(a) Null Hypothesis: The mean time that a customer spends in the restaurant for lunch is 24 minutes or more i.e. ≥24 (b)Alternative Hypothesis: The proportion of people who buy popcorn while going to the movies on a Saturday night is greater than 0.78 i.e. >0.78
Alternative Hypothesis: The mean time that a customer spends in the restaurant for lunch is less than 24 minutes i.e. <24
Null Hypothesis: The marginal propensity to consume is less than 85 cents out of every dollar i.e. ≤0.85 Alternative Hypothesis: The marginal propensity to consume is greater than 85 cents out of every dollar i.e. >0.85(c) Null Hypothesis: The proportion of people who buy popcorn while going to the movies on a Saturday night is less than or equal to 0.78 i.e. ≤0.78
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An orange drink is made using one part juice to four parts water. What proportion of the drink is juice? Give your answer as a fraction, decimal or percentage. A woman spends 675 on fond nd cor
The proportion of the drink that is juice is one part juice to four parts water. The proportion of the drink that is juice is 1:5. This can be written in fraction as 1/5 , in decimal as 0.25 and in percentage as 25%.
What is a ratio?A ratio is a mathematical comparison of two or more values. It is typically written as a fraction, with the values being separated by a colon (e.g. 3:4). The values in a ratio can represent any type of quantity, such as length, weight, or time.
How is a proportion different from a ratio?A proportion is a statement that two ratios are equal. For example, if the ratio of boys to girls in a class is 4:5, and the ratio of boys to the total number of students is 12:20, then the two ratios are in proportion. In contrast, a ratio is simply a comparison of two or more values without any equality statement.
An orange drink is made using one part juice to four parts water. The proportion of the drink that is juice is 1/5.The proportion of the drink that is juice is 1/5, which can be expressed as a decimal as 0.2 (1/5 = 0.2) or as a percentage as 20% (0.2 x 100 = 20).
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Use the Product or Quotient Rule to differentiate the function. 1. y =(x^2-3x)(x^2 + 1); 2. s(t) = (sqrt t+3) (4-t^2) 3. f(x)=x^4 sin x
The derivatives of the functions are as follows: y' = 4x^3+2x-3x^2-3 , s'(t) =[tex]2(2-t^2)/(2sqrt t) - 2t(sqrt t+3)/(2sqrt t)[/tex] , f'(x) = 4x^3sin x + x^4cos x
1. y' = (2x-3)(x^2+1) + (x^2-3x)(2x) = 4x^3+2x-3x^2-3
2. s'(t) = [tex](1/(2sqrt t))(4-t^2) + (sqrt t+3)(-2t) = 2(2-t^2)/(2sqrt t) - 2t(sqrt t+3)/(2sqrt t)[/tex]
3. f'(x) = 4x^3sin x + x^4cos x
1. Begin by applying the product rule to differentiate the function. The product rule states that the derivative of a product of two functions is equal to the product of the derivatives of the two functions.
y' = (2x-3)(x^2+1) + (x^2-3x)(2x)
2. Begin by applying the product rule to differentiate the function. The product rule states that the derivative of a product of two functions is equal to the product of the derivatives of the two functions.
[tex]s'(t) = (1/(2sqrt t))(4-t^2) + (sqrt t+3)(-2t)[/tex]
3. Begin by applying the quotient rule to differentiate the function. The quotient rule states that the derivative of the quotient of two functions is equal to the quotient of the derivatives of the two functions minus the product of the two functions divided by the square of the denominator.
f'(x) = 4x^3sin x + x^4cos x
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can someone please help I can't figure this out
Step-by-step explanation:
For the first equation to make a line plot a point at negitive 5 then go up three then go one to the right
For the second equation to make a like plot a point at positive 4 then go down three then go one to the left
Is the square of a sum the same as the sum of squares?
A number's square root multiplied by another number's square root does not always equal the total of these two numbers' square roots.
Why is it called sum of squares?A statistical method called the sum of squares (SS) is used in regression analysis to determine how well the data can fit the model and how dispersed the data are. Since it is determined by adding up the squared differences, the sum of squares is how it is calculated.
