Select the point that is a solution to the system of inequalities.
y< x² +3
y>x²-4
Any point that includes the origin that comes in the shaded region will satisfy the system of equation.
For the points that satisfy the system of inequalities y < x² + 3 and y > x² - 4, we need to graph the two parabolas y = x² + 3 and y = x² - 4 and shade the region where the two graphs overlap.
The graph of y = x² + 3 is an upward-facing parabola that intersects the y-axis at (0, 3). The graph of y = x² - 4 is also an upward-facing parabola that intersects the y-axis at (0, -4).
We can see from the graphs that the region where y < x² + 3 and y > x² - 4 is the shaded region between the two parabolas. This region is bounded by the two lines y = x² + 3 and y = x² - 4.
To find a point that satisfies this system of inequalities, we can pick any point within this shaded region. For example, the point (0, 0) lies within the shaded region and satisfies both inequalities:
[tex]y = 0 < x^2+ 3 = 3\\y = 0 > x^2 - 4 = -4[/tex]
Therefore, the point (0, 0) is a solution to the system of inequalities.
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Given this equation what is the value of y at the indicated point?
Answer:
y = [tex]\sqrt{11}[/tex]
Step-by-step explanation:
Substitute -4 for x and solve for y
[tex]y^{2}[/tex] = -2x + 3
[tex]y^{2}[/tex] = -2(-4) + 3
[tex]y^{2}[/tex] = 8 + 3
[tex]y^{2}[/tex] = 11
[tex]\sqrt{y^{2} }[/tex] = [tex]\sqrt{11}[/tex]
y = [tex]\sqrt{11}[/tex]
Helping in the name of Jesus.
For a standard normal distribution, find (as a decimal NOT a percent):
P(Z > 1.5)
The approximate z-score that corresponds to a right tail area of 1.50 is 0.066807
Calculating the probability of values from the the z-scoresFrom the question, we have the following parameters that can be used in our computation:
P(Z > 1.5)
This means that we calculate the z-score right tail area of 1.50
This is represented as
Probability = (z > 1.50)
Using a graphing calculator, we have
Probability = 0.066807
Hence, the probability value is 0.066807
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Consider the function defined by f(x) for x > 0 and its graph y = f(x).
The graph of f has a horizontal tangent at point P. Find the coordinates of P.
This means that the coordinates of P are (a, b), where a is the value for which f'(a) = 0, and b = f(a).
What is coordinate?The term "coordinate" generally refers to a value or set of values that describe the position or location of a point or object in a particular system or space. In mathematics, coordinates are typically used to describe the position of a point on a graph or in a geometric plane, and they usually consist of a set of numerical values that indicate the distance or direction of the point from a specified origin or reference point. In geographic or cartographic contexts, coordinates might refer to latitude and longitude values that indicate a specific location on the Earth's surface. Other systems may use different types of coordinates, but the underlying idea is usually the same: a set of values that describe the position of an object or point in a given space or system.
if the graph of f has a horizontal tangent at point P, this means that the slope of the tangent line at P is zero.
Let (a, b) be the coordinates of P. Then the equation of the tangent line at P is:
[tex]y - b = f'(a)(x - a)[/tex]
Since the slope of the tangent line at P is zero, we have:
f'(a) = 0
This means that the derivative of f at x = a is zero. So, we need to find the value of a for which f'(a) = 0.
Once we find the value of a, we can substitute it into the equation of the tangent line to find the value of b.
So, let's find f'(x) first:
f(x) = ... (the function is not given, so we cannot find f'(x) explicitly)
We know that f'(a) = 0, so we have:
[tex]f'(a) = lim h- > 0 [f(a+h) - f(a)]/h = 0[/tex]
This means that:
[tex]lim h- > 0 [f(a+h) - f(a)]/h = 0[/tex]
Multiplying both sides by h, we get:
[tex]lim h- > 0 [f(a+h) - f(a)] = 0[/tex]
Taking the limit as h approaches 0, we get:
[tex]f(a) - f(a) = 0[/tex]
So, we have:
[tex]f(a) = b[/tex]
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Simplify the product using the distributive property
(3h - 5)(5h + 4)
Step-by-step explanation:
(3h - 5)(5h + 4) = 3h * 5h + 3h * 4 - 5*5h - 5 *4
= 15h^2 - 13h -20
[tex](3h-5)(5h+4)[/tex]
[tex]=(3h+-5)(5h+4)[/tex]
[tex]=(3h)(5h)+(3h)(4)+(-5)(5h)+(-5)(4)[/tex]
[tex]=15h^2+12h-25h-20[/tex]
Answer:
[tex]\bold{=15h^2-13h-20}[/tex]What is the perimeter of the polygon?
