The equation of the quadratic function is (c) f(x) = 3(x - 1)² - 2
How to determine the equation of the quadratic function?From the question, we have the table of values that can be used in our computation:
A quadratic equation is represented as
f(x) = a(x - h)² + k
Where
Vertex = (h, k)
From the graph, we have the vertex to be
(h, k) = (1, -2)
Substitute (h, k) = (1, -2) in f(x) = a(x - h)² + k
So, we have
f(x) = a(x - 1)² - 2
Also, from the graph, we have the point (0, 1)
This means that
a(0 - 1)² - 2 = 1
So, we have
a(1) = 3
Divide both sides by 1
a = 3
Substitute a = 3 in f(x) = a(x - 1)² - 2
f(x) = 3(x - 1)² - 2
Hence, the equation is f(x) = 3(x - 1)² - 2
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The length of the hypotenuse of a 30°-60°-90° triangle is 11. What is the perimeter?
O
A. 11 33
- + 3
2 2
B. 33 11
+
2 2
C. 11 + 33 3
D. 33 + 11 5
Answer:
B
Step-by-step explanation:
Using pythagoras theorem
Add or subtract the following mixed numbers. First change each mixed number to an equivalent improper fraction. Then find a common denominator, and proceed as before. Leave your answer as an improper fraction. Be sure your answers are reduced to lowest terms. 3 1/4 + 6 1/2
In terms of the calculation, the answer is 39/4 in improper fraction.
What is an improper fraction?An improper fraction has a denominator that is greater than or equal to the numerator. Based on the numerator and denominator values, proper fractions and improper fractions are the two main types of fractions in mathematics.
What is a mixed fraction?A mixed fraction is a fraction formed by combining a natural number and a proper fraction. It is a shortened version of an improper fraction.
The given equation is \(3\frac{1}{4}\) + \(6\frac{1}{2}\) .
Taking 4 as LCM from the above equation.
\(3\frac{1}{4}\) + \(6\frac{1}{2}\) = (13/4) + (13/2)
\(3\frac{1}{4}\) + \(6\frac{1}{2}\) = (13+26)/4
\(3\frac{1}{4}\) + \(6\frac{1}{2}\) = 39/4
Now, since the solution must be proffered in an improper fraction.
Therefore, the obtained improper fraction is 39/4.
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What is the slope of the line that passes through the points (-10, 9)(−10,9) and (-12, 7) ?(−12,7)
Answer:
The slope is 1
Step-by-step explanation:
Equation of the line:
y = x + 19
which set of data has the strongest linear association
Subtract -2x² from the sum of 4x² and 15x².
Answer:
Step-by-step explanation:
(4x²+15x²)-(-2x²)=19x²+2x²=21x²
Answer:
\(21x^{2}\)
Step-by-step explanation:
\(4x^{2} +15x^{2} --2x^{2}\)
\(4x^{2} +15x^{2} +2x^{2}\)...........2 negatives signs next to each make a positive
\(21x^{2}\).................................combine like terms
A family on holiday in France exchanged $450 for euros when the
exchange rate was 1.41 euros to the dollar. They spent
500 euros and then changed the rest back into dollars, by which
time the exchange rate had become 1.46 euros to the dollar.
How much did the holiday cost?
Answer:
100 EUR to USD = 108.107 US Dollars.
Step-by-step explanation:
Solve for a
-1/4a- 4=7/4a- 3
Answer:
a=−1/2
Step-by-step explanation:
The sum of the ages of a father and son is 45 years. Five years ago, the product of their ages was four times the fathers age at that time. What is the present ages of father and son?.
The present ages of the father and son are 36 and 9, respectively.
The sum of the ages of a father and son is 45 years. Five years ago, the product of their ages was four times the father's age at that time. To find the present ages of the father and son, we can set up a system of equations.
Let's denote the present ages of the father as "F" and the present age of the son as "S".
From the information given, we have two equations:
Equation 1: F + S = 45 (The sum of their ages is 45)
Equation 2: (F - 5)(S - 5) = 4(F - 5) (Five years ago, the product of their ages was four times the father's age at that time)
To solve this system of equations, we can use substitution or elimination method.
