Feng has a toy car collection he keeps 324 of the toy cars on his wall which is 81% of his entire collection what is the total number of toy cards in his collection
400 is the total number of toy cards in his collection. This will be the total number of toy cards in his collection if Feng keeps 324 of the toy cars on his wall which is 81% of his entire collection.
A fraction is a mathematical value that illustrates the components of a whole. In general, the whole can be any particular thing or value, and the fraction might be a portion of any quantity out of it. The top and bottom numbers of a fraction are explained by the fundamentals of fractions. The bottom number reflects the entire number of components, while the top number represents the number of chosen or coloured portions of the whole.
Based on the given conditions, formulate: 324/81%
Convert decimal to fraction: 324/81/100
Divide a fraction by multiplying its reciprocal 324 * 100 / 81
Reduce the expression to the lowest term: 4*100
Calculate the product or quotient: 400
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a box contains 75 red marbles, 37 white marbles, and 19 blue marbles if a marble is randomly selected from the box, what's the probability that it is not blue
The probability that it the marble taken out of the box is not blue is [tex]\frac{112}{131}[/tex].
What is the probability?Probability is a branch of math that studies the chance or likelihood of an event occurring.
There are [tex]75[/tex] red marbles, [tx]37[/tex] white marbles, and [tex]19[/tex] blue marbles.
If a marble is randomly selected from the box, we have to find the probability that it is not blue.
Then the total number of marbles = [tex]75 + 37 + 19 = 131.[/tex]
The probability that a marble is not blue:-
[tex]P[/tex](Not blue) = [tex]P[/tex](Red or White)
[tex]P[/tex](Red or White) = [tex]\frac{(75 + 37)}{131}[/tex]
[tex]P[/tex](Red or White) = [tex]\frac{112}{ 131}[/tex]
[tex]P[/tex](Not blue) = [tex]1 - P[/tex](Blue)
[tex]P[/tex](Not blue) = [tex]1 - \frac{19}{131}[/tex]
[tex]P[/tex](Not blue) = [tex]\frac{112}{ 131}[/tex]
Therefore, the probability that a marble selected from the box is not blue is [tex]\frac{112}{131}[/tex].
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In each expression below the numbers under the root sign all add to the same number, 10. Determine which expression is greatest. How?
a) √7+ √3
b) √6+ √4
c) √8+ √2
Answer:
Step-by-step explanation:
I think a calculator is the only way to solve this question:
[tex]\sqrt{7} +\sqrt{3} = 2.96\\\\\sqrt{6} +\sqrt{4} = 2.54\\\\\sqrt{8} +\sqrt{2} =3.07[/tex]
So (c) is the greatest.
Find the angle measures for m∠QRS and m∠SRT.
Answer:
its 126 and 54 hope this helps
Nine from shared 12 pounds of pecans equals how many pounds of pecans does each friend get
Answer:
Each student's share is 1 1 3 1\dfraction{1}{ 3 } 131 pounds of pecans.
Data were recorded for a car's fuel efficiency, in miles per gallon (mpg), and corresponding speed, in miles per hour
(mph). Given the least-squares regression line, In(Fuel Efficiency) = 1.437 + 0.541 In(Speed), what is the predicted fuel
efficiency for a speed of 30 mph?
17.67 mpg
26.50 mpg
30.00 mpg
37.74 mpg
The predicted fuel efficiency for a speed of 30 miles per hour is given as follows:
26.50 mpg.
How to calculate the numeric value of a function or of an expression?To calculate the numeric value of a function or of an expression, we substitute each instance of any variable or unknown on the function by the value at which we want to find the numeric value of the function or of the expression presented in the context of a problem.
The function for this problem is defined as follows:
In(Fuel Efficiency) = 1.437 + 0.541 In(Speed).
The speed is of 30 miles per hour, hence the predicted fuel efficiency is given as follows:
In(Fuel Efficiency) = 1.437 + 0.541 x In(30).
In(Fuel Efficiency) = 3.277.
The exponential is the inverse of the ln, hence:
Fuel Efficiency = e^3.277
Fuel Efficiency = 26.50 mpg.
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I need help on these!