Two number are in ratio 9:13 and their sum is 176 . Find the number
Answer:
9x + 13x = 176
22x = 176
x = 8
So the numbers are 9 × 8 = 72 and
13 × 8 = 104.
what is the equation that best models the data from the table after the data has been linearized? a. log y = 0.116315x+0.249114
b. log y = 0.249114x+0.116315
c. log y = 0.0288761x+0.435269
d. log y = 0.435269x+0.0288761
Okay, let's analyze the linearized data options to determine which equation best models it:
a. log y = 0.116315x+0.249114
This has a positive slope coefficient of 0.116315, so it will model increasing data. But the y-intercept term 0.249114 is negative, so the model line would start below the origin. This does not seem to match the typical linear relationship we would expect.
b. log y = 0.249114x+0.116315
This also has a positive slope coefficient, but now the y-intercept term 0.116315 is positive. This could potentially model increasing data that starts above the origin. However, without seeing the data it's hard to definitively say if this is the best fit.
c. log y = 0.0288761x+0.435269
This has a positive but much smaller slope coefficient of 0.0288761. This would model increasing data at a much shallower rate. Again, without seeing the data we can't rule this out, but it seems less likely.
d. log y = 0.435269x+0.0288761
This has a larger positive slope coefficient of 0.435269, so it would model increasing data at a steeper rate. And the positive y-intercept term of 0.0288761 ensures the model line starts above the origin.
Of these 4 options, choice d (log y = 0.435269x+0.0288761) seems the most likely to best model increasing linear data that starts above the origin. However, without seeing the actual data points, we can't say that with certainty. The slope and intercept values would need to give the closest fit to the data for that to be the definitive choice.
Let me know if this helps explain the options, or if you have any other questions!
The scores on a test are normally distributed with a mean of 90 and a standard deviation of 18. Find the score that is one-half a standard deviation
below the mean.
A score of__is one-half a standard deviation below the mean.
Need help in part two and part 3 step by step on each Sweet Dreams
Part 1
Directions: Molly collected data from her friends. Each friend told her the number
of hours they slept last night. Use the information in the chart below to complete a
line plot of the data. Determine the scale you should use, and a title for the line
plot. Using the blank line plot below, write in the intervals, the title you chose, and
place a dot on the line plot for each of Molly’s friend’s hours of sleep. Then, answer
the questions about the line plot you’ve created.
The most common amount of sleep is 8 1/2 hours.
There is no outlier in the data.
The difference in hours between the longest night's sleep and the longest night's sleep is 3.5 hours.
The number of people who slept longer than 8 hours is 15 people.
What is a dot plot?In Mathematics and Statistics, a dot plot can be defined as a type of line plot that is typically used for the graphical representation of a data set above a number line, especially through the use of crosses or dots.
Based on the information provided about the number of hours Molly's friends slept last night, we can reasonably infer and logically deduce that all of the data points would be between 6 and 11, without any outlier.
In this scenario, we would use an online graphing calculator to construct a dot plot with respect to a number line that accurately fit Molly's data set, with a scale of 0 < x < 11.
Difference in hours = 10 - 6.5 = 3.5 hours.
In conclusion, the dot plot would be titled "Hours of sleep."
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Missing information:
The question is incomplete and the complete question is shown in the attached picture.
Please help me solve questions 4, 5, & 6!
The probabilities are given as follows:
4. A. 1/2.
5. B. 3/7.
6. C. 3/13.
How to calculate a probability?A probability is calculated as the division of the desired number of outcomes by the total number of outcomes in the context of a problem/experiment.
