The greatest common factor of 40 and 24 would be; 8.
What is an expression?Expression in maths is defined as the collection of numbers variables and functions by using signs like addition, subtraction, multiplication, and division.
We can rewrite this expression for distribution using the amount of times 8 goes into both numbers as;
8(5 + 3)
Using the distributive property, we get:
8(5) + 8(3) = 40 + 24.
Threfore,
The greatest common factor of 40 and 24 would be; 8.
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Im desperate for help in these grade 7 questions please help
What percentage of $680 is 490? ANSWER: 138.78%
The price is reduced from $680 to $490. What is the percentage decrease? ANSWER: 72.06%
Step-by-step explanation:
ANSWER: 138.78%
How did I get 138.78%?690 & 490 can be written as a fraction
which would be 680/490, how do I find the percentage?
you have to find an equivalent fraction with denominator of 100 for the problem we"ll get [tex]\frac{680}{490} x\frac{100}{100}[/tex] ( 680/490 x 100/100 ) Next divide the top and the bottom, 680 into 100 ( 680 x 100 ) and the bottom which would be 490 into 100 ( 490 x100 ), [tex]\frac{680x100}{490}[/tex] x [tex]\frac{1}{100}[/tex] if you cannot see: ( 680 x 100/490 x 1/100 Equation you have is: [tex]\frac{680 x 100}{490} x \frac{1}{100} = \frac{138.78}{100}[/tex]The final answer will be 138.78%, so the percentage is 138.78%. If your trying to figure it out on the calculator just type 680 divided by 490x100 which will also give the answer.72.06%How did I get 72.06%?490 and 680 can be written as a fraction
which would be 490/680, how do I find the percentage?
you have to find an equivalent fraction with denominator of 100 for the problem we"ll get [tex]\frac{490}{680} x\frac{100}{100}[/tex] ( 490/680 x 100/100 ) Next divide the top and the bottom, 490 into 100 ( 490 x 100 ) and the bottom which would be 680 into 100 ( 680x100 )now start solving it, [tex]\frac{490x100}{680}[/tex] x [tex]\frac{1}{100}[/tex] if you cannot see: ( 490 x 100/680 Equation you have is: [tex]\frac{490 x 100}{680} x \frac{1}{100} = \frac{72.06}{100}[/tex]The final answer will be 72.06%, so the percentage decreased by 72.06%. If your trying to figure it out on the calculator just type 490 divided by 680x100 which will also give the answer.
Simplify: 3x^2-9x over x^2-2x-3
Answer:
[tex] \frac{(3x(x - 3))}{(x - 3)(x + 1)} = \frac{3x}{x + 1} [/tex]
if a sloth is traveling at its top speed of 0.067 m/s how long does it take the sloth to travel a 11.5 meter tree
The time required for the sloth to travel an 11.5-meter tree is
171.64 seconds.
What is a unitary method?A unitary method is a mathematical way of obtaining the value of a single unit and then deriving any no. of given units by multiplying it with the single unit.
Given, A sloth is traveling at its top speed of 0.067 m/s.
∴ The time required for the sloth to travel an 11.5-meter tree is,
= (11.5/0.067) secs.
= 171.64 seconds.
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Which box-and-whisker plot represents this data:6,7,9,9,20,22,26,28,29,30
The last boxplot is the one that displays the values of the distribution that is given.
What is the range?The range of a function in mathematics can refer to one of two ideas that are connected in some way: Codomain for the function an illustration of the action If there is precisely one y in Y and there are two sets X and Y, then a binary relation f between X and Y is a function that connects x and y.
Here ,Given information:
6,7,9,9,20,22,26,28,29,30
N = 10 observations were made.
The base number is 6. ( least value)
Quartile lower= n+1(0.25)
term = 0.25(13) = 3.25term = 13
Median equals 0.5 (n + 1)
term = 0.5(13) = 6.5 term = (20 + 24) /2 = 22
Upper quartile: 0.75 (13)
A term equals 9.75 a term equals 26.5
Interquartile Range (IQR) is equal to= Q3 - Q1= (26.5 - 13) = 13.5
The highest value is 30. (highest value in the distribution)
As a result, the Last boxplot is the one that shows the distribution that is given.
