Which of the following functions matches this graph?
Answer:
a. y=x^2
Step-by-step explanation:
desmos graphing calculator
Please help
the value -2 is lower bound for the zeros of the function below
f(x)=4x^3-12x^2-x+15
True or False
Answer:
False
Step-by-step explanation:
f(x)=4x^3-12x^2-x+15
Using synthetic division
-2 4 -12 -1 15
-8 40 -78
--------------------------
4 -20 39 -63
Since this is not zero, this is not a lower bound
Answer:
\(\Large \boxed{\mathrm{False}}\)
Step-by-step explanation:
\(\sf f(x)=4x^3-12x^2-x+15\)
The zeros of the function is the values at which the function crosses the x-axis.
The value -2 is not a lower bound for the zeros of the function.
2(11) -
What’s the answer
Answer:
22
Step-by-step explanation:
2x11=22
he diameter of a circle is 8 centimeters. What is the circle's circumference?
Use 3.14 for .
Answer:
25.12 cm
Step-by-step explanation:
The circumference of a circle is
C = pi * d
C = 3.14 * 8
C =25.12 cm
Answer:
The circle's circumference is 25.13 centimeters.
Step-by-step explanation:
C=2pi*r where r=radius
Since the diameter of a circle is 8 centimeters,
we know that the radius is 4 centimeters.
C=2pi*4=8pi=25.13
A survey found that the relationship between the years of education a person has and that person's yearly income in his or her first job after completing schooling can be modeled by the equation y = 1200 x + 7000, where x is the number of years of education and y is the yearly income. According to the model, how much does 1 year of education add to a person's yearly income?
According to the model, each additional year of education adds $1200 to a person's yearly income in their first job after completing schooling.
We're given the equation y = 1200x + 7000, where x represents the number of years of education, and y represents the yearly income.
To find how much 1 year of education adds to a person's yearly income, we need to look at the coefficient of the variable x, which is 1200.
So according to the model, 1 year of education adds $1,200 to a person's yearly income.
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1. A cone is 8cm high and has a base diameter of 12cm.its slant height is a.6cm b.8cm c.10cm d.12cm
Answer:
10
Step-by-step explanation:
it is Pythagoras theorem
6*6=36
8*8=64
64+36=100
square root of 100 is 10
qs 14-18 determining components of costs of goods manufactured
Cost of Goods Manufactured is an accounting term used to describe the total cost of producing and manufacturing goods. It includes all direct and indirect costs of production, including labor, materials, overhead, and other expenses. Below are the five components of the cost of goods manufactured.
Direct Materials: It includes the cost of raw materials used in manufacturing a product.
Direct Labor: It includes the wages paid to workers who directly worked on the production line or in manufacturing a product.
Factory Overhead: It includes all indirect costs of manufacturing a product such as depreciation on equipment, rent, insurance, utilities, etc. Work-in-Process
Inventory: It includes the cost of materials, labor, and overhead that has been incurred but has not yet been completed. Finished Goods Inventory: It includes the cost of goods that have been fully manufactured but have not yet been sold.
To calculate the cost of goods manufactured, the sum of all these five components is calculated. It helps manufacturers to determine the total cost of goods manufactured and the cost per unit of production. Cost of goods manufactured is essential in determining the pricing strategy for a product as it helps to ensure that the product is profitable.
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how is the triangle proportionality theorem used to solve for the length of the missing side of a triangle
Triangle proportionality theorem is used for finding the length of the missing side of the triangle .
For example , let's take a question to solve.
We have to find the value of x, in the given dig.
If DEbar || BCbar , then AD/DB = AE/EC
The lines QR¯¯¯¯¯ and ST¯¯¯¯¯ are parallel.
Therefore, by the Triangle Proportionality Theorem,
PS/QS=PT/RT
Substitute the values and solve for x .
6/2=9/x
Cross multiply.
6x=18
Divide both sides by 6 .
6x/6=18/6x=3
The value of x is 3 .
