Considering the data given in the table, the quadratic curve of best-fit is given by:
D. y = 2.3x² - 2.4x + 3.5.
How to find the equation of quadratic regression using a calculator?To find the equation, we need to insert the points (x,y) in the calculator.
In this problem, we have that:
The values of x are: 0.8, 1.3, 2.2, 2.9, 3.7, 5.1.The values of y are: 2.7, 6.1, 9.4, 9.4, 33, 49.9.Using a calculator, the equation is given by:
y = 2.3x² - 2.4x + 3.5.
Hence option D is correct.
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The table shows the number of each type of snack bag that was sold this month at lunch. Snack Bag Number Sold
Cheese Curls 250
Popcorn 125
Potato Chips 340
Pretzels 85
The school makes $0. 75 profit on each bag sold and expects to sell 1,200 bags next month. Based on last month’s results, how much profit can the school expect to make on potato chips next month?
$__
Based on the results from last month, the school can expect to make a profit of $900 on potato chips sales next month.
Calculate the number of potato chips sold last month: According to the table, the number of potato chips sold last month was 340.
Calculate the profit from potato chips sold last month: To determine the profit from potato chips sales last month, we multiply the number of potato chips sold by the profit per bag. Using the formula:
Profit = Number of Bags Sold * Profit per Bag, we have:
Profit from potato chips sold last month = 340 * $0.75 = $255.
Determine the expected number of potato chips to be sold next month: The problem states that the school expects to sell 1,200 bags next month.
Calculate the expected profit from potato chips next month: Using the same formula as before, we multiply the expected number of potato chips to be sold next month by the profit per bag:
Expected profit from potato chips next month = Expected number of bags sold * Profit per bag
=> 1,200 * $0.75 = $900.
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Jay has an album that holds 800 coins. Each page of the album holds 8 coins. If 40% of the album is empty, how many pages are filled with coins?
The number of pages that are filled with coins is 60
What is the percentage?A percentage is a minimum number or ratio that is measured by a fraction of 100.
We are given that Jay has an album that holds 800 coins. Each page of the album holds 8 coins. If 40% of the album is empty.
If there are 6 coins on each page, then the number of pages for 600 coins will be:
(800coins)/(8 coins/page) = 100 pages
If 40% are empty, then 100% - 40% = 60% are filled.
The number of filled pages is:
60% × 100 = 60/100 × 100 = 60 pages filled
Hence, the number of pages that are filled with coins is 60
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ANSWER ASAP PLEASE. TAKE YOUR TIME TO DETERMINE IT. IT CAN HAVE MORE THAN 1 ANSWER.
1.) -7
A. Rational
B. Irrational
C. Natural
D. Whole
E. Integer
2.) -√81
A. Rational
B. Irrational
C. Natural
D. Whole
E. Integer
3.) 8.444....
A. Rational
B. Irrational
C. Natural
D. Whole
E. Integer
4.) 9/10
A. Rational
B. Irrational
C. Natural
D. Whole
E. Integer
5.) √42
A. Rational
B. Irrational
C. Natural
D. Whole
E. Integer
Answer:
1.) -7
A. Rational
B. Irrational
C. Natural
D. Whole
E. Integer
2.) -√81
A. Rational
B. Irrational
C. Natural
D. Whole
E. Integer
3.) 8.444....
A. Rational
B. Irrational
C. Natural
D. Whole
E. Integer
4.) 9/10
A. Rational
B. Irrational
C. Natural
D. Whole
E. Integer
5.) √42
A. Rational
B. Irrational
C. Natural
D. Whole
E. Integer
Name a segment parallel to bc
how to find the surface area
Answer:
364m^2
Step-by-step explanation:
Surface area is calculated by adding the area of each face.
Because this is a cubiod, there are 6 sides in pairs of identical area.
4m × 5m = 20m^2
4m × 18m = 72m^2
5m × 18m = 90m^2
90m^2 +72m^2 +20m^2 = 182m^2
This is 3 faces of the 6, so double it.
182m^2 ×2 = 364m^2
Please help this is for Using Trigonometric Ratios!!!!!!!!!!!!!!!
Answer:
its 26
Step-by-step explanation:
i did that already
please help because I don’t know!!
Answer:
Step-by-step explanation:
Comment
There was a flat fee of 10 dollars
Each 1/4 hour brought in 3,75
The total charge was 55 dollars.
Equation
Charge = 10 + 4*3.75*x as an hourly rate,
Solution
55 = 10 + 4*3.75x Combine
55 = 10 + 15x Subtract 10 from both sides
55-10= 10-10 + 15x
45 = 15x Divide by 15
45/15 = 15x/15
x = 3 hours
Answer 3 hours
A b = 8x - 7 BC = 6X + 7 what is AC
Answer:
a
Step-by-step explanation: codigo binario
WILL GIVE BRAINLIEST!
