Mickey used these calculations to find how much he would spend on 7 cartons of eggs, if 12 cartons of eggs cost $22.20. Describe his error.
12 cartons(+22.20)
--------------------------
$22.22(+22.20)
Unit price = $0.54 50.54(7) = $3.78
Answers
Answer:Mickey set up the equivalent rate wrong. The cartons of eggs should be in the denominator, because you need to find the unit price for 1 carton of eggs
Step-by-step explanation:
Answer:
Sample student response: Mickey set up the equivalent rate wrong. The cartons of eggs should be in the denominator, because you need to find the unit price for 1 carton of eggs.
Step-by-step explanation:
Related Questions
Anyone it is almost due help
Answers
Answer: I not super sure, but I think you are supposed to put the equations on each side of the table. Your end result should be 2x to the second -5x-3.
Step-by-step explanation:
What is the expanded form for 12^3
Answers
Answer:
B
Step-by-step explanation:
12 times 12 times 12
awscalculate mse for each region. is the variability·around the fitted regression line approxi- mately the same for the four regions? discuss.
Answers
In order to calculate the Mean Squared Error (MSE) for each region, you will need to have a dataset with values for each region.
Once you have this dataset, you can calculate the MSE using the following formula:
MSE = 1/n x ∑(yi - ŷi)²
where n is the number of data points in the region, yi is the actual value for the ith data point, and ŷi is the predicted value for the ith data point. Once you have calculated the MSE for each region, you can compare the values to determine if the variability around the fitted regression line is approximately the same for each region.
If the MSE values are similar for each region, then the variability around the fitted regression line is approximately the same. If the MSE values are different for each region, then the variability around the fitted regression line is not the same for each region.
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A salesman sellls a car for $10,500. If he paid a commission of 5% for the first $10,000 and 8% on the remainder, what’s the total commission
Answers
Using percentages we can conclude that the total commission the salesman gets is of $540.
What is the percentage?A number or ratio that can be expressed as a fraction of 100 is referred to as a percentage in mathematics. If we need to calculate a percentage of a number, we should divide it by its entirety and then multiply it by 100. The percentage, therefore, refers to a part per hundred. Per 100 is what the word percent means. By dividing the value by the total value and multiplying the result by 100, one can determine the percentage. The percentage calculation formula is (value/total value)100%.So, the total commission:
5% of 10,000 -
10,000/100 × 5 = $5008% of remaining (10,500 - 10,000 = 500) $500 -
500/100 × 8 = $40Total commission: $500 + $40 = $540
Therefore, using percentages we can conclude that the total commission the salesman gets is of $540.
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Fatima is taking a test that is 45 minutes long.
She finishes the test at 10:50 a.m.
What time did she start the test?
Answers
Answer:10:05
Step-by-step explanation:
subtract 45 from 50!
Answer:
She started the test at 10:05 am
Step-by-step explanation:
Take the end time and subtract the time of the test
10:50-45 = 10:05
She started the test at 10:05 am
In the star below, all of the inscribed angles are congruent. Find the measure of each inscribed angle.
Answers
Answer:
36 degrees for each angle.
Step-by-step explanation:
If you divide 180 by 5 (for each point in the star) you get 36 degrees.
We want to prove that, for any two stable matchings μ,μ
′
, If μ(m)⪰
m
μ
′
(m) for every m∈M, then μ
′
(w)⪰
w
μ(w) for every w∈W. Fill out three small steps (a)-(c) below. Proof: Suppose, toward contradiction, that ∃w such that μ(w)≻
w
μ
′
(w). (a) Explain that w is matched to a man (instead of remaining single) in μ. (b) Denote μ(w) by m. Explain that μ
′
(m)
=w. (c) Explain that (m,w) is a blocking pair of μ
′
. The last observation contradicts that μ
′
is stable, which completes the proof. Remark: M-optimal stable matching is the best stable matching for every man. Thu the above result implies that M-optimal is the worst stable matching for every woman
Answers
If μ(m) ⪰ m μ'(m) for every man m, then μ'(w) ⪰ w μ(w) for every woman w. This implies that the M-optimal stable matching is the worst stable matching for every woman.
(a) If μ(w) ≻ w μ'(w) holds, it means that woman w prefers her partner in μ(w) over remaining single in μ'. Therefore, w is matched to a man (instead of remaining single) in μ.(b) Let's denote μ(w) as m. Since w is matched to m in μ, it follows that μ'(m) ≠ w. If μ'(m) = w, it would contradict the assumption that μ(m) ⪰m μ'(m) for every man m.