Jack earns $15.00 per hour plus $2.50 for each pizza delivery. The expression
15h + 2.50d can be used to find the total earnings after h hours and d deliveries have been made. How much money will Jack earn after working 15 hours and making 8 deliveries?
Answer:
$245
Step-by-step explanation:
15h+2.50d
= 15(15)+2.50(8)
= 225+20
= $245
Find the volume and surface area of soda if the radius is 6cm and the height is 11cm
The soda can has an estimated volume of 1,026.72 cubic centimeters and an estimated surface area of 452.39 square centimeters.
To find the volume and surface area of a soda can with radius 6 cm and height 11 cm, we can use the formulas:
Volume of cylinder = πr²h
Surface area of cylinder = 2πrh + 2πr²
Substituting the given values, we get:
Volume = π × 6² × 11
Volume = 1,026.72 cubic centimeters (rounded to two decimal places)
Surface area = 2π × 6 × 11 + 2π × 6²
Surface area = 452.39 square centimeters (rounded to two decimal places)
Therefore, the volume of the soda can is approximately 1,026.72 cubic centimeters, and the surface area is approximately 452.39 square centimeters.
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Will a 12.5-inch x 17-inch rectangular tray fit in
the box shown? Explain.
Please help!!!
Therefore, the correct response is OB: No, the box is a rectangle, and the tray's 12.5-inch length is greater than the box's 11-inch breadth.
what is rectangle ?A rectangle is a geometric shape with four edges and four angles that exists in two dimensions. Because it is a sort of quadrilateral, it has four sides that are parallel to one another. Rectangles are a form of parallelogram because they have opposite sides that are the same length and opposite angles that are the same size. A rectangle's two adjacent sides make right angles, so all four of the angles, which each measure 90 degrees, are right angles.
given
The tray has a breadth of 17 inches and a length of 12.5, according to the measurements given. The package is 13 inches by 11 inches by 11 inches in size.
The platter can fit inside the box because its length is less than the box's length, which is 13 inches. But we also need to think about the box's breadth and height.
The tray cannot fit inside the box in that dimension because its width, which is 17 inches, is larger than the box's, which is 11 inches. The tray cannot fit inside the box because the height of the box is also 11 inches, which is shorter than the length of the tray neither in that realm.
Therefore, the correct response is OB: No, the box is a rectangle, and the tray's 12.5-inch length is greater than the box's 11-inch breadth.
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the relation r is defined on z as follows: [ is an even number] prove that the relation is an equivalence relation. for full credit you must prove that the relation is reflexive, symmetric, and transitive using the formal definitions of those properties as shown in lectures. you must give your proof line-by-line, with each line a statement with its justification. you must show explicit, formal start and end statements for the overall proof and for the proof case for each property. you can use the canvas math editor or write your math statements in english. for example, the universal statement that is to be proved was written in the canvas math editor. in english it would be: for all integers m and n, m is related to n by the relation r if, and only if, the difference m minus n is an even number.
Let m and n be two arbitrary integers. We want to prove that the relation R is an equivalence relation, i.e. it is reflexive, symmetric, and transitive.
Reflexive: We must show that mRm for all m ∈ Z.
Since the difference of m and m is 0, which is an even number, we have mRm.
Therefore, the relation R is reflexive.
Symmetric: We must show that if mRn, then nRm.
Let mRn, i.e., the difference of m and n is an even number.
Then the difference of n and m is also an even number.
Therefore, nRm, and the relation R is symmetric.
Transitive: We must show that if mRn and nRp, then mRp.
Let mRn and nRp, i.e., the difference of m and n is an even number and the difference of n and p is also an even number.
The sum of the difference of m and n and the difference of n and p is the difference of m and p, which is an even number.
Therefore, mRp, and the relation R is transitive.
Since the relation R is reflexive, symmetric, and transitive, it is an equivalence relation.
Conclusion: The relation R is an equivalence relation.
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Prove the following statement directly from the definition of divisibility. For all integers a, b, c, and d, if aſc and bld then ab|cd. Proof: Let a, b, c, and d be any integers such that alc and b|d. Then by definition of divisibilityq c= ar and d = bs for some integers r and s. Then cd equals the product of ab and a number that can be written in terms of r and s as follows: cd = ab: , which is an integer because products A of integers are integers. (Simplify your answer completely.) Thus cd = ab · (an integer), and so ablcd by definition of divisibility.