Use the roster method to write the set.
The positive integers less than 7
Step-by-step explanation:
your answer in roster method is
(1,2,3,4,5 and 6)
there are 3 times as many white tiles as there are shaded. How many tiles are white if there are 12 tiles in total?
The number of tiles that are white if there are 12 tiles in total will be 9.
How to compute the equation?An equation simply has to do with the statement that illustrates the variables given. In this case, it is vital to note that two or more components are considered in order to be able to describe the scenario. It is important to note that an equation is the mathematical statement.
In this case, there are 3 times as many white tiles as there are shaded.
The number of tiles that are white if there are 12 tiles in total will be:
3x + x = 12
4x = 12
Divide
x = 3
Shaded tiles = 3
White tiles = 3x
= 3 × 3
= 9
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James is participating in a 5-mile walk to raise money for a charity. He has received $800 in fixed pledges and raises $13 extra for every mile he walks. Use a point-slope equation to find the amount he will raise if he completes the walk.
Answer:
The amount that James will raise for the charity is $865.
Step-by-step explanation:
Total distance to cover = 5 miles.
He had received $800 in fixed pledges, and raises $13 for every mile he walks. Let the mile he walks be represented by d, and the amount he would raise by A.
So that,
A = $(13d + 800)
But, d = 5 miles.
thus,
A = $(13 x 5 + 800)
= $865
Thus,
amount he would raise = $865
James would be able to raise $865 for the charity after the walk.
given the figure below, calculate the area
Answer:
1+√3
Step-by-step explanation:
Area of the triangle = 1/2 * base * height
Area of the triangle = 1/2 * AC * BD
We need to get AC
AC = AD+DC
Get base AD using SOH CAH TOA
tan 45 = 4/AD
AD = 4/tan45
AD = 4/1
AD = 4
Get DC
tan 30 = 4/DC
DC = 4/tan 30
DC = 4/(1/√3)
DC = 4√3
AC = 4 + 4√3
AC = 4(1+√3)
Get the Area of the triangle
Area = 1/2 * 4 * 4(1+√3)
Area of the triangle = 1+√3
Given that m∠ABC ≠ 0, which of the following could potentially describe the supplement of ∠ABC? Select all that apply. Assume no negative angle measures.
acute
right
obtuse
reflex
straight
Plsssssssssssss help
Answer:
C
Step-by-step explanation:
The graph is showing a slope of 3/2. The only option showing this slop is c.
HELP ASAP 100 POINTS AND BRAINLIEST IF CORRECT IF WRONG I WILL REPORT!!
Which data set has a variation, or mean absolute deviation (MAD), similar to the data set in the given plot?
Answer:c
Step-by-step explanation::Add all the absolute deviations and divide by number of swimmers. Step-by-step explanation:
Refer to the figure: The Triangle
Midsegment Theorem says the midpoints
(K and L) of two sides of a triangle will
result in parallel third sides such that KL is
half of MN.
A. Sketch ∆JKL and ∆JMN separately in the space below. Label all vertices.
Then explain, in detail, how you could
justify that the two triangles are similar, using the results of the Midsegment
Theorem.
What is the scale factor between the two triangles and how do you know?
Answer:
The Triangle Midsegment Theorem states that, if we connect the midpoints of any two sides of a triangle with a line segment, then that line segment satisfies the following two properties
Step-by-step explanation:
WORD PROBLEM SYSTEMS. I THINK 1 OR 4 BIT MAINLY 4.
The manager of a store orders bookcases that cost $16 and sells them for $20. What is the
mark-up percentage?
Answer:
25 percent
Step-by-step explanation:
Answer:
56
Step-by-step explanation:
ndld
Find the sine ratio for ∠D.
a. 7/25
b. 24/7
c. 25/24
d. 24/25
Answer:
sin ∠D = 24/25
Step-by-step explanation:
sin = opposite / hypotenuse
Looking at ∠D, the opposite side is 24, hypotenuse is 25
Therefore sin = 24/25
there appears to be in the data at 26. if we remove the outlier, the shape of the distribution is . the miles per gallon vary from . a reasonable estimate for the mean of the data is .
In the given statement, "there appears to be in the data at 26", the author is referring to the presence of an outlier in the dataset.
When an outlier is present in a data set, it can significantly affect the mean or average value. The mean is the sum of all the data points divided by the total number of data points.