A sum's square is equal to the product of its summands' squares and its double products' sums of summands in twos.
So, it is not always true that the square root of a sum is equal to the sum of the square roots.
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What is obtuse triangle Class 7?
A obtuse triangle is a triangle in which one of the angles is greater than 90°.
An obtuse triangle can be mathematically defined as a triangle with one angle greater than 90°. The formula for calculating the angles of a triangle is known as the Law of Sines. The formula states that the ratio of the length of a side of the triangle to the sine of its opposite angle is the same for all sides. To calculate the angles of an obtuse triangle, we must first find the ratio of the sides to the opposite angle. For example, if we have a triangle with sides of length a, b and c, then the ratios of the sides to their opposite angles are a/sinA, b/sinB and c/sinC. Once we have found the ratios, we can use the Law of Sines to calculate the angles of the triangle. We can then determine if any of the angles are greater than 90°, which would indicate that the triangle is obtuse.
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Select all the values that are equivalent to the given expression. Express your answer in scientific notation.
(9.6 × 103) × (6.7 × 102)
The correct answer is 6.432 × 10 raised to the power of 6
What is the answer to this question?
Answer:
the one on the left
Step-by-step explanation:
This shows a direct relationship between X and Y
A grocery store sells sliced American cheese by weight. The relationship between the amount of American cheese in pounds, xx, and the total cost in dollars of the sliced American cheese, yy, is represented by a graph drawn in the xy-plane. If the point (4,164,16) lies on the graph, what does the ordered pair (4,164,16) indicate?
The ordered pair of (4 , 16) tells us that the 4 pounds of cheese have its cost as 16 dollars.
What is meant by ordered pair in mathematics?An ordered pair is a mathematical concept used to represent a point in a coordinate system. It is a pair of values, usually represented in the form of (x, y), where x and y are real numbers. The first value, x, represents the point's position along the horizontal (x) axis, and the second value, y, represents the point's position along the vertical (y) axis.
In the graph, what we are told is that if one purchases 4 pounds of the cheese, the amount that they would pay for the cheese would be 16 dollars.
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A.Direct
B.Inverse
C.neither
The given graph is of inverse function.
What is inverse function?A function that can change into another function in the opposite direction is known as an inverse function or anti function. In other words, the inverse of a function "f" will take y to x if any function "f" takes x to y. If a function is written as "f" or "F," the inverse function is written as "f-1" or "F-1."
What is the inverse formula?The original value for which a function produced its output is returned by the inverse function. Consider the inverse relationship between the functions f and g: f(g(x)) = g(f(x)) = x. The initial value is fetched by a function that is its inverse. Therefore, the inverse of f is g(y) = (y-5)/2 = x. (x).
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The art class lasts 90 minutes. The teacher explains the project for 25 minutes and allows 15 minutes for questions and discussion. He talks to each student about their project for 5 minutes.Write an expression to show how many students are in the class.
The expression for the students in the class is 5N + 25 + 15 = 90 or N = 10
How to write an expression to show how many students are in the class?
An algebraic expression is an expression that is made up of variables and constants along with algebraic operations such as addition, subtraction, multiplication, exponent, etc.
Let the number of students in class be N.
Therefore, from the information provided, the expression for the students in the class can be written as:
5N + 25 + 15 = 90
5N + 40 = 90
5N = 90 - 40
5N = 50
N = 50/5
N = 10
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true or false : A fair coin is flipped 5 times.
The probability of getting more heads than tails is 1/2
The probability of getting more heads than tails when a fair coin is flipped 5 times is 1/2.
True
The probability of getting more heads than tails is the same as the probability of getting an equal number of heads and tails, because the two outcomes are equally likely. The probability of getting an equal number of heads and tails is 1/2, so the probability of getting more heads than tails is also 1/2.
The probability of getting more heads than tails when a fair coin is flipped 5 times is 1/2, which is the same as the probability of getting an equal number of heads and tails.