The cd = ab · (an integer), and so ab | cd by definition of divisibility.
The question wants us to prove the following statement using the definition of divisibility. For all integers a, b, c, and d, if aſc and bld, then ab|cd.Definition of divisibility: Let a and b be integers. We say that b divides a or b is a divisor of a if there exists an integer k such that a = bk.
If b divides a, then we write b | a.Let a, b, c, and d be any integers such that alc and b | d. Then by definition of divisibility, c = ar and d = bs for some integers r and s. Then cd equals the product of ab and a number that can be written in terms of r and s as follows:cd = ab · rs, which is an integer because products of integers are integers.
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Solve the simultaneous equations below using substitution.
y=10x+6
2y+5x=17
Give your answers as integers or decimals.
Therefore, the solution to the system of equations is: x = 1/5 and y = 8.
What is equation?An equation is a mathematical statement that asserts the equality of two expressions. Equations contain variables, which are symbols that represent unknown or varying quantities, and constants, which are known values. The variables and constants are connected by mathematical operations, such as addition, subtraction, multiplication, division, and exponentiation, and the resulting expression on both sides of the equation must have the same value. Equations are used to solve problems, find unknowns, and express relationships between quantities. Some common types of equations include linear equations, quadratic equations, polynomial equations, exponential equations, and trigonometric equations.
Here,
We have the following system of equations:
y = 10x + 6
2y + 5x = 17
Using substitution method, we can substitute the expression for y in the second equation with the expression for y in the first equation:
2(10x + 6) + 5x = 17
Simplifying:
20x + 12 + 5x = 17
25x = 5
x = 5/25 = 1/5
Now we can substitute this value of x into either of the two original equations to find the corresponding value of y. Using the first equation:
y = 10(1/5) + 6
y = 2 + 6
y = 8
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The amount of variation in the data that is explained by the regression model is shown by the:A. Coefficient of determination.B. Dependent variable.C. Independent variable.D. None of the above.
The correct option is A. The amount of variation in the data that is explained by the regression model is shown by the Coefficient of determination.
Regression is a statistical technique used to estimate the relationship between a dependent variable and one or more independent variables. The dependent variable is the variable we are interested in understanding or predicting, while independent variables are the predictors. The goal of regression analysis is to create a mathematical equation that describes the relationship between these variables.
Regression models can be used for prediction or understanding the relationship between variables. The simplest form of regression is linear regression, which assumes a linear relationship between the dependent and independent variables. However, there are many types of regression models that can accommodate more complex relationships, including polynomial regression, logistic regression, and ridge regression.
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what is the x? please help its very important
For the following exercises, lines L1 and L2 are given. a. Verify whether lines L1 and L2 are parallel b. If the lines L1 and L2 are parallel, then find the distance between them. 255 LI : x = 1+t, y = t, z = 2 + t, t ER, L2 = x-3 = y-1 = z-3
The distance between L1 and L2 is $\frac{1}{\sqrt{3}}$ units.
Given two lines, L1 and L2, as follows:L1: x = 1 + t, y = t, z = 2 + tL2: x - 3 = y - 1 = z - 3a. Verification of parallel lines L1 and L2L1 can be written as the vector equation, (x, y, z) = (1, 0, 2) + t(1, 1, 1)Similarly, L2 can be written as the vector equation, (x, y, z) = (3, 1, 3) + t(1, 1, 1)We can see that both the vector equation of L1 and L2 has the same direction ratios (1, 1, 1).Therefore, both lines are parallel.b. Calculation of the distance between L1 and L2To find the distance between L1 and L2, we can find a point on L1 and its perpendicular distance from L2. As L2 passes through the point (3, 1, 3), we can take this point as a point on L1 as well. The perpendicular distance of (3, 1, 3) from L1 can be calculated as follows:We can write the general equation of a plane, P, containing the line L1 as follows: x - y + z - 3 = 0The normal vector of P is (1, -1, 1). Therefore, the perpendicular distance between P and the point (3, 1, 3) is given byd = $\frac{|(1, -1, 1)\cdot (3, 1, 3) - 3|}{\sqrt{1^2 + (-1)^2 + 1^2}}$d = $\frac{|-1|}{\sqrt{3}}$d = $\frac{1}{\sqrt{3}}$Therefore, the distance between L1 and L2 is $\frac{1}{\sqrt{3}}$ units.