The shape of the distribution can be affected by the presence of an outlier as well. A typical distribution would have a symmetrical shape, with the majority of the data clustered around the center. However, if an outlier is present, it can skew the distribution and make it appear lopsided.
If we remove the outlier, we can assume that it would be more symmetrical than it was before. As for the miles per gallon, we don't have enough information to determine the range or distribution. Therefore, we cannot estimate the mean without further data.
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A/a; B/b; C/C; D/d x A/A; B/b; c/c; D/d What is the probability of obtaining A/a; B/b; C/c; D/d offspring? 1/4 1/8 1/16 3/16 1/32
Since each trait is inherited independently, we can multiply the probabilities together. The probability of obtaining A/a; B/b; C/c; D/d offspring is (1/2) * (1/2) * (1/2) * (1/2) = 1/16.
The probability of obtaining A/a; B/b; C/c; D/d offspring can be calculated by multiplying the probabilities of each individual trait. Since each trait is inherited independently, we can multiply the probabilities together.
The probability of obtaining A/a offspring is 1/2 (A is dominant and a is recessive).
The probability of obtaining B/b offspring is 1/2 (B is dominant and b is recessive).
The probability of obtaining C/c offspring is 1/2 (C is dominant and c is recessive).
The probability of obtaining D/d offspring is 1/2 (D is dominant and d is recessive).
Therefore, the probability of obtaining A/a; B/b; C/c; D/d offspring is (1/2) * (1/2) * (1/2) * (1/2) = 1/16.
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why the evidence in the form of the p-value should not be considered conclusive that ms. gilbert was guilty of the excess death? (think about cobb’s arguments)
Cobb's arguments about p-value is about the uncertainty of data that p-value represents. It doesn't signify truth and must be comprehended in the setting of other variables.
A p-value of 0.05 specifies that the possibility of observing the result by chance is 5%, but the other aspect of that is that it also shows that there is a 95% probability of obtaining a result that is not due to chance.
Cobb argues that other variables such as multiple testing, confounding variables, or sampling variability can affect the p-value's precision. The p-value is considered invalid in the presence of any
or sampling variability, as it may mislead the results. A p-value is also vulnerable to multiple testing, which is when numerous evaluations are done on the same data. When performing multiple testing, a more conservative p-value is required to regulate for the risk of an accidental Type I error.
Cobb's argument emphasizes that while the p-value is essential for hypothesis testing, it should not be the sole determinant of data's validity. Researchers must consider other sources of variability when interpreting p-values to determine if they support or refute a hypothesis.
Hence, p-value alone should not be considered conclusive, and one must consider other sources of data to make decisions.
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The human outer ear contains a more-or-less cylindrical cavity called the auditory canal that behaves like a resonant tube to aid in the hearing process. One end terminates at the eardrum (tympanic membrane), while the other opens to the outside. Typically, this canal is approximately 2.4 cm long.A. At what frequencies would it resonate in its first two harmonics?B. What are the corresponding sound wavelengths in part A?
The auditory canal would resonate at approximately 7154.17 Hz and 14304.35 Hz for the first two harmonics. The corresponding sound wavelengths would be approximately 0.048 m and 0.024 m for the fundamental frequency and second harmonic, respectively.
To determine the resonant frequencies of the auditory canal in its first two harmonics, we can use the formula for the resonant frequencies of a closed-end cylindrical tube:
f = (n * c) / (2L)
Where:
f = resonant frequency
n = harmonic number (1 for the fundamental frequency, 2 for the second harmonic, and so on)
c = speed of sound in air (approximately 343 m/s at room temperature)
L = length of the auditory canal (2.4 cm = 0.024 m)
A. Resonant frequencies in the first two harmonics:
For the fundamental frequency (n = 1):
f₁ = (1 * 343) / (2 * 0.024) ≈ 7154.17 Hz
For the second harmonic (n = 2):
f₂ = (2 * 343) / (2 * 0.024) ≈ 14304.35 Hz
B. Corresponding sound wavelengths in part A:
The wavelength of a sound wave can be determined using the formula:
λ = c / f
For the fundamental frequency (n = 1):
λ₁ = 343 / 7154.17 ≈ 0.048 m (or 4.8 cm)
For the second harmonic (n = 2):
λ₂ = 343 / 14304.35 ≈ 0.024 m (or 2.4 cm)
Therefore, the auditory canal would resonate at approximately 7154.17 Hz and 14304.35 Hz for the first two harmonics. The corresponding sound wavelengths would be approximately 0.048 m and 0.024 m for the fundamental frequency and second harmonic, respectively.