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You receive a call from a taxpayer who has concerns with her account. The taxpayer has been explaining her concerns for over five minutes. As she is talking, you notice that your lunch break was supposed to begin two minutes ago. In your department, there are strict guidelines on taking lunch breaks during the allotted times. These guidelines are in place to ensure that the taxpayer hotlines are staffed appropriately.
Email your manager to notify her that you are running over on a call and ask her what should you do.
As my manager now knows that I am running over on a call, she could allow me to have a lunch break of whatever time I invested in the taxpayer's call. By doing this, both the taxpayer and I can be stress free.
What Is a Taxpayer?
A taxpayer is anybody who owes taxes to the federal, state, or municipal governments, whether they are an individual or a corporation. Governments primarily obtain their funding through taxes, which are levied on both citizens and companies.
According to the rules of the Income Tax Act, a taxpayer is a person or a business that pays taxes on its income each year. It becomes lawful after you file income tax returns and reveal your revenues.
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The quality-control inspector of a production plant will reject a batch of syringes if two or more defective syringes are found in a random sample of eight syringes taken from the batch. Suppose the batch contains 5% defective syringes. A button hyperlink to the SALT program that reads: Use SALT.
(a) Make a histogram showing the probabilities of r = 0, 1, 2, 3, , 7 and 8 defective syringes in a random sample of eight syringes.
(b) Find μ. (Enter your answer to two decimal places.) μ = syringes What is the expected number of defective syringes the inspector will find? (Enter your answer to two decimal places.) syringes
(c) What is the probability that the batch will be accepted? (Round your answer to three decimal places.) (
d) Find Ï. (Round your answer to three decimal places.) Ï = syringes
a) Histogram (figure attached)
b) The expected number of defective is equal to 0.4 syringes.
c) Probability that the batch will be accepted is equal to 0.94275.
d) The standard deviation is 0.6164.
It is a binomial distribution "DISCRETE probability distribution that encapsulates the likelihood that a value will take one of two independent values when a particular set of conditions is met. The assumptions for the binomial distribution are that each trial has a single possible outcome, each trial has an equal chance of success, and each trial is independent of the others or mutually exclusive ".
Let X be the number of syringes being defective as a binomial random variable.
We are given that in the batch, there can be assumed to be 5% defective syringes.
∴ n = 8
Probability of syringes being defective, p = 0.05
Probability of syringes being not defective , q = 1-p = 1-0.05 = 0.95
a) Histogram (figure attached)
b) We know that the formula for Expectation in binomial distribution is;
μ =n×p = 8×0.05
=0.4 syringes
Therefore, the inspector will find the expected number of defective is equal to 0.4 syringes.
c) We have to find binomial probability for that we will use the binomial probability distribution is given by:
P(X=x) = ⁿCₓpˣ (1-p)^n-x, x = 0,1,2,3 ..8
Therefore,
P(x<2) = P(X=0) + P(X=1)
= ⁸C₀(0.05)⁰(1-0.05)⁸ + ⁸C₁(0.05)¹(1-0.05)⁷
= 0.66342 + 8×0.05×0.6983
= 0.66342 + 0.27933
= 0.94275
Therefore, probability that the batch will be accepted is equal to 0.94275.
d) We first find the variance:
σ² = Var(X) = n×p×(1-p)
= 8 × 0.05 ×(1-0.05)
= 0.38
Thus, the standard deviation is
σ = [tex]\sqrt{0.38}[/tex] = 0.6164
Thus,
a) Histogram (figure attached)
b) The expected number of defective is equal to 0.4 syringes.
c) Probability that the batch will be accepted is equal to 0.94275.
d) The standard deviation is 0.6164.
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Which number should come next ➔ 7, 13, 13, 14, 19, 15 ?
(a) 15
(b) 25
(c) 19
(d) None of the
Determine the value of b in the equation b3 = −27.
b = −3
b = 3
b = −9
b = 9
An initial sample of 458 grams of a radioactive substance decays according to the function A(t)=458e^-0.038t. What is the half-life of the substance?