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steve is taking a10 question multiple choice test where each question has 4 choices. what is the probability that guesing randomally at least 8 correct
The probability of guessing randomly at least 8 correct answers in a 10 question multiple choice test where each question has 4 choices is 0.0385 or approximately 3.85%.
To find the probability of guessing at least 8 correct answers, we need to use the binomial probability formula:
P(X ≥ k) = 1 - P(X < k)
where
P(X ≥ k) is the probability of getting k or more correct answers
P(X < k) is the probability of getting less than k correct answers
n is the total number of questions in the test = 10
p is the probability of guessing the correct answer = 1/4
q is the probability of guessing the incorrect answer = 3/4
Now, we need to find the probability of getting less than 8 correct answers:
P(X < 8) = Σ P(X = k) for k = 0 to 7
P(X = k) = nCk * p^k * q^(n-k)
where nCk is the binomial coefficient for choosing k items from a set of n items.
P(X < 8) = P(X = 0) + P(X = 1) + P(X = 2) + ... + P(X = 7)
P(X = k) = nCk * p^k * q^(n-k)
P(X = 0) = 10C0 * (0.25)⁰ * (0.75)¹⁰ ≈ 0.0563
P(X = 1) = 10C1 * (0.25)¹ * (0.75)⁹ ≈ 0.1875
P(X = 2) = 10C2 * (0.25)² * (0.75)⁸ ≈ 0.2813
P(X = 3) = 10C3 * (0.25)³ * (0.75)⁷ ≈ 0.2503
P(X = 4) = 10C4 * (0.25)⁴ * (0.75)⁶ ≈ 0.1450
P(X = 5) = 10C5 * (0.25)⁵ * (0.75)⁵ ≈ 0.0586
P(X = 6) = 10C6 * (0.25)⁶ * (0.75)⁴ ≈ 0.0161
P(X = 7) = 10C7 * (0.25)⁷ * (0.75)³ ≈ 0.0028
Therefore, P(X < 8) = 0.0563 + 0.1875 + 0.2813 + 0.2503 + 0.1450 + 0.0586 + 0.0161 + 0.0028 ≈ 1.0 - 0.0385 = 0.9615 or approximately 96.15%
The probability of guessing at least 8 correct answers:
P(X ≥ 8) = 1 - P(X < 8) ≈ 1 - 0.9615 = 0.0385 or approximately 3.85%
The problem seems incomplete, it must have been...
"Steve is taking a 10-question multiple choice test where each question has 4 choices. What is the probability that guessing randomly will give him at least 8 correct answers?"
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HELPPPP HURRY PLSS………………..
Answer:
C is your answer
Step-by-step explanation:
in my opinion, i think it would be the mode.
For each trigonometric expression in the lefthand column, choose the expression from the righthand column that completes a fundamental identity. Enter the appropriate letter (A,B,C,D, or E) in each blank. 1. 1; A. sin^(x); B. sin (x)+cos (x) sin(x) 2. sec^2 (x) 3. tan(x) C. cos(x) D. tan2(x) 1 cos(x) 4. cot(x) 5. 1 -cos2(x) E. sin(x)
Answer:
cot(-x) cos(-x) + sin(-x)= f(x) = (1 point) Simplify and write the trigonometric expression in terms of sine and cosine: 1 tan u +cot u = f(u) f(u) (1 point) Simplify and write the trigonometric expression in terms of sine and cosine: |(1-cos y)(1 +cos y) (f(y) f(y)= (1 point) tings sin f If sin 1+cos t tan r then A+tan t A = 1 then (1 point) If sec t - tan t = f()+tan f)= (2 points) If tan2 t - sin2 t = sind r then cos t the positive power a = the positive power b = sec r-1 A-COS 1 (1 point) If then A+cos sec 1+1 gs A = A+sin x = B-sin x then (2 points) If (tanx + sec x)2 A = В Vx- 1 (1 point) If 0 u< r/2 and x = f(u), where sec u, then f(u) = (1 point) Simplify the expression as much as possible. cos (t)-1 help (formulas) sin(t) IS (1 point) Simplify and write the trigonometric expression in terms of sine and cosine: 2+tan2 x sec x -1 (f (x) f(x)= (1 point) Simplify completely into an expression with sin(A) or cos(A) only: sin(A) tan(A) + cos(A) = (1 point) Simplify the expression as much as possible. 1 1 + 1 + sin(t) help (formulas) 1-sin(t)
sin x + cot x cos x =
f(x)
f(x)=
(1 point) Simplify and write the trigonometric expression in terms of sine and cosine:
2 + tan2 x
- 1 (f(x)
sec x
f(x) =
Annie's Pie Shop has 12 pies for sale, including 4 chocolate cream pies.
