The probability that a chi-square distributed random variable with 13 degrees of freedom takes on a value between 5.009 and 15.984 is 0.9332. This can be found using the chi-square table. The value of f(0.99;27,12) is 0.209. This can be found using the cumulative distribution function of the chi-square distribution.
The chi-square distribution is a probability distribution that arises from the sum of squared standard normal variables. It is often used in hypothesis testing to determine whether the variance of a population is significantly different from a known value.
The chi-square table shows the probability that a chi-square distributed random variable with a certain number of degrees of freedom will take on a value less than or equal to a certain value. To find the probability that a chi-square distributed random variable with 13 degrees of freedom takes on a value between 5.009 and 15.984, we can look up these values in the chi-square table. The table shows that the probability that a chi-square distributed random variable with 13 degrees of freedom takes on a value less than or equal to 5.009 is 0.9332. The table also shows that the probability that a chi-square distributed random variable with 13 degrees of freedom takes on a value less than or equal to 15.984 is 0.9970. Therefore, the probability that a chi-square distributed random variable with 13 degrees of freedom takes on a value between 5.009 and 15.984 is 0.9970 - 0.9332 = 0.0638.
The cumulative distribution function of the chi-square distribution shows the probability that a chi-square distributed random variable with a certain number of degrees of freedom will take on a value less than or equal to a certain value. To find the value of f(0.99;27,12), we can look up 0.99 in the cumulative distribution function of the chi-square distribution with 27 degrees of freedom. The table shows that f(0.99;27,12) = 0.209.
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Find the GCF for 40 and 48 *
can someone help me im doing it the venn diagram way for my test plssssss
Answer:
8
Step-by-step explanation:
Plz help I don’t wanna fail it’s not much!!!!!
Answer:
40 feet
Step-by-step explanation:
24^2+32^2=x^2
solve for x
x=40 feet
Select the correct answer. rational functions v and w both have a point of discontinuity at x = 7. which equation could represent function w? a. w(x) = v(x − 7) b. w(x) = v(x 7) c. w(x) = v(x − 7) 7 d. w(x) = v(x) 7
The following equation could be used to represent a function w:
= w(x)=v(x-7)+7
According to the information provided,
The point of discontinuity of rational functions is at x=7.
When a rational function has a point of discontinuity, it generally occurs when,
q(x) = r(x-a), where x = a
In this case, we must pay attention to the following relationship, which is a combination of a parent rational function and a vertical translation:, (2)
If we know that a=7 and k=7.
The equation which can represent w is as follows,
w(x) = v ( x-7 ) + 7
A rational function can be represented as a polynomial split by another polynomial. Because polynomials are defined everywhere, the domain of a rational function is the set of all numbers except the zeros in the denominator.
Example: x = f(x) (x - 3). The denominator, x = 3, has only one zero. Rational functions are no longer defined when the denominator is zero.
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Which of the following statements best describes a survey question?
A question you will ask the people in your sample.
A question designed to collect a single datum.
A multiple choice question.
A question designed to obtain customer feedback.
Answer:
A question you will ask the people in your sample.
Caroline took a simple interest loan for 8 years. She deposited $2950 and at the end of the loan she owed a total of $4177.20. How much was the interest rate?
Answer:
caroline had a heart attack
Step-by-step explanation:
after reading this THING
no offence
Question
Select the graph with the final image of ABC after the given sequence of transformations. Rotate ABC
90° clockwise about the origin and then reflected over the x-axis.
Answer:
The answer is graph D
Step-by-step explanation:
Starting at trigangle ABC apply a 90-degree rotation. This puts the triangle in quadrant 1 (Q1/the top right). So this leaves you with graphs A,C or D left. The eaiest way to see the orientation of the shape wuold be to turn the page 90-degrees clockwise.
Then staring from the triangle in Q1 reflect over the x-axis. This is the tranformation of the image folded over the horizontal axis. So it would place the triangle into quandant 4 (Q4/ bottom right) and would give the answer as graph D.
Learning Task 1: Show the following decimals using grids. Write your
answer in your notebook.
1) 0. 9 2) 0. 1 3) 0. 24 4) 0. 21 50. 11 6) 0. 15
The following values are: 1) 9/10, 2) 1/10, 3) 24/100, 4) 21/100, 5) 1/10, 6) 15/100
There are a few steps for writing decimals in grids:
Step 1: Count how many grids are completely shaded. This will be the number for your one digit.
Step 2: In the grid that is partially shaded, count how many parts are shaded and how many total parts there are.
If the grid has 10 total parts, the number of shaded parts will be your tenth digit.
If the grid has 100 total parts, the number of shaded parts will end in the hundredth place.
Step 3: Combine your numbers from steps 1 and 2 to create the decimal that the grids represent.