The probability of getting more heads than tails when a fair coin is flipped 5 times is 1/2.
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Ayman is saving money to buy a game. The game costs $30 , and so far he has saved five-sixths of this cost. How much money has Ayman saved?
Answer: Ayman has saved $25
Step-by-step explanation: It's basically just 5/6th's of 30, which is 25.
Give PQ=24 PS=19 PR=42 TQ=10 M-PQR=106 m-QSR=49 and m-PRS=35
Considering the quadrilateral, the dimensions are as follows
QR = 19SR = 24PT = 21 SQ = 20< QRS = 74< PQS = 49< RPS = 39< PSQ = 57How to find the dimensionsThe given figure is a parallelogram, and the properties will be used in finding the required dimensions
QR = PS = 19 opposite sides of a parallelogram are equal
SR = PQ = 24 opposite sides of a parallelogram are equal
PT = PR / 2 = 42 / 2 = 21 (diagonals of a parallelogram bisects each other)
SQ = 2 * TQ = 2 * 10 = 20 (diagonals of a parallelogram bisects each other)
< QRS = < QPS and < PQR = < PSR (opposite angles of a parallelogram)
< QRS + < QPS + < PQR + < PSR = 360 (sum of angles of a quadrilateral)
2 < QRS + 2< PQR = 360
2 < QRS + 2 * 106 = 360
divide through by 2
< QRS + 106 = 180
< QRS = 180 - 106
< QRS = 74
< PQS = <QSR = 49 alternate angles
< RPS + < PRS + < PSR = 180 (angles on a triangle)
< RPS + 35 + 106 = 180
< RPS + 141 = 180
< RPS = 180 - 141
< RPS = 39
<PSQ + < QSR = < PSR adjacent angles
< PSQ + 49 = 106
< PSQ = 106 - 49
< PSQ = 57
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Help pls
Directions: Identify the binomial factors of the following trinomials.
1. x2 + 9x + 20
2. x2 + 7x + 12
3. x2 + 8x + 15
4. x2 + 7x + 12
5. x2 + 11x + 10
6. x2 + 7x + 6
7. x2 + 5x + 4
8. x2 + 10x + 21
9. x2 + 10x + 16
10. x2 + 10x + 9
11. x2 + 12x + 20
12. x2 + 15x + 14
13. x2 + 13x + 42
14. x2 + 9x + 18
15. x2 + 16x + 60
The factor form of quadratic equations are listed below:
(x + 4) · (x + 5) (x + 3) · (x + 4) (x + 3) · (x + 5) (x + 3) · (x + 4) (x + 10) · (x + 1) (x + 6) · (x + 1) (x + 5) · (x + 1) (x + 7) · (x + 3) (x + 8) · (x + 2) (x + 10) · (x - 1) (x + 10) · (x + 2) (x + 14) · (x + 1) (x + 6) · (x + 7) (x + 6) · (x + 3) (x + 10) · (x + 6)How to determine the binomial factors of quadratic equations
In this problem we find fifteen cases of quadratic equations of the form x² + b · x + c, where b, c are real coefficients. This kind of quadratic equation can be modified into factor form by means of the following rule:
x² - (r₁ + r₂) · x + r₁ · r₂ = (x - r₁) · (x - r₂)
- r₁ - r₂ = b
r₁ · r₂ = c
Where r₁, r₂ are roots of the polynomial.