(c) Since μ'(m) ≠ w and w prefers μ(w) over remaining single, (m, w) forms a blocking pair for μ'. This means that there exists a woman-woman pair that prefers each other over their current partners in μ'. This contradicts the stability of μ', as stable matchings do not have blocking pairs.
The contradiction in (c) demonstrates that the assumption of μ(m) ⪰m μ'(m) for every man implies that μ'(w) ⪰w μ(w) for every woman. Therefore, the result shows that the worst stable matching for every woman is the M-optimal stable matching.
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Write each sum as a product of two factors.
Problem: 2y • 3 + 4 • 3
Please hurry!!
Answers
Answer:
12y i think
Step-by-step explanation:
...
Solve for y:
76y = 19
Y =2/3
Y = 1/4
Answers
Answer:
y = 1/4
Step-by-step explanation:
76y = 19.
Get rid of the 76 by dividing 76 from both sides.
76y/76 = 19/76
19/76 simplified is 1/4.
\(\huge\text{Hey there!}\)
\(\mathsf{76y = 19}\)
\(\textbf{DIVIDE 76 to BOTH SIDES}\)
\(\mathsf{\dfrac{76y}{76} = \dfrac{19}{76}}\)
\(\textbf{SIMPLIFY it}\)
\(\mathsf{y = \dfrac{19}{76}}\)
\(\mathsf{y = \dfrac{19\div19}{76\div19}}\)
\(\mathsf{y = \dfrac{1}{4}}\)
\(\huge\text{Therefore, your answer should be: }\)
\(\huge\boxed{\mathsf{y = \dfrac{1}{4}}}\huge\checkmark\)
\(\huge\text{Good luck on your assignment \& enjoy your day!}\)
~\(\frak{Amphitrite1040:)}\)Wilt is a fine basketball player, but his free-throw shooting could use some work. For the past three seasons, he has made only 56% of his free throws. His coach sends him to a summer clinic to work on his shot, and when he returns, his coach has him step to the free-throw line and take 50 shots. He makes 34 shots. Is this result convincing evidence that wilt’s free-throw shooting has improved? we want to perform a simulation to estimate the probability that a 56% free-throw shooter would make 34 or more in a sample of 50 shots
Answers
To perform this simulation, we can use a computer program to generate a random number between 0 and 1 for each shot.
If the random number is less than or equal to 0.56, then the shot is counted as a make. We can then repeat this process 50 times and count the number of shots that were made.
We can repeat this process many times, and count the proportion of times that 34 or more makes are achieved. This proportion is the estimated probability that a 56% free-throw shooter would make 34 or more in a sample of 50 shots.
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help w hs geometry pls
Answers
Answer:
63°
Step-by-step explanation:
\(m\angle BKD =\frac{1}{2}(m\widehat {AE} +m\widehat {BD} )\)\(\implies m\angle BKD =\frac{1}{2}(86\degree +40\degree)\)\(\implies m\angle BKD =\frac{1}{2}(126\degree)\)\(\implies m\angle BKD =63\degree\)Please help! I will give brainliest.
Answers
The measure of ∠x is 32 degrees.
What is the Angle Sum Property?The angle sum property of a triangle states that the sum of the angles of a triangle is equal to 180º. A triangle has three sides and three angles, one at each vertex. Whether a triangle is an acute, obtuse, or a right triangle, the sum of its interior angles is always 180º.
Given:
\(\overline{\text{DE}}\) || \(\overline{\text{FG}}\) and \(\overline{\text{KL}}\) is perpendicular to \(\overline{\text{FG}}\).
To find:
The measure of ∠x.
Solution:
If two lies intersect each other, then vertical opposite angles are equal.
\(\text{m}\angle\text{BAC}=\sf58^\circ\) (Vertically opposite angles)
\(\text{m}\angle\text{CAB}=\sf \text{x}^\circ\) (Vertically opposite angles)
KL is perpendicular to FG.
\(\text{m}\angle\text{ABC}=\sf90^\circ\)
According to the angle sum property, the sum of all interior angles of a triangle is 180 degrees.
In triangle ABC,
\(\text{m}\angle\text{ABC}+\text{m}\angle\text{CAB}+\text{m}\angle\text{BAC}=180^\circ\)
\(\sf90^\circ+x^\circ+58^\circ=180^\circ\)
\(\sf x^\circ+148^\circ=180^\circ\)
\(\sf x^\circ=180^\circ-148^\circ\)
\(\sf x^\circ=32^\circ\)
Hence, the measure of ∠x is 32 degrees.