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sin x =
cos x =
tan x =
Answer:
Step-by-step explanation:
Use SOH CAH TOA to recall how the trig functions fit on a triangle
SOH: Sin(Ф)= Opp / Hyp
CAH: Cos(Ф)= Adj / Hyp
TOA: Tan(Ф) = Opp / Adj
so Sin(x) = d/f
Cos(x) = e/f
Tan(x) = d/e
got it? :)
Answer: sin= d/f
cos= e/f
tan= d/e
Step-by-step explanation:
find the value of discriminant of the equation X square + 10 x - 7 =02
Answer:
136
Step-by-step explanation:
as you know that discriminant of a quadratic equation is
D= b² - 4ac
here, according to the give equation
x² + 10x -7 -2= 0
x²+ 10x -9 = 0
b= 10 , c= -9 and a= 1
by putting all these values in D.
you can get the value of discriminant which is 136.
I got this explained answer from an app called GAUTHMATH. Which is completely dedicated to maths problem. You can check it out too. It's available on Play Store and App Store.
hope this helps.
solve the equation. -4(7x + 8) = 192
A. Is there a GCF?
B. Is the polynomial a special case? If so, name the special polynomial.
4x^2 + 4x + 1
Therefore, after answering the given query, we can state that The given polynomial 4x2 + 4x + 1 cannot be classified as a special case polynomial because it is not a special polynomial.
What is Highest Common Factor?The biggest common divisor of multiple non-zero integers is defined in mathematics as the highest significant integer the fact that divides the associated integers. The sum of two or more integers is the greatest common variable (HCF) of those numbers. It is commonly referred to as a most common divisor as a result. (GCF). To find the largest common divisor, take the prime values of each of the two (or a number of) integers and identify the shared prime factors. The largest common divisor after that is the sum of all the prime factors. The greatest common factor of a given number is determined by dividing it by the largest integer.
A. The polynomial 4x2 + 4x + 1 must be factored into its prime components in order to determine its GCF (Greatest Common Factor). However, using integers or rational numbers, this equation cannot be factored any further. Consequently, this polynomial's GCF is 1.
B. The given polynomial 4x2 + 4x + 1 cannot be classified as a special case polynomial because it is not a special polynomial.
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Angle C is inscribed in circle O.
AB is a diameter of circle O.
What is the measure of angle A?
b= 37
Angle A is a central angle and is equal to twice the measure of the corresponding inscribed angle. In this case, angle C is the corresponding inscribed angle.
Since angle C is inscribed in circle O and AB is a diameter, angle C is a right angle (90 degrees). Therefore, angle A is equal to 2 times 90 degrees, which is 180 degrees.
Angle A is a central angle, which means it is formed by two radii of the circle that intercept an arc. In this case, AB is a diameter of circle O, which means it passes through the center of the circle. Since angle C is inscribed in circle O, it is formed by two radii that intercept an arc. In other words, angle C is the angle formed by AB and another radius of the circle. Since AB is a diameter, it forms a right angle with any other radius.
Therefore, angle C is a right angle, which measures 90 degrees.
Now, we know that angle A is equal to twice the measure of the corresponding inscribed angle, which is angle C.
Therefore, angle A is equal to 2 times 90 degrees, which simplifies to 180 degrees. So, the measure of angle A is 180 degrees.
Angle A, when AB is a diameter of circle O and angle C is an inscribed angle, measures 180 degrees. This is because angle A is a central angle and is equal to twice the measure of the corresponding inscribed angle.
In this case, angle C is the corresponding inscribed angle, which is a right angle measuring 90 degrees. Therefore, angle A measures 180 degrees.
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Answer:
If your question looks like this, then the answer is 53
cindy baught 1/4 amount of ribbon and jacob baught 7/8 amount of ribbon how much ribbon does jacob have
Answer:
0.875
Step-by-step explanation:
A polynomial has one root that equals 5 - 7i. Name one other root of this
polynomial.
The other root of the polynomial is 5 + 7i.
What is a Polynomial?Polynomial, a mathematical expression made comprised of numbers and variables arranged in specific patterns. Polynomials are sums of monomials of the form ax^n, where n (the degree) must be a whole number and a (the coefficient) can be any real number. The greatest degree monomial in a polynomial determines the polynomial's degree. Polynomials can be prime or factorable into products of primes, just like whole numbers. As long as each variable's power is a non negative integer, they can include any number of variables. They serve as the foundation for solving algebraic equations.
As per the given data:
One root of a polynomial is 5 - 7i
For finding the other root:
Consider the quadratic formula:
\(x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}\)
From here, we can observe that imaginary roots will always occur in a pair.
So if one root is a + ib the other will be a - ib.
Similarly, for 5 - 7i the other root will be 5 + 7i.
Hence, the other root of the polynomial is 5 + 7i.
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