As per the steps now we can calculate the decimal numbers:
0.9/100=0.9/10
0.1/100=1/10
0.24/1000=24/100
0.21/1000=21/100
0.15/1000=15/100.
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which is the smallest measurement used in the apothecary system for volume? a. apothecary b. metric c. minim d. household.
The smallest measurement used in the apothecary system for volume is the minim.
The apothecary system is an outdated system of measurements primarily used in pharmacy and medicine. It includes various units for measuring volume, weight, and other quantities.
In the apothecary system, the minim is the smallest unit of measurement for volume. It is equivalent to approximately 0.0616 milliliters.
The minim is a small unit of measurement and is typically used for precise dosing of liquids in the apothecary system. It is commonly used in pharmaceutical compounding and in the preparation of medications.
However, it's important to note that the apothecary system is no longer widely used in modern healthcare practices. The metric system, with units such as milliliters and liters, has become the standard for measuring volume in most countries.
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a(n) ____ is a mathematical representation of an object created by a special software
A(n) MODEL is a mathematical representation of an object created by a special software.
In computer science, a model is a mathematical abstraction of a system, process, or phenomenon that is intended to be simulated or executed on a computer system. A model is used to represent a system or process as a set of mathematical equations or logical rules in order to simulate or analyze it with a computer program.
It can be a physical object, such as a car or building, or an abstract concept, such as an economic system or a social network. In general, a model can be a simple or complex representation of a real-world object or process, and it can be used for a variety of purposes, such as predicting future outcomes, testing hypotheses, or designing new systems.
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The cost of shirts is $12.90 each if 1,000 shirts are purchased. Harry sells 800 shirts before the football season begins at a 50% markup based on cost. What is the gross margin (markup) if Harry sells the remaining
200 shirts at a 30% reduction from the selling price?
Harry will have a gross margin of $5,290.
If the cost of each shirt is $12.90 and 1,000 shirts are purchased, then the total cost of 1,000 shirts is:
$12.90 x 1,000 = $12,900
If Harry sells 800 shirts at a 50% markup, then he sells them for:
$12.90 x 1.5 = $19.35
Harry sells the 200 remaining shirts at a 30% reduction from the selling price:
$19.35 x 0.7 = $13.55
The gross margin (markup) is the difference between the selling price and the cost per shirt. For the 800 shirts sold at a markup, the gross margin per shirt is:
$19.35 - $12.90 = $6.45
So the gross margin for the 800 shirts is:
$6.45 x 800 = $5,160
For the 200 shirts sold at a discount, the gross margin per shirt is:
$13.55 - $12.90 = $0.65
So the gross margin for the 200 shirts is:
$0.65 x 200 = $130
Therefore, the total gross margin for all 1,000 shirts is:
$5,160 + $130 = $5,290
Harry will have a gross margin of $5,290.
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A storage container leaks water at a rate of 15 gallons every 30 days. What is the unit rate in gallons per week?
Enter your answer as a mixed number in simplest form in the box.
gal/week
Answer:
Sorry for being late it is 3.5 Or In a mixed Fraction 3\(\frac{1}{2}\)
Step-by-step explanation:
I took the test Hope this helps :D
20 people calls for 32 fluid ounces of pineapple juice and 48 ounces of orange juice. Monique only has 20 ounces of pineapple juice. How much orange juice does she need to maintain the ratio of pineapple to orange juice? Monique would need Question Blank 1 of 1 type your answer... ounces of orange juice to maintain the ratio of pineapple to orange juice.
Monique needs 30 ounce orange juice with the 20 ounce pineapple juice to maintain the ratio of pineapple juice.
How much quantity of orange juice does Monique need to maintain the ratio of pineapple to orange juice?
Given that,
Quantity of pineapple juice by 20 people = 32 ounces
Quantity of orange juice by 20 people = 48 ounces
Consider the quantity Monique needs = x
Therefore, their ratio is as follow
⇒ 20/x = 32/48
⇒ 20/x = 2/3
⇒ x=60/2
⇒ x=30
Hence Monique needs 30 ounce orange juice with the 20 ounce pineapple juice to maintain the ratio of pineapple juice.
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For every 1000 hits a You Tube channel gets it makes £40 from ad revenue. How many hits will the You Tube channel need to make £1?
Answer:
25 hits
Step-by-step explanation:
you would divide 1000 by 40 and get 25
Find the length of each missing side and each missing angle in the isosceles triangle below.
Answer:
x = 45
y = 45
z = 11.1
Step-by-step explanation:
Remark
The triangle is a right triangle. That means that it has 1 right angle.
It is also isosceles which means that the two legs that are not the hypotenuse are equal.
Result: z and 11.1 are equal z = 11.1
More remark
If the triangle is isosceles, that means that the angles that are not right angles must also be equal.