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Which values, when substituted for x in the expression _/x , will result in an irrational number? Select all that apply.
Answers
The values, which when substituted for x in the expression √x , would result in an irrational number are:
x = 168x = 2x = 8x = 21x = πThe types of numbers.In Mathematics, there are six (6) common types of numbers and these include the following:
Natural (counting) numbersWhole numbersRational numbersIrrational numbersReal numbersIntegersWhat is an irrational number?An irrational number can be defined a type of number which comprises non-terminating or non-repeating decimals such as the square root of 168, 2, 8, 21, π, 11.
In conclusion, when a perfect square or 4 is substituted for x in the expression √x, the result is not an irrational number because it is neither a terminating nor a repeating decimal.
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Complete Question:
Which values, when substituted for x in the expression √x, will result in an irrational number? Select all that apply.
x = 168
x = 2
x = 8
x = 21
x = π
x = 4
when x is a perfect square.
The z-score for a particular observation is z = -1.2. This means the observation is
Answers
The observation is located to the left of the mean by a distance of 1.2 standard deviations.
How to observe the mean of situation?The z-score of an observation represents the number of standard deviations the observation is away from the mean.
If the z-score for a particular observation is z = -1.2, this means that the observation is 1.2 standard deviations below the mean.
If the mean is represented by μ and the standard deviation by σ, then we can express this observation as:
observation = μ + (z * σ)
observation = μ + (-1.2 * σ)
This means that the observation is located to the left of the mean by a distance of 1.2 standard deviations.
For example, The z-score represents the number of standard deviations an observation is above or below the mean of the distribution.
In this case, a z-score of -1.2 indicates that the observation is 1.2 standard deviations below the mean height of the group.
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What is the least positive multiple of $21$ that is greater than $380$?
Answers
Answer:
7980
Step-by-step explanation:
Prime factorization of the numbers:
21 = 3 × 7
380 = 2 × 2 × 5 × 19
LCM(21, 380)
= 2 × 2 × 3 × 5 × 7 × 19
= 7980
If you can, please give me a Brainliest; thank you!
The tetrahedron enclosed by the coordinate planes and the plane 2x + y + z =4
Answers
volume= 16/3, A coordinate plane is a graphing and description system for points and lines. A vertical (y) axis and a horizontal (x) axis make up the coordinate plane. There are four quadrants in the coordinate plane. The point where these lines connect is called the origin (0, 0).
limits
z= 0 to z = 4-y-2x
y= 0 to y = 4- 2x
x= 0 to x= 2
volume
v= \(\int\limits^2_0 \int\limits^4_0 \int\limits^4_0 dzdydx\)
v= \(\int\limits^2_0 \int\limits^4_0 (4-y-2x) dydx\)
v= \(\int\limits^2_0 ( 4y- y^{2} / 2 - 2xy) ^4^-^2^x _0\)
dx= \(\int\limits^2_0 [ 16-8x - 16+ 4x^2 - 16x / 2 - 8x+ 4x^2 ] dx\)
v= \(\int\limits^2_0 [ 8+ 2x^2- 8x] dx\\\)
= [ 8x + 2x^3 / 3 - 8x^2 / 2 ] ^2_0
= [16+ 16/3- 16]
v= 16/3
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Complete Question
Question: Sketch The Tetrahedron Enclosed By The Coordinate Planes And The Plane 2x+Y+Z=4. Use A Triple Integral To Find The Volume Of The tetrahedron
For a moving object, the force acting on the object varies directly with the object's acceleration. When a force of 20 N acts on a certain object, the acceleration
of the object is 4 ms. If the force is changed to 15 N, what will be the acceleration of the object?
Answers
Answer:
bahihirapan na ako sa module
Step-by-step explanation:
na yan
Find the x and y intercepts of the graph of the linear equation -x + 8y = 4
Answers
Answer: x-int: (-4, 0), y-int: (0, 1/2)
Step-by-step explanation:
x-int: when y = 0
-x + 8*0 = 4
-x = 4
x = -4
(-4, 0)
y-int: when x = 0
0 + 8y = 4
8y = 4
y = 1/2
(0, 1/2)
solve the system by substitution 6x-2y=26 and -y+3=x
Answers
Hope this helped! :)
43. timers at a swim meet used four different clocks to time an event. which recorded time is the most precise? a. 55 s c. 55.25 s b. 55.2 s d. 55.254 s
Answers
The recorded time that is most precise among the four different clocks used to time an event is 55.254 seconds. This is because the recording of this time has the highest decimal precision compared to the other three options.