Let's solve it using the substitution method:
From Equation 1, we can express F in terms of S: F = 45 - S
Now, substitute F in Equation 2 with 45 - S:
(45 - S - 5)(S - 5) = 4(45 - S - 5)
Simplify the equation:
(40 - S)(S - 5) = 4(40 - S)
Expand and simplify:
40S - 5S - 200 + 25 = 160 - 4S
Combine like terms:
35S - 175 = 160 - 4S
Add 4S to both sides:
35S + 4S - 175 = 160
Combine like terms:
39S - 175 = 160
Add 175 to both sides:
39S = 335
Divide both sides by 39:
S = 335/39
Simplify:
S ≈ 8.59
Since age cannot be in decimal places, we can approximate the son's age to the nearest whole number:
S ≈ 9
Now, substitute S = 9 into Equation 1 to find the father's age:
F + 9 = 45
Subtract 9 from both sides:
F = 45 - 9
F = 36
Therefore, the present ages of the father and son are 36 and 9, respectively.
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Can you please help ASAP. It is very easy
Hello!
Let the number be x.
We multiply it by 5:
5x
Subtract 3:
5x-3
Hope it helps. Ask me if you have any query.
~An excited gal
\(MagicalNature\) here to help
100 POINTS BRSAINLIEST ASAP 2 MINUTES LEFT
Answer: 12
Step-by-step explanation:
\(\mathrm{The\:mode\:is\:the\:term\:in\:the\:data\:set\:that\:appears\:the\:most.}\)
\(\mathrm{If\:there\:is\:more\:than\:one\:term\:that\:appears\:the\:most,\:then\:there\:is\:no\:mode.}\)
\(\mathrm{Count\:the\:number\:of\:times\:each\:element\:appears\:in\:the\:list}\)
\(\begin{pmatrix}11&13&14&12\\ 1&2&2&3\end{pmatrix}\)
\(\mathrm{The\:most\:common\:element\:in\:the\:list\:is\:12}\)
Answer:
I'm sure It's 12
Step-by-step explanation:
To find the mode, order the numbers lowest to highest and see which number appears the most often.
11, 12, 12, 12, 13, 13, 14, 14
11=1
12=3 is the most common element
13=2
14=2
HELP What's greater -1 17/20 or -1 8/10
Use < or >
Answer:
The answer is -1 17/20 < -1 8/10.
Step-by-step explanation:
If you would calculate it to decimal, you should get:
a) -1 17/20= -1.85 or can be -37/20
b) -1 8/10= -1.8 or can be -9/5 or -1 4/5
As you can see, -1 8/10 has a larger decimal value so the answer would be -1 17/20 < -1 8/10.
Hope this helps and if you can mark this as brainliest. Thanks
Answer:
-1 17/20 < -1 8/10
Step-by-step explanation:
-1 17/20 or -1 8/10
-1 17/20 < -1 8/10
what is necessary to determine the z-score for a raw score in a particular set of scores? a. the highest, lowest, and mean scores for the set b. the mean and standard deviation for the set c. the median x score and the mean for the set d. the number of scores and standard deviation for the set
The z-score measures how many standard deviations a raw score is away from the B) mean. It allows us to compare different data points on a common scale.
To determine the z-score for a raw score in a particular set of scores, the necessary information is the mean and standard deviation for the set.
The mean is the average of all the scores in the set, while the standard deviation measures how spread out the scores are from the mean. The z-score formula is calculated by subtracting the mean from the raw score and then dividing it by the standard deviation.
This gives us a standardized value that indicates how far above or below the mean the raw score is.
The other options mentioned in the question (highest, lowest, median, number of scores) are not required to calculate the z-score. They may be useful for other types of analysis, but for determining the z-score, only the mean and standard deviation are needed.
Hence B option is correct
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(4) let (s) be a sequence satisfying |sn 2 - sn 11 ≤|sn 1-snl for all n € n. e (a) show that sm 1 - sml≤2·2-m|s₂ s₁ for all m e n. | s₁ for all n>m > 1. (b) show that isn - sml≤4.2m|s₂ -
To prove the given statements, we will use the triangle inequality property, which states that for any real numbers a, b, and c:
|a + b| ≤ |a| + |b|
|a - b| ≤ |a| + |b|
(a) To prove sm+1 - sm ≤ 2·2^(-m)·|s₂ - s₁| for all m ∈ ℕ, we will use the given inequality |sn+2 - sn+1| ≤ |sn+1 - sn|.
Let's consider m ∈ ℕ. Using the given inequality, we can write:
|sm+1 - sm| ≤ |sm - sm-1|
≤ |sm-1 - sm-2|
≤ ...
