4: Evaluate the integral
Now, we can set up and evaluate the double integral using the defined limits of integration:
Area = ∫∫r dz dθ.
Integrating with respect to z:
Area = ∫[0 to 2π] ∫[0 to a] r √(a² - ax) dr dθ.
Evaluating this integral will give us the desired area.
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If your grade is a 68.9 and you have an assignment that is worth 100% how much would it take off your grade
If the assignment is worth 100%, then it would completely replace the current grade you have.
How to describe your grade ?If you have an assignment worth 100% of your grade, it means that the assignment will completely replace your current grade. In this case, your current grade of 68.9 is not relevant, as the new assignment will determine your final grade.
If you're asking how much you need to score on the assignment to maintain or improve your current grade of 68.9, you would need to score at least 68.9% on the assignment to maintain your current grade or score higher to improve your grade.
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Find the area of the parallelogram whose vertices are listed below. (-2, 0), (0, 3), (1, 3), (-1, 0).
The formula A = | ax (by - cy) + bx (cy - ay) + cx (ay - by) | / 2 is used to find the area of a parallelogram whose vertices are given. The vertices are (-2, 0), (0, 3), (1, 3), and (-1, 0). The area of the parallelogram is 11/2 square units.
To find the area of a parallelogram whose vertices are given, we use the formula
A = | ax (by - cy) + bx (cy - ay) + cx (ay - by) | / 2 .
Here, ax and ay are the x and y coordinates of vertex A, bx and by are the x and y coordinates of vertex B, and cx and cy are the x and y coordinates of vertex C. Given the vertices are (-2, 0), (0, 3), (1, 3), and (-1, 0).We will use the above formula to find the area of the parallelogram.
Area = |(-2(3)-0(1)+1(0)) + (0(0)-3(-1)+(-1)(-2))|/2
=|(-6+0+0)+ (0+3+2)|/2
=11/2 square units.
Hence, the area of the parallelogram whose vertices are (-2, 0), (0, 3), (1, 3), and (-1, 0) is 11/2 square units.
Therefore, the answer is: The area of the parallelogram whose vertices are (-2, 0), (0, 3), (1, 3), and (-1, 0) is 11/2 square units.
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9. Mrs. Sorenstam bought one ruler, one compass, and one mechanical pencil at the prices shown in the table for each a. Suppose Mrs. Sorenstam had 36 cents left after buying the school supplies. Write an equation to find the amount of money Mrs. Sorenstam initially had to spend on each student. b. Describe a two-step process you could use to solve your equation. 5020 02/03 Due Price ($) Item 1.49 of her 12 students. compass 0.59 mechanical pencil 0.49 ruler Then solve the equation.
Let A be the total amount of money that Mrs. Sorenstam had before buying the school supplies. Let C be the unit price of the compass, M the unit price of the mechanical pencil and R the unit price of the ruler.
The total amount of money required for the school supplies of one student, is C+M+R. Since there are 12 students, the total amount of money required for school supplies is:
\(12(C+M+R)\)Since Mrs. Sorenstam had a total A of money and she bought the school supplies for 12 students, with 36 cents left after the transaction, then:
\(A-12(C+M+R)=0.36\)Since C=1.49, M=0.59 and R=0.49, then:
\(\begin{gathered} C+M+R=1.49+0.59+0.49 \\ =2.57 \end{gathered}\)Then, our equation is equivalent to:
\(A-12\times2.57=0.36\)which is the equation that we may write for the first part of the problem.
For the second part, one step is to multiply 12 times 2.57, and then add the result to both sides of the equation to solve for A:
1.- Multiply 12 times 2.57:
\(A-30.84=0.36\)2.- Add 30.84 to both sides of the equation:
\(\begin{gathered} A-30.84+30.84=0.36+30.84 \\ \Rightarrow A=31.2 \end{gathered}\)The attack on ghostnet began with ________. question 21 options: a) a wireless vulnerability b) a social engineering attack c) malicious mobile code d) an insider attack
The attack on GhostNet commenced with a social engineering attack. Social engineering is a tactic employed by malicious actors to exploit human vulnerabilities rather than technical weaknesses.
In the case of GhostNet, the attackers strategically crafted deceptive methods, such as targeted phishing emails, to deceive unsuspecting individuals. By manipulating recipients into clicking on malicious links or divulging sensitive information, the attackers gained unauthorized access to systems and initiated the attack.
This initial phase of the attack leveraged psychological manipulation and manipulation of human trust to breach security defenses. Subsequently, the attackers may have employed additional techniques, such as exploiting wireless vulnerabilities, deploying malicious mobile code, or possibly utilizing insider knowledge. However, the primary point of entry in the GhostNet attack was through a social engineering attack.
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8) Which of the following is equivalent to 33 + 77
2 points
3(11 + 7)
3 X 11) X (7 X 11)
7(3 + 11)
11( 3 + 7)
6. Simplify:
√900+ √0.09+√0.000009
The simplified value of the expression √900 + √0.09 + √0.000009 is 30.303.