Precision refers to the degree of accuracy of a measurement, calculation, or specification. It's related to the number of digits used to record or express a quantity, and it's a reflection of uncertainty associated with a measurement or calculation. The greater the precision, the more significant digits are recorded. For example, the result of a calculation could be stated as 1.23 or 1.234, or 1.2345 depending on the degree of precision necessary or desired.
To determine which one is the most precise, you can look at the number of decimal places or digits after the decimal point. The option with the most number of decimal places is 55.254 s, which has three decimal places, while the other options have either one or two decimal places. The general rule for determining precision is to look at the smallest division on the scale of the measuring instrument. In this case, it is not given what type of clocks were used, so we cannot determine the smallest division of each clock. However, since 55.254 s has the most decimal places, it is the most precise recording among the four options.
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If the lighthouse were 8 miles from the shore and the boat were to stay 3 times as far from the shore as from the lighthouse, what would be the equation of the conic section describing the boat's path?
Answers
The boat's path is a vertical line which passes through the origin (0,0).
Let the x-axis represent the shore line, with the origin (0,0) at the shore. Let the x-coordinate increase in the direction of the lighthouse. Thus, the lighthouse is located 8 units along the positive x-axis at (8,0).
Then, the boat must be located 3 times as far from the shore as from the lighthouse. This means that the boat's x-coordinate, denoted as b, must satisfy the equation:
b = 8 + 3(b-8)
This simplifies to 4b = 24, so b = 6. Thus, the boat is located at (6,0).
With this information, we can construct the conic section describing the boat's path. The equation of a general conic section is given by
Ax² + Bxy + Cy² + Dx + Ey + F = 0
We know two points that lie on the conic section: the lighthouse at (8,0) and the boat at (6,0). Substituting these into the equation of the conic section yields the following system of equations:
8A + 0B + 0C + 8D + 0E + F = 0
6A + 0B + 0C + 6D + 0E + F = 0
Solving the system yields A = 0, B = 0, C = 0, D = -1, E = 0 and F = 0.
Therefore, the equation of the conic section describing the boat's path is given by:
0x² + 0xy + 0y² - 1x + 0y + 0 = 0
Simplifying, this equation reduces to -x = 0, or x = 0. This implies that the boat's path is a vertical line which passes through the origin (0,0).
Therefore, the boat's path is a vertical line which passes through the origin (0,0).
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HELP ME!!!! ITS URGENT
Guilherme wanted to buy a new computer. The apple store was having a 65% off black Friday sale. The 40 inch apple desktop was $1400. There was an additional door prize coupon that took $50 off more after the sale. What was Guilherme's final price for his apple desktop?
Answers
Answer:
hey do you want to join my zoom?
Step-by-step explanation:
The cheasebirger is three times the price of the fries and the drink and the fries were the same price. if the entire meal was $12.50 what was the price for each item?
Answers
Let's break down the information given to solve the problem. We'll denote the price of the fries as "f," the price of the drink as "d," and the price of the cheeseburger as "c."
From the given information, we can deduce two equations:
c = 3(f + d) (The cheeseburger is three times the combined price of the fries and the drink.)
f + d = x (The price of the fries and drink combined is denoted as "x".)
We also know that the entire meal costs $12.50, so we can form a third equation:
3. c + f + d = 12.50
Now, let's substitute the value of x from equation 2 into equation 1:
c = 3x
Substituting the value of c from equation 1 into equation 3, we have:
3x + x = 12.50
4x = 12.50
x = 3.125
So, the price of the fries and drink combined (x) is $3.125. Since the price of the fries and the drink are the same, each item costs $3.125/2 = $1.5625.
Therefore, the price for the cheeseburger (c) is 3 times the combined price of the fries and drink, which is 3 * $3.125 = $9.375.
In summary, the price for each item is as follows:
Fries and drink: $1.5625 each
Cheeseburger: $9.375
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Peter is painting his bedroom. His bedroom has four walls. Yesterday, he painted 1 2/5 walls. What fraction of the walls is left to paint?
Answers
Answer: 2 3/5ths are left or 13/5
Step-by-step explanation: 1 2/5 + 2 3/5 = 4 total walls
Find the value of $x$ .
Two chords of a circle intersect each other. In first chord, the length of longer segment is 18 units and shorter segment is 10 units. In second chord, the length of shorter segment is 9 units and longer segment is labeled x minus 3.
$x\ =\ $
Answers
The value of x for the given chords is 23.
What is a chord?A circle's chord is the line segment that connects any two locations on the circle's circumference. It should be remembered that a circle's diameter is defined as the lengthiest chord that runs across the centre of the circle. In the illustration below, a circle and its chord are shown. At the circle's centre, chords with identical lengths subtend equal angles.