≤ |s₂ - s₁|
Since we have |s₂ - s₁| on the right side, we can substitute it into the inequality:
|sm+1 - sm| ≤ |s₂ - s₁|
Now, we need to prove that |s₂ - s₁| ≤ 2·2^(-m)·|s₂ - s₁|. Let's multiply both sides of the inequality by 2^m:
2^m·|s₂ - s₁| ≤ 2·2^(-m)·|s₂ - s₁|
Since 2^m·2^(-m) = 2^(m-m) = 2^0 = 1, the inequality becomes:
|s₂ - s₁| ≤ 2·2^(-m)·|s₂ - s₁|
Therefore, we have shown that sm+1 - sm ≤ 2·2^(-m)·|s₂ - s₁| for all m ∈ ℕ.
(b) To prove |sn - sm| ≤ 4·2^m·|s₂ - s₁| for all n > m > 1, we can use the same approach as in part (a).
Let's consider n > m > 1. Using the given inequality, we can write:
|sn - sm| ≤ |sn - sn-1|
≤ |sn-1 - sn-2|
≤ ...
≤ |sm+1 - sm|
Using the inequality from part (a), we can substitute it into the inequality:
|sn - sm| ≤ |sm+1 - sm|
≤ 2·2^(-m)·|s₂ - s₁|
Now, we need to prove that 2·2^(-m)·|s₂ - s₁| ≤ 4·2^m·|s₂ - s₁|. Let's simplify this inequality:
2·2^(-m)·|s₂ - s₁| ≤ 4·2^m·|s₂ - s₁|
Since 2^(-m)·2^m = 2^(-m+m) = 2^0 = 1, the inequality becomes:
|s₂ - s₁| ≤ 4·2^m·|s₂ - s₁|
Therefore, we have shown that |sn - sm| ≤ 4·2^m·|s₂ - s₁| for all n > m > 1.
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Which of the following is not a strategy for finding P-values with the Student t distribution? Choose the correct answer below. O Use a TI-83/84 Plus calculator to find the P-value rounded to at least 4 decimal places. O Use the table in the book with the appropriate number of degrees of freedom to find a range of values containing the P-value. O Use software such as Minitab, Excel, or STATDISK to find the P-value rounded to at least 4 decimal places. O Use the table in the book to find the P-value rounded to at least 4 decimal places
Use the table in the book to find the P-value rounded to at least 4 decimal places.
It is not possible to find the exact P-value rounded to at least 4 decimal places by using tables, as the P-value is a continuous variable and tables only give a range of values containing the P-value.
The probability that you would have discovered a specific collection of observations if the null hypothesis were true is expressed as a number called the p value, which is determined from a statistical test.
In order to determine whether to reject the null hypothesis, P values are utilised in hypothesis testing. You are more inclined to reject the null hypothesis the smaller the p value.
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Suppose that there are two types of tickets to a show: advance and same-day. Advance tickets cost $25 and same-day tickets cost
$40. For one performance, there were 40 tickets sold in all, and the total amount paid for them was $1225. How many tickets of
each type were sold?
Choose all equations that are equivalent to the equation: 4x−12y=18
a. 2x−6y=9
b. 8x−24y=36
c. 2x−9y=18
d. y= −3/2x + 1/3x
Answer:
a & b
Step-by-step explanation:
a is the simplified form
b is doubled
hope this helps :)
What are the zeros of this function?
A. x=0 and x=-6
B. x=0 and x=5
C. x=0 and x=-5
D. x=2 and x=-6
Answer:
c i dont know
Step-by-step explanation:
Answer:
Definitely not C
Step-by-step explanation:
Melissa can buy an 8 pound bag of dog food for $7.20. Which bag has an equivalent cost?
The MD has placed an order for 15mg of albuterol and 0.5mg of atrovent to be given over one hour. The nebulizer you use has an output of 10ml oer hour when running at 4lmp. How much saline would you need to add to your medication to make it last the full hour?
The volume of the medication required, we subtract it from the nebulizer output to find the amount of saline needed.
To determine the amount of saline needed to make the medication last the full hour, we need to calculate the total volume of medication required and subtract it from the volume delivered by the nebulizer.
Given:
- Albuterol dose: 15 mg
- Atrovent dose: 0.5 mg
- Nebulizer output: 10 mL per hour
- Nebulizer flow rate: 4 LPM (liters per minute)
First, we need to convert the nebulizer flow rate to mL per hour:
4 LPM * 60 min = 240 mL per hour
Next, we calculate the total volume of medication required by adding the doses of albuterol and Atrovent:
Total medication volume = 15 mg + 0.5 mg
Now, we need to convert the total medication volume from milligrams to milliliters. To do this, we need to know the concentration of the medication (mg/mL) or the volume of the medication that corresponds to the given dose. Without this information, we cannot convert the dose to volume accurately.