For item 4, we have that out of 30 trials, an Alaskan Malamute won 15 times, hence the probability is given as follows:
p = 15/30
p = 1/2.
For item 5, we have that out of 42 trials, a Siberian Husky was chosen 18 times, hence the probability is given as follows:
p = 18/42
p = 3/7.
For item 6, we have that out of 52 cards in a deck, 12 are pictures, hence the probability is given as follows:
p = 12/52
p = 3/13.
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I need to fill in the blanks
For an isosceles triangle, a leg is congruent to the other leg. A leg is not necessarily congruent to the base. The correct solution found by solving the equation 2x = 3x - 5 is x = 5. The length of the top left side is 10, and the length of the bottom left side is 10.
What is an isosceles triangle?In Mathematics and Geometry, an isosceles triangle simply refers to a type of triangle with two (2) sides that are equal in length and two (2) equal angles.
This ultimately implies that, an isosceles triangle comprises two (2) side lengths that are equal and two (2) angles with the same magnitude.
In this isosceles triangle, we have the following equation;
2x = 3x - 5 (two (2) side lengths are congruent).
3x - 2x = 5
x = 5 units.
For the bottom left side, we have;
3x - 5 = 3(5) - 5 = 15 - 5 = 10 units.
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Solve the following equations graphically. (x +1)(y − 2) = 0
Answer:
(-1, 2)
Step-by-step explanation:
When an equation is formatted like this, you can just reverse the operators (in this case +1 and -2) and you'll get your coordinates.
Given: ABCD is a trapezoid, AD = 10, BC = 8, CK - altitude ,Area of ∆ACD = 30.Find: Area of ABCD
BTW:the answer is somehow not 54
The area of ACD based on the information given will be 54 units².
How to calculate the areaThe area of a trapezoid is calculated as follows:
(base1 + base2) height / 2 = Area
where base1 and base2 are the lengths of the trapezoid's two parallel sides, and height is the perpendicular distance between them.
So, assuming you have the measurements for base1, base2, and height, you can use the formula above to compute the area of the trapezoid.
Area = 1/2 × (10 + 8) × 6
Area = 1/2 × 18 × 6
Area = 54 units ²
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At the park there is a pool shaped like a circle with diameter 22 yd. A ring-shaped path goes around the pool. Its
width is 5 yd. If one gallon of coating can cover 5yd many gallons of coating do we need? Note that coating comes only by the gallon so the number of gallons must be a whole number. (Use the value 3.14 for pi.)
Answer: To find the area of the ring-shaped path, we need to subtract the area of the inner circle (the pool) from the area of the outer circle. The radius of the pool is half the diameter, so it is 11 yards. The radius of the outer circle is the sum of the radius of the pool and the width of the path, so it is 11 + 5 = 16 yards.
The area of the pool is:
A_pool = pi * r^2 = pi * 11^2 ≈ 380.13 square yards
The area of the outer circle is:
A_outer = pi * R^2 = pi * 16^2 ≈ 804.25 square yards
The area of the ring-shaped path is:
A_path = A_outer - A_pool ≈ 804.25 - 380.13 ≈ 424.12 square yards
Since one gallon of coating can cover 5 square yards, we need:
Gallons = A_path / 5 ≈ 424.12 / 5 ≈ 84.82
Therefore, we need approximately 85 gallons of coating to cover the ring-shaped path.
Step-by-step explanation:
What is the factored form of 8x24-27y6?
o (8x-27y2) (2x¹+xy+3y*)
ọ (2x³− 3y²)(4x¹6−6x³y² +9y4)
0 (2x³-3y²) (4x¹6 +6x³y² +9yª)
(8x-27y²) (2x¹6-Bxy+3y4)
The factored form of [tex]8x^{2} 4 - 27y^{6}[/tex] 8x²4 - 27y⁶
To factor this expression, that it is in the form of a difference of two squares.