If initial sample of 458 grams of a radioactive substance decays according to the function [tex]A(t)=458e^{-0.038t}[/tex] then the half-life of the substance is 0.
What is half life?Half-life is the time required for a quantity (of substance) to reduce to half of its initial value.
Given,
An initial sample of 458 grams of a radioactive substance decays according to the function
[tex]A(t)=458e^{-0.038t}[/tex]
We need to find the half life
[tex]458=458e^{-0.038t}[/tex]
Divide both sides by 458
[tex]1=e^{-0.038t}[/tex]
Take log on both sides
[tex]log1=-0.038t[/tex]
0=-0.038t
t=0
Hence, the half-life of the substance is 0.
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A local ice cream shop sold a scoop for $2 the first year they opened and had 1000 customers each day. The price for ice cream increases by 10 cents each year because times are tough. However, 10 fewer people buy ice cream each year. Create a revenue equation. What price should they sell the ice cream to maximize the daily profit?
The answer is $6, but I want an explanation as to why
To be profitable and ensure your finances are healthy, look at both your total revenue as well as your net revenue.
What drives our total revenue calculation?A simple way to solve for revenue is by multiplying the number of sales and the sales price or average service price (Revenue = Sales x Average Price of Service or Sales Price).With that being said, not all revenues are equal.Total Revenue = Number of Units Sold X Cost Per UnitTotal Sales X Cost Per Unit equals Total RevenueThe total revenue equation can be used to determine revenue for both goods and services.Think "quantity times price" to help yourself remember.To learn more about total revenue calculation refer to:
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Solve the following equation below. Show each step and check your work. 87 + 87 y = 1218 + 174
The value of y is 15.
What is 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. LHS = RHS is a common mathematical formula.
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:
87 + 87 y = 1218 + 174
Now, Solving
87+ 87y= 1392
87y= 1392- 87
87y= 1305
y= 1305/ 87
y= 15
Hence, the value of y is 15.
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A yoga teacher sells yoga mats for $25 each and yoga DVDs for $14
each. If x represents the number of mats she sells and y represents
the number of DVDs she sells, write an expression that represents
the amount of money she receives from selling mats and DVDs. Tell
whether the expression should be minimized or maximized.
The required expression for the money spent is given as 25x + 14y.
What is an Algebraic expression?An algebraic expression can be obtained by doing mathematical operations on the variable and constant terms.
The variable part of an algebraic expression can never be added or subtracted from the constant part.
The given problem can be solved as follows,
The price for each yoga mat is $25 and each yoga DVD is $14.
As per the question, the expression for the amount of money spent can be written as,
25x + 14y
The expression can be minimised to reduced the money spent.
Hence, the expression for the money spent by yoga teacher is 25x + 14y and the given expression can be minimised to reduce the total cost.
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How to subtract fractions with different denominators?
Please explain step by step!
How do I find x?
Please help me, I tried everything :(
Answer:
70
Step-by-step explanation:
I believe that since these are complementary angles, you are supposed to add two to get 180. In this case, there is a 110, so 70 more would be 180, but i could be wrong. you can delete my answer if it is wrong :(
A sum of money was given to Arin, Greg, and James, the ratio is 2:5:7. James received $1180 more than Arin. How much total money was shared?
The total money was shared = $3304
What are proportion and ratio?
Two quantities are compared to form a ratio. An equality of two ratios is a proportion. How to format a ratio Analyze the ratio to see whether it is part to part or part to whole. Calculate the whole and the pieces as necessary.
Aaron, Ben, and Charles split a sum of money in the following proportions: 2: 5: 7. What was the initial amount of money shared if Charles' part was 1180 higher than Aaron's portion?
——-
Ben:::: 5x
Charles:7x
Aaron:2x
———-
7x = 2x + 1180 in the equation
5x = 1180
x = 236
————-
2x + 5x + 7x = 14x
14x = 14*236 = $3304
—————————————
Hence the total money was shared = $3304
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Question 1
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A pharmacy technician receives the following prescription:Hydrocortisone 2.5% cream
and Aquaphor in 1:1 Quantity: 4 oz total. What quantity of hydrocortisone powder, in g.
should be entered on the compounding record?