Now we proceed to find the binomial factors:
Case 1
x² + 9 · x + 20 = (x + 4) · (x + 5)
Case 2
x² + 7 · x + 12 = (x + 3) · (x + 4)
Case 3
x² + 8 · x + 15 = (x + 3) · (x + 5)
Case 4
x² + 7 · x + 12 = (x + 3) · (x + 4)
Case 5
x² + 11 · x + 10 = (x + 10) · (x + 1)
Case 6
x² + 7 · x + 6 = (x + 6) · (x + 1)
Case 7
x² + 5 · x + 4 = (x + 5) · (x + 1)
Case 8
x² + 10 · x + 21 = (x + 7) · (x + 3)
Case 9
x² + 10 · x + 16 = (x + 8) · (x + 2)
Case 10
x² + 10 · x + 9 = (x + 10) · (x - 1)
Case 11
x² + 12 · x + 20 = (x + 10) · (x + 2)
Case 12
x² + 15 · x + 14 = (x + 14) · (x + 1)
Case 13
x² + 13 · x + 42 = (x + 6) · (x + 7)
Case 14
x² + 9 · x + 18 = (x + 6) · (x + 3)
Case 15
x² + 16 · x + 60 = (x + 10) · (x + 6)
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To indirectly measure the distance across a river, Arun stands on one side of the river and uses sight-lines to a landmark on the opposite bank. Arun draws the diagram below to show the lengths and angles that he measured. Find PRPR, the distance across the river. Round your answer to the nearest foot.
The distance PR, representing the distance across the river, is given as follows:
PR = 294 ft.
What are similar triangles?Similar triangles are triangles that share these two features given as follows:
Congruent angle measures.Proportional side lengths.The two similar triangles for this problem are given as follows:
POC and PRE.
Hence the distance PR is symbolized as follows:
PR = x.
The equivalent side lengths form a proportional relationship, given as follows:
x/(x + 160) = 230/355.
Hence, applying cross multiplication, the distance PR is obtained as follows:
355x = 230(x + 160)
355x = 230x + 36800
125x = 36800
x = 36800/125
x = 294 ft.
Missing InformationThe diagram is given by the image presented at the end of the answer.
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Answer: The distance across the river is 181 ft.
Step-by-step explanation:
in photo
Please help I’m stuck on this question.
The requried simplified value of the given expression is given as -a³/4b². Option B is correct.
What is simplification?The process in mathematics to operate and interpret the function to make the function or expression simple or more understandable is called simplifying and the process is called simplification.
Here,
Given expression,
= [-b³]⁰/[2ba⁻⁷ × -2ba⁴]
= -1 / 4b²a⁻³
= -a³/4b²
Thus, the requried simplified value of the given expression is given as -a³/4b². Option B is correct.
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Given a polynomial function f(x) = 2x2 + 7x + 6 and an exponential function g(x) = 2x + 5, what key features do f(x) and g(x) have in common?
Both f(x) and g(x) increase over the interval of [–4 , ∞)
Both f(x) and g(x) have the same x-intercepts of (–2, 0) and (–1.5, 0).
Both f(x) and g(x) have the same y-intercept of (0, 6).
Both f(x) and g(x) have the same range of (–∞, 0].
The solution is Option C.
The functions f ( x ) and g ( x ) have the same y-intercept of ( 0 , 6 )
What is an Equation?Equations are mathematical statements with two algebraic expressions flanking the equals (=) sign on either side.
It demonstrates the equality of the relationship between the expressions printed on the left and right sides.
Coefficients, variables, operators, constants, terms, expressions, and the equal to sign are some of the components of an equation. The "=" sign and terms on both sides must always be present when writing an equation.
Given data ,
Let the first function be represented as A
Let the second function be represented as B
Now , the value of A is
f ( x ) = 2x² + 7x + 6 be equation (1)
Now , the value of B is
g ( x ) = 2ˣ + 5 be equation (2)
Now , on simplifying the equation , we get
To find the y-intercepts of the function ,
Substitute the value of x = 0 in the equation , we get
f ( 0 ) = 2 ( 0 )² + 7 ( 0 ) + 6
On simplifying the equation , we get
y = 6
Now , g ( x ) = 2ˣ + 5
Substitute the value of x = 0 in the equation , we get
g ( 0 ) = 2⁰ + 5
g ( 0 ) = 1 + 5
g ( 0 ) = 6
Hence , the y intercepts of the functions f ( x ) and g ( x ) is ( 0, 6 )
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An apartment has 972 square feet of carpeting. How much is this in square meters? Use the following conversion: 1 square meter is 10.8 square feet.