Specifically, 8x²4 is equal to (2x²)³ and 27y⁶ is equal to (3y²)³.
the formula for the difference between two cubes, states that:
[tex]a^3 - b^3 = (a - b)(a^2 + ab + b^2)[/tex] (a³ - b³ = (a - b)(a² + ab + b²)
Substituting [tex]a = 2x^2[/tex] a = 2x² and [tex]b = 3y^2[/tex] b = 3y², gives
[tex]8x^24 - 27y^6 = (2x^2)^3 - (3y^2)^3= (2x^2 - 3y^2)(4x^2 + 6x^2y^2 + 9y^4)[/tex]
8x²4 - 27y⁶ = (2x²)³ - (3y²)³ = (2x² - 3y²)(4x⁴ + 6x²y² + 9y⁴)
Therefore, the factored form of [tex]8x^{2} 4 - 27y^{6}[/tex] 8x²4 - 27y⁶ is [tex](2x^2 - 3y^2)(4x^4 + 6x^2y^2 + 9y^4).[/tex](2x² - 3y²)(4x⁴ + 6x²y² + 9y⁴).
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Plot the numbers -1 1/6 and 7/3 on the number line below.
Solve each equation for y. Form the unlock code by putting a dash between each solution (e.g., 1-2-3). Hint: y<10 for all. y²- 1 = 80 (y - 4)÷ 4 = 1 10-63÷y = 1
The solution to the equations for y are y = 9, y = 8 and y = 7
Solving the equations for y.From the question, we have the following parameters that can be used in our computation:
y²- 1 = 80
(y - 4)÷ 4 = 1
10 - 63 ÷ y = 1
Solving the equations, we have
y²- 1 = 80
y² = 81
y = 9
Next, we have
(y - 4)÷ 4 = 1
(y - 4) = 4
y = 8
Lastly, we have
10 - 63 ÷ y = 1
-63 ÷ y = -9
-9y = -63
y = 7
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The diagram shows a calculator screen on which the parabolas y=1/4(x-3)(x-8) and y=1/2(x+1)(x-3) have been graphed. The window setting consists of two inequalities, A is less than or equal to X is less than or equal to B and C is less than or equal to Y is less than or equal to D. What are the values of a, b, c, and d?
Answer:
If I am not mistaken a=3;b=10;c=23;d=39
Step-by-step explanation:
Write a compund interest function to model the following then find the balance after the given number of years situation$17 400 invested at a rate of 2.5 compounded annually 8 years
Therefore, after 8 years, the interest will be $20,146.60.
What is interest?When a customer pays interest to borrow money from a bank, for example, interest is referred to as a payment from the borrower in the finance industry.
The customer would pay an amount that is greater than the amount they borrowed due to interest.
The principal is the sum of money that was first invested or lent and upon which interest is based.
We refer to the process of calculating fresh interest based on the new principal (which is the old principal plus interest) at the conclusion of the subsequent payment period as compound interest when we add interest to interest.
So, compound interest is interest that is paid on both the principal and interest that has already been generated.
We may calculate compound interest using the following straightforward formula:
That has to be clarified in order for us to address the issue at hand:
17400 invested at a 2.5% annual compounded rate for an 8-year period.
Let's take a look at what is provided and note it down.
Therefore, the principal is $43,000.00. In addition, we know that our rate is 2.5%, or 0.025
If it is annually compounded, n=1 times every year.
Additionally, t=8 years.
A = 17400(1 + 0.025/1)⁸ A = $20,146.60
Therefore, after 8 years, the balance will be $20,146.60.
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Therefore, after 8 years, the interest will be $20,146.60.
What is interest?When a customer pays interest to borrow money from a bank, for example, interest is referred to as a payment from the borrower in the finance industry.
The customer would pay an amount that is greater than the amount they borrowed due to interest.
The principal is the sum of money that was first invested or lent and upon which interest is based.
We refer to the process of calculating fresh interest based on the new principal (which is the old principal plus interest) at the conclusion of the subsequent payment period as compound interest when we add interest to interest.
So, compound interest is interest that is paid on both the principal and interest that has already been generated.
We may calculate compound interest using the following straightforward formula:
That has to be clarified in order for us to address the issue at hand:
17400 invested at a 2.5% annual compounded rate for an 8-year period.