Therefore , the missing side of the triangle is 3
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someone help 6th grade math i will give brainliest
Answer:
decimal 0.13
percent is 13
Step-by-step explanation:
Answer:
Decimal: 13
Percent: 13%
Step-by-step explanation:
Sorry if it wrong
A solid with surface area 50units^2 is dilated by a scale factor of K to obtain a solid surface area 200units^2. Find the value of K.
The value of K is 2.
Let's denote the scale factor as K. The surface area of a solid after dilation is directly proportional to the square of the scale factor.
We are given that the initial surface area of the solid is 50 units^2, and after dilation, the surface area becomes 200 units^2.
Using the formula for the surface area, we have:
Initial surface area * (scale factor)^2 = Final surface area
50 * K^2 = 200
Dividing both sides of the equation by 50:
K^2 = 200/50
K^2 = 4
Taking the square root of both sides:
K = √4
K = 2
Therefore, the value of K is 2.
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Which of the following best describes ethics?
it is a set of thoughts that are made about kinds of individuals
or their manners of conducting activities
it is a set of values that define r
Answer:
the second
Step-by-step explanation:
refers to well-founded standards of right and wrong that prescribe what humans should do, usually in terms of rights, obligations, benefits to society, justice
. would you guess that the distribution is skewed, or roughly symmetric? a. skewed b. there's not enough evidence to decide. c. roughly symmetric
The appropriate answer is B: There's not enough evidence to decide whether the distribution is skewed or roughly symmetric.
a. The quartiles divide the data into four equal parts. Q1 (the first quartile) is the median of the lower half of the data, Q3 (the third quartile) is the median of the upper half of the data. In this case, Q1 is 71 pounds, which means that 25% of the high school female athletes had a maximum bench press less than or equal to 71 pounds. Q3 is 91 pounds, indicating that 75% of the athletes had a maximum bench press less than or equal to 91 pounds.
b. Based on the given information, we can make an educated guess about the distribution's symmetry. The median (81 pounds) is equal to the mean, which suggests a roughly symmetric distribution. Additionally, the values of Q1 (71 pounds) and Q3 (91 pounds) are symmetrically distributed around the median. However, without additional information or a graphical representation of the data, we cannot definitively determine the distribution's skewness.
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a If you have 2/3 of your first 18-egg carton full, how many more eggs will fit in that
carton? What fraction card will you need to draw to fill the first carton exactly?
Answer:
6 eggs
Step-b6y-step explanation:
18 - (18× 2/3) = 6
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PLEASE HELP WILL GIVE BRAINLIEST
Arrange the tiles on both boards to find the value of x.
Board sum: 3x + (-5) = 1
What x value solves the equation?
3x - 5 = 1
X =
Answer: x = 2
Step-by-step explanation:
3x - 5 = 1
add 5 to both sides
3x - 5 (+5) = 1 (+5)
3x = 6
divide by 3 on both sides
3x/3 = 6/3
x = 2
Consider the following linear system: 2x + 2y + 12z = 8 3x - 2y + z = -10 ¸x + y + (k² − 3)z = k + 1 (a) Write down the augmented matrix of the system. (b) Find all the possible values of k for which the system has no solution, infinitely many solutions, or a unique solution.
The possible values of k for the given system are:
(a) k ≠ 5 → The system has no solution.
(b) k = 5 → The system has infinitely many solutions.
(c) k can take any value except 5 → The system has a unique solution.
(a) To write down the augmented matrix of the given linear system, we can arrange the coefficients of the variables and the constant terms in a matrix form. The augmented matrix has the form [A|B], where A represents the coefficient matrix and B represents the constant matrix.
The given system of equations is:
2x + 2y + 12z = 8
3x - 2y + z = -10
x + y + (k² - 3)z = k + 1
The corresponding augmented matrix [A|B] is:
[ 2 2 12 | 8 ]
[ 3 -2 1 | -10 ]
[ 1 1 (k²-3)| k+1 ]
(b) To find the possible values of k for which the system has no solution, infinitely many solutions, or a unique solution, we can use Gaussian elimination or row reduction.
Performing Gaussian elimination, we'll reduce the augmented matrix to row-echelon form or row-reduced echelon form.