(Giving Brainliest, thanks, 5 stars and 20 points for correct answer cause I do that)
(it also gave me that conversion)
Answer: 90 sqare meters
Step-by-step explanation: you have to take 972 and divide it by 10.8 then you get your answer
How do you calculate the x-intercept of a line written in Standard Form?
A. Set y = 0 and solve for x.
B. Convert to Slope-Intercept Form and use the value of b.
C. The x-intercept is the coefficient of the x-term in the equation.
D. Set x = 0 and solve for y.
The y intercept of a line written in the standard form is calculated by
D. Set x = 0 and solve for y.How to solve for the interceptA linear function consists of functions where the variables has exponents of 1. The relationship is expressed in the form.
y = mx + c
definition of variable to suit the problem
y = output variable
m = slope
x = input variable
c = y intercept
To solve for the intercept in the equation y = mx + c x is set to zero
y = mx + c
y = m(0) + c
y = 0 + c
y = c
hence the intercept is equal to c when x is zero
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What is the perimeter of a rectangle with a length of Eight and one-sixth feet and a width of Six and two-thirds feet?
- 14 3/9 ft
- 16 2/6 ft
- 29 4/6 ft
- 48 3/18 ft
The required perimeter of the given rectangle is (C) 29 4/6 ft.
What is a rectangle?A rectangle is a quadrilateral with four right angles in the Euclidean plane.
It can alternatively be described as a parallelogram with a right angle or an equiangular quadrilateral, where equiangular denotes that all of its angles are equal.
A square is a rectangle with four equally long sides.
So, the perimeter formula is:
2(l+b)
Now, calculate the perimeter as follows:
2(l+b)
2(8 1/6+ 6 2/3)
2(49/6 + 20/3)
2(89/6)
178/6
29 4/6 ft
Therefore, the required perimeter of the given rectangle is (C) 29 4/6 ft.
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Correct question:
What is the perimeter of a rectangle with a length of Eight and one-sixth feet and a width of Six and two-thirds feet?
A. 14 3/9 ft
B. 16 2/6 ft
C. 29 4/6 ft
D. 48 3/18 ft
A redfish can swing at a rate of 50 miles per hour how many feet per hour is this
Answer:
264000 feet/hour
Step-by-step explanation:
1 mile = 5280 feet
5280 * 50 = 264000
50 miles/hour = 264000 feet/hour
Solve the inequality 4/3|1/4x+3|<4
Ox>-13 and x < -11
Ox<-13 and x > -11
Ox>-24 and x < 0
Ox>-24 and x > 0
The inequality 4/3|1/4x+3|<4 are Ox>-13 and x < -11 or Ox<-24 and x > 0
How do we determine the absolute values?We can begin by isolating the absolute value on one side of the inequality:
4/3|1/4x+3|<4
|1/4x+3|<3/2
We can then split this inequality into two cases, one for when 1/4x+3 is positive and one for when it is negative:
1/4x+3>0: 1/4x+3>3/2, so multiplying both sides by 4, we get x>-13 and x<-11
1/4x+3<0: 1/4x+3<-3/2, so multiplying both sides by -4, we get x<-24 and x>0
So, the solution is: Ox>-13 and x < -11 or Ox<-24 and x > 0
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Look at the image down below for question.
Using proportions and ratios, the answer is m / 160(2/5) = 37(7/10) / 100 which is option A
What is ProportionsProportions are relationships between two or more related numerical values, usually expressed as fractions or ratios. They are used to compare the relative sizes of different quantities, or to assess the relationship between two different sets of data. Proportions can also be used to make predictions about future events, or to compare different sets of data.
In this problem, we can approach this as
100 pounds on Earth = 37(7/10) pounds on Mars
160(2/5) pounds on Earth = m pounds on Mars
Cross multiply both sides and solve
This will become;
m = [160(2/5) * 37(7/10)] / 100
This can be written in ratio as;
m / 160(2/5) = 37(7/10) / 100
This is option A
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help is very much needed.
MAKE THE ANSWER IS RIGHT!!! 100 points + Brainliest. 100 points + Brainliest Let C represents the cost in dollars and R represents the revenue in dollars. What is the break-even point? Use a table to help if necessary.