What is the probability that a randomly selected pie will be a chocolate cream pie?
Write your answer as a fraction or whole number.
The best solution gets brainlist
Answer: 1/3
Step-by-step explanation:
The probability of selecting a chocolate cream pie can be found by dividing the number of chocolate cream pies by the total number of pies:
Probability of selecting a chocolate cream pie = Number of chocolate cream pies / Total number of pies
Probability of selecting a chocolate cream pie = 4 / 12
Simplifying this fraction by dividing the numerator and denominator by 4 gives:
Probability of selecting a chocolate cream pie = 1/3
Therefore, the probability of selecting a chocolate cream pie from Annie's Pie Shop is 1/3.
for the area of a square to triple, the new side lengths must be the length of the old sides multiplied by:
To triple the area of a square, the new side lengths must be the length of the old sides multiplied by the square root of three (√3).
What is a square?A square is a two-dimensional (2D) geometric shape that has four equal sides, and its angles are right angles, i.e., they measure 90°. The perimeter of a square is the sum of the length of all its sides, and its area is the product of its length and width. The diagonals of a square are equal in length and intersect at right angles.
To triple the area of a square, you need to increase the length of the square's sides by a certain factor. That factor is the square root of three, which is approximately 1.732. This implies that if the old side length of the square is "x," then the new side length of the square will be 1.732x.
This ratio of new side length to old side length of the square will triple the square's area (since (1.732x)² = 3x²). Therefore, to triple the area of a square, the new side lengths must be the length of the old sides multiplied by the square root of three (√3).
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below is survey results describing the survival rate and life expectancy in a certain population. p(n) stands for the probability of a new-born to reach the age of n years. n 55 60 65 70 p(n) 0.903 0.882 0.742 0.657 according to the given survey, answer the following questions: what is the probability of a 65 years old man to reach the age of 70? you can express your answer as a fraction, decimal, or a percentage. if you asnwer in decimal, include at least 3 digits after the decimal point. if you answer is a percentage, make sure to include a % sign in your answer. symbolic expression given that the probability that a man who just turned 70 will die within the next 5 years is 0.176, what is the probability for a man to survive till his 75th birthday, i.e., what is p(75)? you can express your answer as a fraction, decimal, or a percentage. if you asnwer in decimal, include at least 3 digits after the decimal point. if you answer is a percentage, make sure to include a % sign in your answer.
The probability that a 65-year-old man will survive to reach the age of 70 is 88.4%, and also the probability man to survive till his 75th birthday is approx.59.952%.
The probability of a 65-year-old man reaching the age of 70 is the probability of surviving from age 65 to age 70, which is given as
p(70)/p(65) ⇒ 0.657/0.742 ≈ 0.88544 or 88.544%.
The probability of a man who just turned 70 dying within the next 5 years is 0.176.
Therefore, the probability of surviving for the next 5 years after turning 70 is
⇒ 1 - 0.176 ⇒ 0.824.
Thus, the probability of a man surviving till his 75th birthday is the probability of surviving from age 70 to age 75, which is given as
p(75)/p(70) ⇒ 0.657/0.903 × 0.824
≈ 0.59952 or 59.952%.
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the mean height of men is about 69.2 69.2 inches. women that age have a mean height of about 63.7 63.7 inches. do you think that the distribution of heights for all adults is approximately normal? explain your answer.