[ 2 2 12 | 8 ]
[ 3 -2 1 | -10 ]
[ 1 1 (k²-3)| k+1 ]
R2 = R2 - (3/2)R1
R3 = R3 - (1/2)R1
[ 2 2 12 | 8 ]
[ 0 -5 -17 | -26 ]
[ 0 -1 (k²-15)/2 | (k-5)/2 ]
R3 = R3 - (1/5)R2
[ 2 2 12 | 8 ]
[ 0 -5 -17 | -26 ]
[ 0 0 (k²-15)/2 - (k-5)/10 | (5-k)/10 ]
Now, we have the row-echelon form of the augmented matrix.
For the system to have a unique solution, the row-echelon form must not have any row of the form [0 0 0 | b] where b ≠ 0. So, we need to analyze the last row of the row-echelon form.
The last row can be written as:
0 * x + 0 * y + 0 * z = (5 - k) / 10
Now, let's consider the three cases:
Case 1: The system has no solution.
If (5 - k) / 10 ≠ 0, i.e., (5 - k) ≠ 0, the system has no solution. This implies k ≠ 5.
Case 2: The system has infinitely many solutions.
If (5 - k) / 10 = 0, i.e., (5 - k) = 0, the system has infinitely many solutions. This implies k = 5.
Case 3: The system has a unique solution.
If (5 - k) / 10 can take any non-zero value, the system has a unique solution. This implies k can be any value except 5.
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Moe plays a simplified version of powerball: You either win the entire jackpot of $500,000,000 or you lose the cost to play (i.e., $2). The probability of winning powerball is 1 out of 292,201,338 (the probability of losing is thus ). What is the expected value of playing this version of powerball?
The expected value of playing this version of powerball is -1.995.
The expected value of a random variable is the sum of the product of its possible values and their respective probabilities. In this case, we have two possible values: -$2 (the cost to play) and $500,000,000 (the jackpot). The probability of winning is 1 out of 292,201,338, so the probability of losing is (292,201,338 - 1)/292,201,338 = 292,201,337/292,201,338 ≈ 0.999999996.
The expected value can be calculated as follows: Expected value = (probability of winning x value of winning) + (probability of losing x value of losing)Expected value = (1/292,201,338) x $500,000,000 + (292,201,337/292,201,338) x (-$2)Expected value = $1.71 - $1.995Expected value ≈ -$0.285Since the expected value is negative, it means that, on average, players will lose money playing this version of powerball. Therefore, it is not a good idea to play this game.
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i would greatly appreciate it if you answered and stopped scrolling.
a coin is biased such that a tail is eight times as likely to occur as a . find the expected number of when this coin is tossed .
The expected number of tails when a biased coin is tossed is 8/9.
The expected number of tails when a biased coin is tossed can be found using the formula E(X) = np, where n is the number of trials and p is the probability of a tail occurring.
In this case, the probability of a tail occurring is eight times as likely as a head, so p = 8/9.
If the coin is tossed once, then n = 1.
Therefore, the expected number of tails when this coin is tossed once is:
E(X) = np
E(X) = (1)(8/9)
E(X) = 8/9
So the expected number of tails when this biased coin is tossed once is 8/9.
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You’ve decided to open a checking account. You know there are a number of differences with individual banking institutions. Name at least 3 good questions to ask to get started, and explain why knowing this information is helpful. Use complete sentences.
Answer:
1. Can I use the Atm for free?
2. What happens if I withdraw more money than I have in my account?
3. Does my account pay me intrest?
Step-by-step explanation:
1.ATMs allow you to withdraw money from your checking account without visiting a bank branch. But some withdrawals could cost you. Many banks charge you to use machines operated by other banks or third parties, and those fees can add up quickly.
2. Withdrawing more than your account contains is called an overdraft. Bank overdraft services generally allow your transaction to go through, but you will be charged a fee. Some banks prevent you from overdrafting when swiping your debit card and may let you request that all transactions are declined when your account doesn’t contain enough funds.
3. Generally, if checking accounts pay interest, the rate is very low. High-yield checking accounts offer higher interest but typically require higher balances. Savings accounts offer higher rates, but because the accounts are intended for saving, they’re subject to different rules
tristan tried his luck with the lottery. he can win $60 if he can correctly choose the 2 numbers drawn. if order matters and there are 10 numbers in the drawing, how many different ways could the winning numbers be drawn?