C=36x+200
R=76x
Break-even point: (,)
Answer: accidentally did that sorry
Step-by-step explanation:
Kevin runs a legal services company. He charges a registration fee of $150 when a new client is registered. He will then meet with the client to discuss their legal needs and bills they $200 per hour. Write an linear equation that models this relationship.
Problem Walkthrough: Find the area of this figure.
Use 3.14 to approximate pi.
6
6
9
To solve for the area, split the figure into simple figures as
shown below. Solve for the area of each and combine.
Triangle
[?]
Rectangle
6
+
+
D
Half-circle
=
Enter the value
that belongs in
the green box.
Total Area
Enter
The total area of the figure when divided in rectangle, triangle and half circle is 86.13 square units.
What is area?Area is the room contained by a specific shape or location. It speaks of how much room is consumed. The area and perimeter of the shape will increase in size as it gets bigger.
Given figure comprises of a rectangle, triangle, and a half circle.
The area of the figure is thus calculated by adding the value of all the figures as follows:
A = Area of triangle + Area of rectangle + Area of semi-circle
[tex]A = \frac{1}{2} (b) (h) + (l)(b) + \frac{1}{2} (\pi r^{2} )\\[/tex]
Substitute the value of length, width, height and radius:
[tex]A = \frac{1}{2} (6) (6) + (9)(6) + \frac{1}{2} (3.14 (3^{2}) )\\\\\\A = 18 + 54 + 14.13\\\\A = 86.13[/tex]
Hence, the area of the figure is 86.13 square units.
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Five friends together earned $165 raking leaves. They divided the money evenly among the 5 of them. Maria earned another $10 walking a neighbor's dog. How much money did Maria earn in all?Enter your answer in the box.
Write the equation of the line represented by the following graph
Answer:
Y=-[tex]\frac{1}{2}[/tex] + 4
Step-by-step explanation:
You will be using the equation of Y= Mx+B
First you must find the Y intercept, where the line crosses the Y axis, this is at positive four, this will be your B value. then you find the slope by picking 2 easily readable points on the graph, to do this i will choose (0,4) and (2,3), then you find the change in Y and put it in a fraction over the change in x, since this is going down the slope will have a negative infront of it, so your fraction is [tex]\frac{3-4}{2-0}[/tex] which equates to [tex]\frac{-1}{2}[/tex] so your slope is -1/2 (this is M value)
so lastly you plug it all in, Y= -1/2x+4
Find the sum of the first ten terms
using the formula:
a(1-rn)
1,3/2,9/4,27/8,81/16
Answer:
1
Step-by-step explanation:
T1(a) = 1
T2(ar) = 3/2
T3(ar²) = 9/4
T4(ar³) =27/8
T5(ar⁴) = 81/16
lets look for r
by using the formula
[tex] \frac{t \\ 2}{t1} = \frac{t3}{t2} = \frac{t4}{t3} = r[/tex]
let us use T2/T1
[tex] \frac{ \\ ar}{a} = \frac{3}{2} \div 1 = \frac{3}{2} \times \frac{1}{1} = \frac{3}{2} [/tex]
[tex]r = \frac{ \\ 3}{2} [/tex]
since r > 1 we will use this formula
[tex]s10 = \frac{a \\ ( r - 1)}{r - 1} [/tex]
by substituting
[tex]s10 = \frac{ \\ 1( \frac{3}{2} - 1)}{ \frac{3}{2} - 1 } [/tex]
[tex] = \frac{ \\ \frac{3}{2} - 1}{ \frac{3}{2} - 1 } [/tex]
[tex] = \frac{ \\ \frac{1}{2} }{ \frac{1}{2} } [/tex]
[tex] \frac{1}{2 \\ } \div \frac{1}{2} [/tex]
[tex] \frac{1}{2 \\ } \times \frac{2}{1} [/tex]
[tex] \frac{2}{2 \\ } = 1[/tex]
therefore the sum of first ten term of the sequence is 1