We know that, the product of the lengths of the segments of one chord, when two chords cross inside a circle, equals the product of the lengths of the segments of the other chord.
Thus,
(18)(10) = (9)(x - 3)
180 = 9x - 27
9x = 207
x = 23
Hence, the value of x for the given chords is 23.
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writr an equation for a line that is perpendicular to the line 3x + 6y = 24 that goes through the point (1,-5)
Answers
What is the equation for line that is perpendicular to the line 3x + 6y = 24 and goes through the point (1,-5) is y = 2x - 7.
What is the equation for line that is perpendicular to the line 3x + 6y = 24 and goes through the point (1,-5) ?The formula for equation of line is expressed as;
y = mx + b
Where m is slope and b is y-intercept.
Given the equation of the original line: 3x + 6y = 24
Rewritten in slope-intercept form as:
6y = -3x + 24
y = (-1/2)x + 4
The slope of the given line is -1/2.
To find the equation of a line that is perpendicular to this line, we need to find a line with a slope that is the negative reciprocal of -1/2, which is 2.
Let the equation of the perpendicular line be:
y = 2x + b
where b is the y-intercept.
To find the value of b, we can use the fact that the line passes through the point (1,-5).
Substituting these values into the equation of the line, we get:
-5 = 2(1) + b
-5 = 2 + b
b = -7
Hence, the equation of the line that is perpendicular to 3x + 6y = 24 and passes through the point (1,-5) is y = 2x - 7.
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Which function would you use to locate the index of the first character of the first occurence of a substring within another string?
Answers
You would use the CHARINDEX string function to locate the index of the first character of the first occurrence of a substring within another string.
What is the CHARINDEX function?The CHARINDEX() function is defined as returning the substring's location within the given string. Like the SUBSTRING function, it operates in reverse.
⇒ Syntax of CHARINDEX() function is CHARINDEX (substring, input_string)
Substring: Here, we specify the substring within the input string that we wish to look for. A maximum of 8000 characters may be used in this argument.
Input_string: The input string is defined in this argument.
Therefore, You would use the CHARINDEX string function to locate the index of the first character of the first occurrence of a substring within another string.
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An annuity has a payment of $300 at time t = 1, $350 at t = 2, and so on, with payments increasing $50 every year, until the last payment of $1,000. With an interest rate of 8%, calculate the present value of this annuity.
Answers
The present value of the annuity is $4,813.52.
To calculate the present value of the annuity, we can use the formula for the present value of an increasing annuity:
PV = C * (1 - (1 + r)^(-n)) / (r - g)
Where:
PV = Present Value
C = Payment amount at time t=1
r = Interest rate
n = Number of payments
g = Growth rate of payments
In this case:
C = $300
r = 8% or 0.08
n = Number of payments = Last payment amount - First payment amount / Growth rate + 1 = ($1000 - $300) / $50 + 1 = 14
g = Growth rate of payments = $50
Plugging in these values into the formula, we get:
PV = $300 * (1 - (1 + 0.08)^(-14)) / (0.08 - 0.05) = $4,813.52
Therefore, the present value of this annuity is $4,813.52. This means that if we were to invest $4,813.52 today at an interest rate of 8%, it would grow to match the future cash flows of the annuity.
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2 3/4 divided by 0.76
Answers
Answer:
3.61842105263
Step-by-step explanation:
Answer: The answer would be 3.61
Step-by-step explanation:
Based on the data shown below X 2 3 4 5 6 7 8 19 10 data 45.22 44.74 40.96 37.68 33.7 30.62 30.94 24.26 21.88 21.4 11 Find the correlation coefficient. What proportion of the variation in y can be explained by the variation in the values of x? Report answer as a percentage accurate to one decimal place.
Answers
There is a strong negative linear relationship between x and y, and almost all of the variation in y can be explained by the variation in x.
The correlation coefficient is -0.961 and the proportion of the variation in y that can be explained by the variation in the values of x is 92.3%.
The correlation coefficient measures the strength and direction of the linear relationship between two variables. In this case, the correlation coefficient between x and y is -0.961, which indicates a strong negative linear relationship between the two variables.
The coefficient of determination (r²) measures the proportion of the variation in y that can be explained by the variation in the values of x. In this case, the value of r² is 0.923, or 92.3%. This means that 92.3% of the variability in y can be explained by the variability in x. Therefore, there is a strong negative linear relationship between x and y, and almost all of the variation in y can be explained by the variation in x.
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