The total number of ways the winning number can be drawn using the combination is 45.
Combinations are mathematical operations that count the number of potential configurations for a set of elements when the order of the selection is irrelevant. You can choose the components of combos in any order.
We have,
The Total numbers, n = 10
The Numbers to select, r = 2
The following combination formula is used to determine the potential winning numbers.
Total = ⁿCᵣ
Where,
n = 10 and r = 2
Substitute the values in the above equation,
Total = ¹⁰C₂
Using the combination formula,
ⁿCᵣ = n!/(n - r)!r!
So, we have
Total = 10! / 8! 2!
Total = 10 × 9 / 2
Total = 45
Hence, the number of ways is 45.
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what is the exact amount of water our body contains?
Answer:
Up to 60% of the human adult body is water.
Step-by-step explanation:
Answer:
73% water, and the lungs are about 83% water. The skin contains 64% water, muscles and kidneys are 79%, and even the bones are watery: 31%.
Step-by-step explanation:
2) Find the surface area of the cube. You should have at least 2 steps shown
Answer: 294 square millimeters
Step-by-step explanation:
Each side of the cube is 7 mm.
First, find the area of one face. The formula for the area of a square is \(s^2\). 7 mm squared is 49 square millimeters.
A cube has 6 faces, so multiply the area of one face by 6. 49*6 = 294 square millimeters
A student-athlete wants to sell hot dogs for a game. She has to pay a vendor fee of $3000 for the season & equipment will cost her $4500 for the season. Each hot dog sold will cost her $0.35. She anticipates selling 2000 hot dogs at the game.
To break even, what price should she charge for each hot dog?
To determine the price the student-athlete should charge for each hot dog to break even, we need to consider the total costs she incurs, including the vendor fee, equipment cost, and the cost per hot dog. By dividing the total costs by the anticipated number of hot dogs sold, we can find the price per hot dog that would allow her to break even.
The total costs for the student-athlete include the vendor fee of $3000 and the equipment cost of $4500, which sums up to $7500 for the season. Additionally, she incurs a cost of $0.35 per hot dog sold. With an anticipation of selling 2000 hot dogs, the total cost for the hot dogs would be 2000 x $0.35 = $700.
To break even, the total revenue from selling the hot dogs should cover the total costs. Therefore, the price per hot dog should be set in such a way that the revenue from selling 2000 hot dogs equals $7500. Dividing the total costs ($7500) by the number of hot dogs (2000), we find that the student-athlete should charge $3.75 per hot dog in order to break even. This price per hot dog would allow her to cover all her expenses and reach the break-even point.
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a manufacturing machine has a 5% defect rate. if 7 items are chosen at random, what is the probability that at least one will have a defect?
The probability of selecting at least one defective item at random is 0.3017.
The probability of an event occurring at least once will be calculated as the complement of the probability of the event never occurring. You can use exponents to multiply the number of events that occurred when calculating this amount.
Defect rate = P(defect) = 0.05
Probability is defined as the required outcome divided by the total number of possible outcomes.
P( at least 1 is defective) = 1 - P(none is defective)
P(not defective) = 1 - P(defective) = 1 - 0.05 = 0.95
P(none is defective) = P(non defective)^7
P(none defective) = 0.95× 0.95 × 0.95 × 0.95 × 0.95× 0.95× 0.95=0.6983
P(at least one is defective) = 1 - 0.6983 = 0.3017
Therefore, probability of at least one defective item is 0.3017.
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a = √7 + √c and b = √63 + √d where c and d are positive integers.