To simplify the given expression, let's evaluate the square roots individually and then perform the addition.
√900 = 30, since the square root of 900 is 30.
√0.09 = 0.3, as the square root of 0.09 is 0.3.
√0.000009 = 0.003, since the square root of 0.000009 is 0.003.
Now, we can add these simplified values together
√900 + √0.09 + √0.000009 = 30 + 0.3 + 0.003 = 30.303
Therefore, the simplified value of the expression √900 + √0.09 + √0.000009 is 30.303.
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Which of the following characteristics a random variable (RV) must have in order to be considered as a Bernoulli trial in the context of the Bernoulli and Binomial distributions? Have more than one answer, select all that apply
a.The RV must take value 0 or 1 with equal probability
b.The RV can only take two values
c.The RV results in a success with probability p and in a failure with probability 1-p
d.The RV can only take integer values
The correct answers are: The RV can only take two values and the RV results in a success with probability p and in a failure with probability 1-p.
A Bernoulli trial is a random experiment that can result in one of two outcomes, usually referred to as success (S) or failure (F). A random variable that represents the outcome of a Bernoulli trial can only take two values, typically denoted by 1 for success and 0 for failure. The probability of success is denoted by p, and the probability of failure is 1-p.
Therefore, options a and d are incorrect, as they do not necessarily apply to a Bernoulli trial. The RV does not have to take value 0 or 1 with equal probability, and it does not have to be an integer variable.
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Leslie has 6 bags of marbles. Each bag has 16 marbles. If
1
3
3
1
of the marbles are purple, how many purple marbles does Leslie have?
The quantity of purple marbles that Leslie has would be = 32 purple marbles.
How to calculate the quantity of purple marbles Lesile have?The number of bags of marbles that Leslie has = 6 bags.
The quantity of marbles that is found in each bag = 16 marbles.
Therefore the total number of marbles = 6× 16 =96 marbles.
The fraction of purple marbles that Leslie has = 1/3 of 96
Therefore the total number of purple marbles the Leslie have = 1/3× 96 = 32
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Complete question:
Leslie has 6 bags of marbles. Each bag has 16 marbles. If ⅓ of the marbles are purple, how many purple marbles does Leslie have?
$60 simple interest is received on a loan each year. When the rate of interest is increased by 0.5%, the simple interest is $70. What is the amount of the loan?
Answer:
Step-by-step explanation:
I=Pr
P(r+.005-r)=70-60
.005P=10
P=$2000
Answer:
Step-by-step explanation:
$60 simple interest is received on a loan each year. When the rate of interest is increased by 0.5%, the simple interest is $70. What is the amount of the loan?
Given that a function, g, has a domain of -20 ≤ x ≤ 5 and a range of -5 ≤ g(x) ≤ 45 and that g(0) = -2 and g(-9) = 6, select the statement that could be true for g.
Thw statement that's true for the function g is g(-13) = 20.
How to illustrate the information?From the information given, the function, g, has a domain of -20 ≤ x ≤ 5 and a range of -5 ≤ g(x) ≤ 45.
In this case, g(-13) = 20. Here, x = -13 is in the domain and 20 is also in the range. Therefore, this is true for g.
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The function f(x)is shown in the graph.
What is the equation for f(x)?
Answer:
(-5/6)x - 1
Step-by-step explanation:
the equation is given by: y = mx + b
m = slope
b = y intercept
m = -5/6
y intercept = -1
f(x) = (-5/6)x - 1
Describe the steps you can use to find an average of
fractional amounts.
How many positive integers less than 1000 are 6 times the sum of their digits ?.
Only 1, 54.
There are obviously no such 1-digit numbers (1 - 9).
Let n = ab be a 2-digit number whose value is 6 times its digit sum, meaning
n = 10a + b = 6 (a + b)
Then
10a + b = 6a + 6b
4a = 5b
Now, 4 and 5 are coprime, so for equality to hold, a must be a multiple of 5 and b must be a multiple of 4.
The only valid multiple of 5 is 5 itself:
• a = 5 ⇒ 5b = 20 ⇒ b = 4
There are 2 multiples of 4 to check. The first one gives the same result as a = 5.
• b = 8 ⇒ 4a = 40 ⇒ a = 10
but a must be 1-digit.
So among the 2-digit numbers, only 1 such number exists, n = 54.
Let n = abc be a 3-digit number satisfying the criterion. Then
n = 100a + 10b + c = 6(a + b + c)
100a + 10b + c = 6a + 6b + 6c
94a + 4b = 5c
c must be a number from 1-9, which means at most 5c = 5•9 = 45.
If we take the smallest possible values of a and b, we have
94•1 + 4•0 = 94
but the smallest value of 94a + 4b is larger than the largest value of 5c.
So there are no such 3-digit numbers.