Let's take a look at what is provided and note it down.
Therefore, the principal is $43,000.00. In addition, we know that our rate is 2.5%, or 0.025
If it is annually compounded, n=1 times every year.
Additionally, t=8 years.
A = 17400(1 + 0.025/1)⁸ A = $20,146.60
Therefore, after 8 years, the balance will be $20,146.60.
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You work independently as a copier salesperson. Last month, you sold 26 printers at a cost of $1,750 each. The cost of goods sold for each printer is $975. Additional operating expenses include your salary ($3,000/month), advertising ($50/month), and office lease ($550/month). Use this information to calculate (a) your gross profit and (b) your net income.
To calculate the gross profit, we need to subtract the cost of goods sold (COGS) from the revenue generated by sales. The revenue generated by sales can be found by multiplying the number of printers sold by the selling price of each printer, which is $1,750.
Revenue generated by sales = 26 x $1,750 = $45,500
The cost of goods sold for each printer is $975, so the total cost of goods sold for all 26 printers is:
Total cost of goods sold = 26 x $975 = $25,350
Therefore, the gross profit can be calculated as:
Gross profit = Revenue generated by sales - Total cost of goods sold
Gross profit = $45,500 - $25,350
Gross profit = $20,150
The gross profit is $20,150.
To calculate the net income, we need to subtract all operating expenses from the gross profit. The operating expenses include your salary ($3,000/month), advertising ($50/month), and office lease ($550/month).
Total operating expenses = $3,000 + $50 + $550
Total operating expenses = $3,600
Therefore, the net income can be calculated as:
Net income = Gross profit - Total operating expenses
Net income = $20,150 - $3,600
Net income = $16,550
The net income is $16,550.
In summary, the gross profit is the revenue generated by sales minus the cost of goods sold, which in this case is $20,150. The net income is the gross profit minus all operating expenses, which in this case is $16,550.
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please answer this question
Did I get the first question correct? Question 1:
The side length c of the triangle is equal to:
c^2=a^2+b^2 −2ab cosC
where a and b are the other two side lengths of the triangle, and C is the angle opposite side c.
To solve for c, we can plug in the values of a, b, and C into the formula and solve for c. For example, if a=3, b=4, and C=60 then we would plug in these values into the formula and solve for c as follows:
c^2=3^2+4^2 −2⋅3⋅4cos60
c^2=25
c= square root 25 =5
Therefore, the side length c of the triangle is equal to 5.
Answer:
Yes, you did solve it correctly, and the way you did it is fine
Step-by-step explanation:
You correctly applied the formula for the Law of Cosines to solve for the unknown side length c of a triangle, given the values of the other two side lengths and the angle opposite the unknown side. Specifically, you plugged in the given values of a, b, and C into the formula c^2 = a^2 + b^2 - 2ab cos(C) and then solved for c by taking the square root of both sides of the equation. Finally, you simplified the expression for c by calculating the square root of 25 to obtain a numerical value of c=5
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Maths
W is on the pic
The equation of line L is given as follows:
L: x = 2.
How to obtain the equation of line L?The equation of line L is the line of symmetry of the quadratic function given as follows:
y = 3x² - 12x + 7.
Considering a quadratic function with equation y = ax² + bc + c, the line of symmetry is defined as follows:
L: x = -b/2a.
The coefficients of the function are given as follows:
a = 3, b = -12.
Hence the equation of line L is defined as follows:
L: x = -(-12)/2(3)
L: x = 2.
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How to front end round 10,355?
Front-end rounding 10,355 to the nearest ten is 10,360.
Describe Rounding of Numbers?Rounding is the process of approximating a number to a specified degree of accuracy or precision. Rounding is useful when we want to simplify numbers or express them in a more manageable or meaningful way. There are various methods of rounding, such as rounding up, rounding down, and rounding to the nearest value.
To round a number to a specified degree of accuracy, we first identify the place value we are rounding to, such as units, tens, hundreds, etc. We then look at the digit in that place value and the digit to the right of it. If the digit to the right is 5 or greater, we round up by adding 1 to the digit in the place value we are rounding, and then replace all the digits to the right with zeros. If the digit to the right is less than 5, we round down by simply dropping all the digits to the right.