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In Python
The PDF (probability density function) of the standard normal distribution is given by:
(x)=(1/(√2))*^(-(x^2)/2)
Evaluate the normal probability density function at all values x∈{−3,−2,−1,0,1,2,3}x∈{−3,−2,−1,0,1,2,3} and print f(x) for each
In python, the probability density function (PDF) of the standard normal distribution is given by(x) = (1 / (√2)) * ^ (-(x ^ 2) / 2).\(0.24197072451914337f(0) = 0.39894228040.24197072451914337f(2) = 0.05399096651318806f(3) = 0.00443184841\)
This is also known as the Gaussian distribution and is a continuous probability distribution. It is used in many fields to represent naturally occurring phenomena.Here is the code to evaluate the normal probability density function at all values of\(x∈{−3,−2,−1,0,1,2,3}x∈{−3,−2,−1,0,1,2,3}\) and print f(x) for each.
\(4119380075f(-2) = 0.05399096651318806f(-1) = 0.24197072451914337f(0) = 0.3989422804\)4119380075f(-2) = 0.05399096651318806f(-1) = \(0.24197072451914337f(0) = 0.39894228040.24197072451914337f(2) = 0.05399096651318806f(3) = 0.00443184841\)19380075
This program will evaluate the normal probability density function at all values of \(x∈{−3,−2,−1,0,1,2,3}x∈{−3,−2,−1,0,1,2,3}\)and print f(x) for each.
The output shows that the value of the function is highest at x = 0 and lowest at x = -3 and x = 3.
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Correct answers only!
To the nearest cent, how much interest will she earn in 3 years?
Use the formula B = p(1 + r)t, where B is the balance (final amount), p is the principal (starting amount), r is the interest rate expressed as a decimal, and t is the time in years.
Answer:
1180.12
Step-by-step explanation:
p= 4000
r = 9% =0.09
t =3
plug in into B = p(1 + r)^t
B = 4000(1 + 0.09)^3
B = 4000(1.09)^3
B =5180.116 round to the 2 decimals
B = 5180.12
make the difference between B, the balance (final amount) and p, the principal (starting amount) = 5180.12-4000 =1180.12
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how to solve equations with fractions and variables in the denominator
To solve equations with fractions and variables in the denominator, we need to eliminate it by moving it to the other side. To do this, we multiply both sides of the equation by the term in the denominator. This will cancel out the fraction and leave us with a simpler equation to solve.
For example, suppose we have the equation (3 + x) / x = 2. To get rid of the fraction, we multiply both sides by x. This gives us: x * (3 + x) / x = x * 2. The x in the numerator and denominator cancel out, leaving us with:
3 + x = 2x. Now we can solve for x by subtracting x from both sides: 3 = x
This is the solution of the equation.
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What's the vertex and is it a max or min
Answer:
the vertex is (-2,0), and the max or min is (-2,0)
Marco has a balance of -$19 in his checking account. He makes a trip to the bank to deposit $368. The next day he purchases a new video game for $47 using his debit card. What is Marco’s new balance after he purchases the video game?
i need this done asp
Answer:
His new balance would be $302
The Montoya family and the Cooper family are seeing a movie together in the theater. At the concession stand, Mr. Montoya paid $20 for 3 large popcorns and 1 large drink that his family will share. Mrs. Cooper bought 3 large popcorns and 3 large drinks and paid $30. How much does each item cost?
Answer:
Both items cost $5 each
Step-by-step explanation:
Given data
let popcorn be x
and drink be y
Mr. Montoya paid $20 for 3 large popcorns and 1 large drink
so
3x+y= 20-------------1
and
Mrs. Cooper bought 3 large popcorns and 3 large drinks and paid $30
so
3x+3y= 30----------------2
solve 1 and 2 above
3x+y= 20
y= 20-3x
put y= 20-3x in eqn 2
3x+3(20-3x)= 30
3x+60-9x= 30
collect like terms
3x-9x= 30-60
-6x= -30
x= 30/6
x= $5
put x= 5 in y= 20-3x
y= 20-3*5
y= 20-15
y= $5
State whether the relation is a function. If yes is the function one-to-one?