The quantity of hydrocortisone powder, in g, should be entered on the compounding record as 56.7 g
What quantity of hydrocortisone powder, in g should be entered on the compounding record?Generally, To determine the quantity of hydrocortisone powder to be used in the compounding of this prescription, you will need to know the percentage of the final preparation that will be made up of hydrocortisone.
Since the prescription calls for a 1:1 mixture of hydrocortisone cream and Aquaphor, and the final quantity is to be 4 oz, each component will make up half of the final preparation. Therefore, the final preparation will be 50% hydrocortisone.
To determine the quantity of hydrocortisone powder needed, you will need to multiply the final desired quantity of the preparation by the percentage of the preparation that is made up of hydrocortisone. In this case, the desired final quantity is 4 oz, and the preparation is 50% hydrocortisone, so the calculation is:
4 oz * 50% = 2 oz
Since there are 28.35 grams in an ounce, the total quantity of hydrocortisone powder needed in grams is:
2 oz * 28.35 g/oz = 56.7 g
Therefore, you should enter a quantity of 56.7 g of hydrocortisone powder on the compounding record for this prescription.
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Preston bought a
drum set priced at $187.90. The sales tax
was found by multiplying the price of the
drum set by 0.08. What was the total cost
of the drum set with sales tax? Round to
the nearest cent.
(Show All Work)
Find the solution set of the inequality < 25.
Why is (x:x<5} not the solution set of x² < 25?
I will mark as brainest please help
We can substitute the number in the inequality to find if the inequality holds true. If the inequality holds true, it is a valid solution. This is very similar to substituting a number in an equation, in order to check if it holds.
The same holds true for others.
What is 8.7% of $1,541
Answer:
137.067
Step-by-step explanation:
1 percent = 15.41
0.1 percent = 1.541
8 x 15.41 = 123.28
7 x 1.541 = 10.787
123.28 + 10.787 = 137.067
There are 11 books stacked on a shelf. The red books are 1 inch high and the blue books are 2 inches high. The height of the books is 14 inches. Use a graph to estimate the number of red books and the number of blue books on the shelf.
Red books are 8 and blue books are 6.
What is inches?The smallest unit of measurement is the inch (or inches, in plural). A foot is made up of twelve inches. In the metric system, one inch is equivalent to 2.54 cm. When measuring shorter distances, such the breadth of an eraser or the length of a pencil, inches are employed.
Give conditions
Total books = 11
Red book height = 1 inches
Blue book height = 2 inches
Total height = 14 inches
We assume that
8 red books and 3 blue books = 11 books { first condition is satisfied}
In inches case:
8 * 1 = 8 { red book height 1 inches}
3 * 2 = 6 {blue book height 2 inches}
total height = 8 +6 = 14 inches {second condition is satisfied}
since red books are 8 and blue books are 6.
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1. Which of these numbers can be classified as both real and irrational?
5.858585858
63.4
√21
√36
Answer:
sqrt21 is real and irrational
Step-by-step explanation:
The other answers are a repeating decimal (rational), a terminating decimal (rational) and a perfect square (an integer--so also rational)
They are all real. Numbers that are not real have the imaginary number, i, in them or a square root of a negative number.
Consider the sets below. Find B^c ∩ C
Answer:
{red, orange , yellow}
Step-by-step explanation:
pls rate as brainliest I need to move to the next rank
angles x and y are supplementary angle x measures 116.89 and angle y measures (m-10) find m Y
If the measure of the angle x is 116.89 degrees. Then the measure of the angle y will be 63.11 degrees.
What is an angle?The inclination is the separation seen between planes or vectors that meet. Degrees are another way to indicate the slope. For a full rotation, the angle is 360 °.
Supplementary angle - Two angles are said to be supplementary angles if their sum is 180 degrees.