Yes, the distribution of heights for all adults is approximately normal because normal distribution has a bell-shaped curve. The bell curve indicates that the majority of the data points are located around the mean, with fewer data points on either side. Furthermore, normal distribution has certain characteristics that are relevant to this question.
The average height of men is 69.2 inches, while the average height of women is 63.7 inches. Therefore, we can assume that the mean height for both genders would be approximately 66.45 inches, assuming the distribution is equal (i.e., half male, half female).
If we plot the data of both males and females together, the plot will likely resemble a bell curve as per the properties of normal distribution. Since most adults would fall within the average height range, the distribution of heights for all adults is considered approximately normal. Therefore, we can conclude that the distribution of heights for all adults is approximately normal.
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Suppose the entire pink arc measures 200 degrees and the entire blue arc measures 50 degrees, what would be measure of the manilla angle be?
Therefore, the measure of the manila angle is 110 degrees.
What is degree?The term "degree" can have several different meanings depending on the context. Here are a few possibilities:
Academic degree: This refers to the title or certificate awarded to a student upon the completion of a course of study at a college, university, or other educational institution. Examples of academic degrees include bachelor's degrees, master's degrees, and Doctoral degrees.
by the question.
Assuming that the pink, blue, and manila arcs are all part of the same circle, the sum of their measures must be 360 degrees.
Let's denote the measure of the manila arc as x degrees. Then we can set up an equation to solve for x:
200 degrees (pink arc) + 50 degrees (blue arc) + x degrees (manila arc) = 360 degrees
Simplifying the equation, we can solve for x:
x = 360 degrees - 200 degrees - 50 degrees
x = 110 degrees
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Lucia and Maria are business women who decided to invest money by buying farm land in Brazil. Lucia bought
11
1111 hectares of land in the first month, and each month afterwards she buys
5
55 additional hectares. Maria bought
6
66 hectares of land in the first month, and each month afterward her total number of hectares increases by a factor of
1. 4
1. 41, point, 4. They started their investments at the same time, and they both buy the additional land at the beginning of each month. What is the first month in which Maria's amount of land exceeds Lucia's amount of land?
Maria's amount of land first exceeds Lucia's amount of land after 3 months.
To solve this problem, we need to find out when Maria's total amount of land first exceeds Lucia's total amount of land. Let's start by writing out the formulas for the amount of land each woman has after n months
Lucia's land after n months = 11 + 5n
Maria's land after n months = 6 × 1.4^n
Now we want to find the month, n, when Maria's amount of land first exceeds Lucia's amount of land. So we need to solve the following inequality
6 × 1.4^n > 11 + 5n
We can solve this inequality by using a trial-and-error approach or by using a graphing calculator. Here's one way to solve it using trial-and-error
Let's start by plugging in n = 1 and see if Maria's land is greater than Lucia's land:
6 × 1.4^1 = 8.4
11 + 5 × 1 = 16
Since 8.4 < 16, we know that Maria's land is not greater than Lucia's land after 1 month.
Now let's try n = 2
6 × 1.4^2 = 11.76
11 + 5 × 2 = 21
Since 11.76 < 21, we know that Maria's land is still not greater than Lucia's land after 2 months.
Let's keep trying larger values of n until we find the first month when Maria's land is greater than Lucia's land:
n = 3
6 × 1.4^3 = 16.384
11 + 5 × 3 = 26
Since 16.384 > 26, we know that Maria's land is greater than Lucia's land after 3 months.
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The given question is incomplete, the complete question is:
Lucia and Maria are business women who decided to invest their money by buying farmland in Brazil. They started their investments at the same time, and each month they buy more land. Lucia bought 11 hectares of land in the first month, and each month afterwards she buys 5 additional hectares. Maria bought 6 hectares of land in the first month, and each month afterward her total number of hectares increases by a factor of 1.4. In which month will Maria's amount of land first exceed Lucia's amount of land?
an amusement park charges a $ entrance fee. it then charges an additional $ per ride. which of the following equations could bum so use to properly calculate the dollar cost, , of entering the park and enjoying rides?
The equation you would use to properly calculate the dollar cost of entering the park and enjoying rides is Total Cost = Entrance Fee + (Number of Rides x Ride Fee).
In this case, Total Cost is the cost of entering the park and enjoying rides, Entrance Fee is the fee for entering the park, Number of Rides is the number of rides you will be taking, and Ride Fee is the fee charged for each ride.