To front-end round a number, you look at the digit in the place value you are rounding to and round up or down based on the digit to the right of that place value.
To front-end round 10,355 to the nearest ten, we look at the tens place, which is the second digit from the right. The digit in the tens place is 5, which is greater than or equal to 5, so we round up.
To round up, we add 1 to the digit in the tens place and replace all the digits to the right with zeros. So, rounding up 10,355 to the nearest ten gives us:
10,360
Therefore, front-end rounding 10,355 to the nearest ten is 10,360.
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The winning long jump at a track meet was 27 ft 10 in. Convert this distance to meters. Round to the nearest hundredth.
The distance, 27 ft 10 in, is equivalent to 8.48 meters.
The Conversion Factor:1. Convert 27 ft first to inches by multiplying it by a conversion factor.
2. Add the converted value to 10 inches.
3. Convert the inch measure by multiplying it by a conversion factor.
4. Round to the nearest hundredth.
Convert the factor 12 inch/ 1 ft.
since 1 foot is equivalent to 12 inches.
= 27 ft × [tex]\frac{12inch}{1ft}[/tex] + 10 inch = 324 inch + 10 inch = 334 inch
This means that 27 ft 10 in is equivalent to 47/2 inches.
Again, The conversion factor 0.0254 m/ 1 inch
since there are 0.0254 meters in an inch.
[tex]334 inches[/tex] × [tex]\frac{0.00254 meters}{1 inch}[/tex]
= 334 × 0.00254 meters
= 8.4836 meters
Thus, distance, 25 ft and 20 inches, is equivalent to approximately 8.48 meters.
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HELP PLSZZZZSZZZZZZZZZZ need asap
Answer:
the answer is E
Step-by-step explanation:
find the logarithim of 6.373log4.948/[tex]\sqrt{0.004636[/tex]
The logarithm of 6.373log4.948/sqrt(0.004636) is approximately 2.2022
Understanding LogarithmLogarithm is the inverse operation of exponentiation. It is a function that tells you what power you need to raise a given base to in order to get a certain value.
The logarithm of a number x with respect to base a is denoted as logₐ(x).
For example, if we have a base of 2 and a value of 8, we can write:
log₂(8) = 3
Going back to our question, we can apply the basic knowledge of logarithm to solve the question.
First, simplify the expression:
6.373log4.948/sqrt(0.004636)
= 6.373 * log(4.948) / sqrt(0.004636)
= 6.373 * 1.6941 / 0.068
= 159.50
Now, we can find the logarithm of 159.50.
log(159.50) ≈ 2.2022
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Question 19 You want to buy an ordinary annuity that will pay you R4,000 a year for the next 20 years. You expect annual interest rates will be 8 percent over that time period. The maximum price you would be willing to pay for the annuity is closest to [1] R32,000 [2] R39,272 [3] R40,000 [4] R80,000
The maximum price you should be willing to pay for the annuity, given the cash flow and the interest rates, would be 2. R 39, 272
How to find the maximum price ?The maximum price to be paid for the annuity would be the present value of the annuity which can be found by the formula :
= Annuity x Present value interest factor of annuity, 20 years, 8 %
The annuity = R 4, 000
Present value interest factor of annuity, 20 years, 8 % = 9. 81815
The maximum you should pay for the annuity is therefore:
= 4, 000 x 9. 81815
= R 39, 272 . 60
= R 39, 272
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Please see the attached
Elsa has a 5:7 an odd of getting an extra-large stuffed animal against her.
Elsa has a 7:5 chance in her favor of getting an extra-large stuffed animal.
How to calculate odds?(a) The total number of balloons is 1 + 2 + 2 + 7 = 12. The number of balloons that are not extra-large is 1 + 2 + 2 = 5. So the odds against Elsa winning an extra-large stuffed animal are 5:7.
(b) The odds in favor of Elsa winning an extra-large stuffed animal are the opposite of the odds against winning an extra-large stuffed animal. So the odds in favor of Elsa winning an extra-large stuffed animal are 7:5.
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