It is given that the angles x and y are supplementary angles. Then the equation is given as,
x + y = 180
If the measure of the angle x is 116.89 degrees. Then the measure of the angle y is calculated as,
x + y = 180
116.89 + y = 180
y = 180 - 116.89
y = 63.11 degrees
If the measure of the angle x is 116.89 degrees. Then the measure of the angle y will be 63.11 degrees.
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Identify the vertex, axis of symmetry, and the direction of opening of the graph of g(x) = |x| − 8. A. (0, −8); y = −8; opens up B. (0, −8); x = 0; opens up C. (8, 0); x = 0; opens down D. (−8, 0); x = −8; opens down
The vertex of the absolute function g(x) will be (0, -8). And the function opens up. Then the correct option is A.
What is an absolute function?The absolute function is also known as the mode function. The value of the absolute function is always positive.
If the vertex of the absolute function is at (h, k). Then the absolute function is given as
f(x) = | x - h| + k
The absolute function is given below.
g(x) = | x | - 8
Compare the function g(x) with the function f(x), then the vertex of the absolute function is as,
(h, k) = (0, -8)
The absolute function opens up because there is a positive sign before mode.
The vertex of the absolute function g(x) will be (0, -8). And the function opens up. Then the correct option is A.
The graph is given below.
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Here are four equations of absolute value functions and three coordinate pairs.
A. p(x)=[x-9] B. q(x)= [x]+9
Match the equation of each function with the coordinates of the vertex of its graph 1. (-9, 0 2. (9, 0) 3.(0, -9)
A) The vertex (h, k)=(9, 0) if p(x)=[x-9]
B) The vertex (h, k)=(0, 9) if q(x)= [x]+9
What is meant by a function?The earliest known treatment of the idea of function can be found in the writings of the Persian mathematicians Al-Biruni and Sharaf al-Din al-Tusi. Functions were originally merely a simplified illustration of the relationship between two varying quantities. The position of a planet is just one example of how time is used. The concept was historically developed towards the end of the 17th century with infinitesimal calculus, and the functions that were taken into consideration up until the 19th century. The concept of a function was formalised in terms of set theory at the end of the 19th century, greatly extending its range of applications.
Given,
A) p(x)=[x-9]
We have to compare with f(x)=a|x-h|+k
Therefore, the vertex (h, k)=(9, 0)
B) Given,
q(x)= [x]+9
We have to compare with the above equation we get,
The vertex (h, k)=(0, 9)
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The midpoint of GH is M(-6,-3). One endpoint is H (-4,4). Find the coordinates of endpoint G
When the midpoint of GH is M at (-6,-3) and one endpoint is H at (-8,-10), the coordinates of endpoint G are (-8,-10) (-4,4).
What is coordinates?A pair of numbers that use the horizontal and vertical separations from the two reference axes to define a point's location on a coordinate plane. typically expressed by the x-value and y-value pair (x,y). a group of variables that accurately depict a stance. The first number on a graph represents the distance along, while the second number represents the distance up or down. For instance, the point (12,5) is located 12 units down and 5 units up.
Here,
let the points of G be (a,b)
mid point of GH =(-6,-3)
point of H =(-4,4)
for x coordinate,
-6=(a-4)/2
a-4 =-12
a=-8
for y coordinate,
-3=(b+4)/2
-6=b+4
b=-10
The coordinates of endpoint G is (-8,-10) when the midpoint of GH is M at (-6,-3) and one endpoint is H at (-4,4).
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stephanie is ordering a pizza for a friends birthday. she wants to offer both meat and vegetarian options. a pepperoni pizza costs $8.00 and the vegetarian pizza costs $13.00. stephanie has $90 to spend on pizza and she wants to have at least 4 pizzas.
Part A: Create a system of inequalities to represent this situation where x represents the number of pepperoni pizzas and y represents the number of vegetarian pizzas she could order.
Part B: Give an example of one solution that would describe how many of each pizza she could buy.
Part A. The system of inequalities to this context is x + y ≥ 4 and
8x + 13y ≤ 90.
Part B. An example of one solution is (x, y) is (4, 4), where she buys 4 pizzas of each type which satisfies x + y ≥ 4.