Thus, plugging in the given values, the equation becomes Total Cost = Entrance Fee + (Number of Rides x Ride Fee).
Therefore, if the Entrance Fee is $ and each ride costs an additional $ , the Total Cost of entering the park and enjoying rides is $ .
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What is an equation for the quadratic function represented by the table shown?
The polynomial function A(t) = 0.003631 +0.03746t? +0.10121 + 0.009 gives the approximate blood alcohol concentration in a 170-lb woman t hours after drinking 2 oz of alcohol on an empty stomach, fort in the interval [0,5). a. Approximate the change in alcohol level from 3 to 3.2 hours. b. Approximate the change in alcohol level from 4 to 4.2 hours. a. Let y = A(t). Which expression correctly approximates the change in alcohol level from 3 to 3.2 hours? O A. 0.2A (3) OB. 0.2A (3.2) OC. A'(3) OD. A'(3.2) l. The approximate change in alcohol level from 3 to 3.2 hours is (Round to three decimal places as needed.) . b. The approximate change in alcohol level from 4 to 4.2 hours is (Round to three decimal places as needed.)
a. To approximate the change in alcohol level from 3 to 3.2 hours and the correct expression is OC: A'(3).
For this we need to calculate the difference between the values of A(t) at t = 3.2 and t = 3. The expression that correctly approximates this change is given by: A'(3) * 0.2, where A'(t) is the derivative of A(t) with respect to t. Therefore, the correct expression is OC: A'(3).
b. Similarly, to approximate the change in alcohol level from 4 to 4.2 hours, we need to calculate the difference between the values of A(t) at t = 4.2 and t = 4. The expression that correctly approximates this change is again given by: A'(4) * 0.2. Therefore, the correct expression is also OC: A'(4).
To calculate the approximate changes in alcohol level, we need to find the derivative of A(t) with respect to t:
A'(t) = 0.03746 + 0.20242t
a. The approximate change in alcohol level from 3 to 3.2 hours is:
A'(3) * 0.2 = (0.03746 + 0.20242(3)) * 0.2 ≈ 0.118
Therefore, the approximate change in alcohol level from 3 to 3.2 hours is 0.118.
b. The approximate change in alcohol level from 4 to 4.2 hours is:
A'(4) * 0.2 = (0.03746 + 0.20242(4)) * 0.2 ≈ 0.149
Therefore, the approximate change in alcohol level from 4 to 4.2 hours is 0.149.
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Which pattern shows a quadratic relationship between the step number and the number of dots? Explain or show how you know.
Pattern B shοws a quadratic relatiοnship between the step number and the number οf dοts.
What is wοrd prοblem?Wοrd prοblems are οften described verbally as instances where a prοblem exists and οne οr mοre questiοns are pοsed, the sοlutiοns tο which can be fοund by applying mathematical οperatiοns tο the numerical infοrmatiοn prοvided in the prοblem statement. Determining whether twο prοvided statements are equal with respect tο a cοllectiοn οf rewritings is knοwn as a wοrd prοblem in cοmputatiοnal mathematics.
Here pattern B shοws a quadratic relatiοnship between the step number and the number οf dοts.
We can write quadradic equation as [tex]y=1+x^2[/tex]
Where y is number οf dοts and x is step number.
Then if x=0 and y=1
If x = 1 and y = 2
If x = 2 and y = 5
If x = 3 and y = 10
Hence Patten B fοllοws the quadratic realatiοnship.
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In the month of August, your electric bill was $145. 68. What is the hourly cost of electricity in your home?
The hourly cost of electricity in your home is $0.20
So, if we divide your $145.68 electric bill by the number of kilowatt-hours used in that month, we can determine the cost per kilowatt-hour.
If you used 500 kWh in the month of August, your cost per kWh would be $0.29136 ($145.68 / 500 kWh).
If you used 500 kWh in August, your average power usage would be approximately 0.69 kW (500 kWh / 720 hours).
To calculate the hourly cost of electricity, simply multiply the average power usage in kW by the cost per kWh.
Then, the hourly cost of electricity would be approximately $0.20 ($0.29136 * 0.69 kW).
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