Answer:
No
Step-by-step explanation:
A function requires that one point in the domain corresponds with exactly one value in the codomain. In other words, one x-value should only correspond to one y-value. Seeing the graph, each x-value has two y-values (one on the top half of the circle, another on the bottom), and thus is not a function.
A simple intuitive way to see if a relation is a function is to use the vertical line test: If a vertical line intersects the relation more than once, it's not a function.
Kelly has $20000 to invest, and hopes to earn $1390 in interest in the first year. She wants her investment in treasury bills to be $3000 more than her investment in corporate bonds. The expected return (in simple interest) on each investment are: Treasury Bills: 5%, Treasury Bonds: 7%, Corporate Bonds: 10%. How much should Kelly invest in each one?
Answer:
$8,000 in Treasury bills
$7,000 in Treasury bonds
$5,000 in corporate bonds
Step-by-step explanation:
Let the amount to be invested in treasury bills be $x , the amount to be invested in treasury bonds be $y
From the question, we understand that the amount she will invest in corporate bonds will be $3000 less than the amount in treasury bills;
So mathematically, this will be $(x - 3000)
So therefore, the amount invested in each will be;
x + y + x-3000 = 20,000
2x + y = 20,000 + 3000
2x + y = 23,000 ••••••••(i)
Let’s now work with the simple interests;
For treasury bills;
5% = 5/100 * x = 5x/100
For Corporate bonds ;
10% = 10/100 * (x -3000) = (x-3000)/10
For Treasury bonds 7%
7% = 7/100 * y = 7y/100
Adding all gives the total interest;
5x/100 + 7y/100 + (x-3000)/10 = 1390
Multiply through by 100
5x + 7y + 10(x-3000) = 1390 * 100
5x + 7y + 10(x-3000) = 139,000
5x + 7y + 10x -30,000 = 139,000
15x + 7y = 139,000 + 30,000
15x + 7y = 169,000 •••••••••(ii)
So we have two equations to solve simultaneously;
From i, y = 23,000 - 2x
Put this into ii
15x + 7(23,000 -2x) = 169,000
15x + 161,000 - 14x = 169,000
x + 161,000 = 169,000
x = 169,000 - 161,000
x = $8,000
y = 23,000 - 2x
y = 23,000 - 2(8,000)
= 23,000 - 16,000 = $7,000
So the last investment amount is x-3000 = 8,000 -3,000 = $5,000
an ir signal has a percent transmittance of 45%. what does this mean with respect to how the sample interacted with the ir light source? group of answer choices
If an IR signal has a percent transmittance of 45%, then the sample absorbed 55% of the IR light
The percent transmittance of an IR signal = 45%
The equation of percent transmittance is
Percent transmittance = ( I / Io ) × 100
Where Io is the intensity of the IR signal entering the sample
I is the intensity of the IR signal leaving the sample
If the Io = I, then the percent transmittance is 100% that means the sample did not absorb any light and if Io= 0 then the the percent transmittance is 0% then sample absorbed all the light
Here, the percent transmittance is 45%, that mean the 55% of light absorbed by the sample
Therefore, the sample absorbed 55% of the IR light
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Type the correct answer in the box.
The table below represents the total cost of leasing a car at the end each month.
Month
1
3
Cost
$1,859
$2,577
$4,372
$5,808
8
12
Write an equation in slope-intercept form to represent the total cost. y. of leasing a car for x months.
Answer:
y = 359x + 1500
((PIC INCLUDED))
Step-by-step explanation:
to write an equation or function in slope intercept form (y=mx+b), first fill out the known values, in this case we got points on a plot
(1,1859)
(3,2577)
(8,4372)
and (12,5808)
to find the slope between these, lets first find the closest two points (makes it easier, but can be done with any two points along a linier graph) for this it will be the first two
now subtract the y-value of the first point from the second point
2577 - 1859 = 718
then devide that by the difference in the x-values between the two points
3 - 1 = 2
718 / 2 = 359
we can now implement the slope (m) into the equation
y = 359x + b
now that we know the slope we can find out what the y intercept (b) is, the slope indicates that as we add 1 in x value, the y value increases by 359, since this works in reverse as well, we can go to our first point, subtract 1 x value (so x = 0) and subtract m from the y value times the x value (359)
1859 - 359 = 1500
meaning that y = 1500 at x = 0, so the y intercept (b) is 1500, insert that value as follows
y = 359x + 1500
all points fall along the line plotted by this function, meaning this is the correct answer
please help me
thanks
Step-by-step explanation:
what is your question
wha