What are inequalities and their types?Inequality is a relation that compares two numbers or other mathematical expressions in an unequal way.
The symbol a < b indicates that a is smaller than b.
When a > b is used, it indicates that a is bigger than b.
a is less than or equal to b when a notation like a ≤ b.
a is bigger or equal value of an is indicated by the notation a ≥ b.
From the given information 'x' represents the number of pepperoni pizzas and 'y' represents the number of vegetarian pizzas.
Given, She wants to have at least 4 pizzas which is,
x + y ≥ 4...(1)
Also given that a pepperoni pizza costs $8.00 and a vegetarian pizza costs $13.00 and she has $90 to spend.
Therefore, 8x + 13y ≤ 90...(2)
An example of a solution is (x, y) ⇒ (4, 4) where she buys 4 pepperoni pizzas and 4 vegetarian pizzas.
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Question 12
Solve -3 + m2 9 or 1+ 2m 19. Write the solution using set-builder notation.
The solution to the linear inequality written in set-builder notation is {m | m ∈ R and m ≥ 12 or m ≤ 9}
Solving Linear inequalitiesFrom the question, we are to solve the given linear inequality.
The given linear inequality is
-3 + m ≥ 9 OR 1 + 2m ≤ 19
Solving -3 + m ≥ 9
-3 + m ≥ 9
Add 3 to both sides of the equation
-3 + 3 + m ≥ 9 + 3
m ≥ 12
Solving 1 + 2m ≤ 19
1 + 2m ≤ 19
Subtract 1 from both sides of the equation
1 - 1 + 2m ≤ 19 - 1
2m ≤ 18
Divide both sides by 2
2m/2 ≤ 18/2
m ≤ 9
Thus,
m ≥ 12 OR m ≤ 9
In set-builder notation
{m | m ∈ R and m ≥ 12 or m ≤ 9}
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a party rental company has chairs and tables to rent. there were two customers who rented both chairs and tables last week
A system of equations are 9x+7y=77 and 3x+5y=49. Therefore, cost to rent each chair is $1.75 and cost to rent each table is $8.75.
What is a linear system of equations?A system of linear equations consists of two or more equations made up of two or more variables such that all equations in the system are considered simultaneously. The solution to a system of linear equations in two variables is any ordered pair that satisfies each equation independently.
a) From the table, first costumer brought 9 chairs and 7 tables per $77
Second costumer brought 3 chairs and 5 tables per $49
Let x be the cost (in dollars) to rent a chair
Let y be the cost (in dollars) to rent a table
Here, 9x+7y=77 --------(I)
3x+5y=49 --------(II)
b) Multiply equation (II) by 3
9x+15y=147 --------(III)
Subtract equation (I) from (III), we get
9x+15y-(9x+7y)=147-77
⇒ 8y=70
⇒ y=8.75
Substitute y=8.75 in (I), we get
9x+7×8.75=77
⇒ 9x+61.25=77
⇒ 9x=77-61.25
⇒ 9x=15.75
⇒ x=1.75
Therefore, the system of linear equations are 9x+7y=77 and 3x+5y=49.
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STATISTICS HOMEWORK HELP !! Please attach a photo of the homework problems solved in the comments. Or if you can't post a photo then please just do your best to explain the answers in text.
The required solution for the hypothesis testing is shown,
The T - statistic is the ratio of the predictive value of a parameter from its hypothesized value to its standard disputable values.
n = 16, ss = 960, and [tex]\bar x = 55,[/tex]
[tex]S.D, s = \sqrt{ \ [ss/n - 1]\\s = \sqrt{960/15} \\s = 8[/tex]
The test statistic is,
[tex]t = \bar x - mu / [s /\sqrt{n} ]\\t = 55 - 50 / [8/\sqrt{16} ]\\t = 2.5[/tex]
df = n - 1 = 15 , let α = 0.05
tcrp = 2.131 [from t - table]
Since t > 2.131
The result is significant
(b)
Cohen's d = mean difference /SD
= 55 - 50 / 8 = 0625.
Thus, the required solution for the hypothesis testing is shown,
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