Given that c: d = 1: 9
find, in its simplest form, the ratio a: b
Answer:
\(\displaystyle a:b=\frac{1}{3}\)
Step-by-step explanation:
Ratios
We are given the following relations:
\(a=\sqrt{7}+\sqrt{c}\qquad \qquad[1]\)
\(b=\sqrt{63}+\sqrt{d}\qquad \qquad[2]\)
\(\displaystyle \frac{c}{d}=\frac{1}{9} \qquad \qquad [3]\)
From [3]:
\(9c=d\)
Replacing into [2]:
\(b=\sqrt{63}+\sqrt{9c}\)
We can express 63=9*7:
\(b=\sqrt{9*7}+\sqrt{9c}\)
Taking the square root of 9:
\(b=3\sqrt{7}+3\sqrt{c}\)
Factoring:
\(b=3(\sqrt{7}+\sqrt{c})\)
Find the ration a:b:
\(\displaystyle a:b=\frac{\sqrt{7}+\sqrt{c}}{3(\sqrt{7}+\sqrt{c})}\)
Simplifying:
\(\boxed{a:b=\frac{1}{3}}\)
list the first five terms of the sequence. an = (−1)n − 1 4n
The first 5-terms of sequence "aₙ = (-1)ⁿ⁻¹/4ⁿ" are : a₁ = 1/4, a₂ = -1/16, a₃ = 1/64, a₄ = -1/256, a₅ = 1/1024.
A sequence is a ordered collection of elements, typically numbers, that are arranged in a specific order. Each element in a sequence is associated with a positive integer index, denoted as n, which represents its position in the sequence.
To find the first 5-terms of the sequence given by the formula aₙ = (-1)ⁿ⁻¹/4ⁿ, we substitute the values of n from 1 to 5:
For n = 1:
a₁ = (-1)¹⁻¹/4¹ = 1/4,
For n = 2:
a₂ = (-1)²⁻¹/4² = -1/16,
For n = 3:
a₃ = (-1)³⁻¹/4³ = 1/64,
For n = 4:
a₄ = (-1)⁴⁻¹/4⁴ = -1/256,
For n = 5:
a₅ = (-1)⁵⁻¹/4⁵ = 1/1024,
Therefore, the first five terms are: 1/4, -1/16, 1/64, -1/256, 1/1024.
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The given question is incomplete, the complete question is
List the first five terms of the sequence. aₙ = (-1)ⁿ⁻¹/4ⁿ.
Which company offers the best deals? Explain the answer.
Answer:
The best deal
Step-by-step explanation:
First of all what company is that?
And what type deal..?
At what points will the line y = x intersect the unit circle x2 y2 = 1? smaller value and larger value
\(The two equations given arey = x …. (1)x2 + y2 = 1 …. (2)Substitute equation (1) in (2)x2 + x2 = 12x2 = 1x2 = ½x = √1/2x = ±0.707As the square can be positive or negative we get x1 = 0.707 and x2 = -0.707From equation (1) we know that y = xy1= x1= 0.707y2= x2 = -0.707Therefore, the line y = x intersects the unit circle x2 + y2 = 1 at (0.707, 0.707) and (-0.707, -0.707).\)
What is intersect?A junction is a place where two lines come together or cross. In the illustration above, "point K is the intersection of line segments PQ and AB" is what we would state. The phrase "the line segment PQ crosses AB at position K" is another option.
Keep in mind that two line segments do not always need to intersect. In the illustration above, move point B higher until the intersection of the two line segments disappears. However, keep in mind that lines (as opposed to line segments) continue indefinitely in both directions, thus unless they are absolutely parallel, they will always cross someplace.
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PLEASE HELPPPPP which is the correct one?
The work below shows a common mistake. Click the part of the problem where the error occurs.
Hypotenuse² = Perpendicular² + Base²
10² = 1²+x²
x²= 100 -1
x=√99
x≈9.94
4x-6y=-20
-2x+4y=6
8th grade pre algebra
The values of x and y that are solutions to the simultaneous equations are; x = -11 and y = -4
How to Solve Simultaneous Equations?
We are given the simultaneous equations;
4x - 6y = -20 -----(eq 1)
-2x + 4y = 6 -----(eq 2)
Multiply equation 2 by 2 and eq 1 by 1 to get;
-4x + 8y = 12 -----(eq 3)
Add eq 3 to eq 1 to get;
2y = -8
y = -4
Thus;
4x - 6(-4) = -20
4x + 24 = - 20
4x = -20 - 24
4x = -44
x = -44/4
x = -11
Thus, the values of x and y that are solutions to the simultaneous equations are; x = -11 and y = -4
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