90 + x + y = 180
but x = y
90 + 2x = 180 Subtract 90
2x = 180 - 90 Divide by 2
2x/2 = 90/2
x = 45
Explain how to use what you know about whole number division to check your work when you divide with fractions. Use atleast three terms from the Word List in your explanation
Word List:
Dividend
Divisor
Factor
Inverse operations
Product
Quotient
Unit fraction.
To check your work when dividing with fractions, convert the division to multiplication by using inverse operations. Multiply the dividend by the reciprocal of the divisor to find the product. Simplify and compare the quotient. If correct, the product and quotient will match.
When dividing with fractions, you can use your knowledge of whole number division to check your work. Here's how you can do it:
Identify the dividend, which is the number being divided, and the divisor, which is the number you are dividing by.
Convert the fractions into improper fractions if needed, by finding the product of the whole number and the denominator, and then adding the numerator.
Use inverse operations to change the division into multiplication. Instead of dividing by a fraction, multiply by its reciprocal (the divisor becomes the reciprocal or inverse of the fraction). This is similar to how in whole number division, you multiply by the reciprocal of the divisor.
Multiply the dividend by the reciprocal of the divisor (or the inverse fraction). This will give you the product.
Simplify the product if necessary and express it as a fraction in its simplest form.
Compare the quotient you obtained with your original division. They should be equal. If they are not, you may have made an error in your division calculation.
By using these steps and your understanding of whole number division, you can check your work when dividing with fractions. It allows you to verify that the quotient obtained through fraction division matches the result you would obtain using whole number division principles.
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use set notation and cylindrical coordinates as in the equation f = {(r, , z) | 0 ≤ r ≤ 2, 0 ≤ ≤ 2, r2 ≤ z ≤ 8 − r2} to describe the region.
The region described by the equation f = {(r, θ, z) | 0 ≤ r ≤ 2, 0 ≤ θ ≤ 2π, r^2 ≤ z ≤ 8 - r^2} can be visualized as a cylindrical volume with specific constraints on the radius, angle, and height.
The given equation f = {(r, θ, z) | 0 ≤ r ≤ 2, 0 ≤ θ ≤ 2π, r^2 ≤ z ≤ 8 - r^2} represents a region in three-dimensional space. Let's describe this region using set notation and cylindrical coordinates.
In set notation, we can represent the region as:
f = {(r, θ, z) : 0 ≤ r ≤ 2, 0 ≤ θ ≤ 2π, r^2 ≤ z ≤ 8 - r^2}
This notation indicates that the set f consists of all points (r, θ, z) such that the conditions 0 ≤ r ≤ 2, 0 ≤ θ ≤ 2π, and r^2 ≤ z ≤ 8 - r^2 are satisfied.
In cylindrical coordinates, we can describe the region as follows:
0 ≤ r ≤ 2 - This represents the radius or distance from the z-axis. The values of r range from 0 to 2.
0 ≤ θ ≤ 2π - This represents the angle or rotation around the z-axis. The values of θ range from 0 to 2π, covering a full revolution.
r^2 ≤ z ≤ 8 - r^2 - This represents the height or distance along the z-axis. The values of z depend on the value of r. For each value of r, z ranges from r^2 to 8 - r^2.
Combining these conditions, we can describe the region as a cylindrical shape bounded by the circular base with radius 2, extending along the z-axis from r^2 to 8 - r^2, and covering a full revolution around the z-axis.
Overall, the region described by the equation f = {(r, θ, z) | 0 ≤ r ≤ 2, 0 ≤ θ ≤ 2π, r^2 ≤ z ≤ 8 - r^2} can be visualized as a cylindrical volume with specific constraints on the radius, angle, and height.
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Need help fast I really need it
Answer:
43in [squared]
Step-by-step explanation:
i counted and theres more than 40 so
Answer: D
Step-by-step explanation:
Someone please help me with this
9. Triangles ACD and BCD are isosceles. Angle DBC has a measure of 110 degrees and angle BDA has a measure of 22 degrees. Find the measure of angle BAC.
In an isosceles triangle, if Angle DBC has a measure of 110 degrees and angle BDA has a measure of 22 degrees, then the measure of angle BAC is 48 degrees.
What is an isosceles triangle?A triangle with two equivalent sides and angles with equal measures on opposing sides is said to be isosceles.
Triangle BAC's angles should be labelled as follows:
Angle BAC = x
Angle ABC = y
Angle BCA = z
Because a triangle's angles sum up to 180 degrees,
x + y + z = 180
As ACD and BCD are isosceles triangles,
angle DBC = angle DCB = 110 degrees
Because BDA and DBC are a pair of linear angles,
angle BDA + angle DBC = 180 degrees
Using values for angles DBC and BDA and substituting them,
22 + 110 = 180
By finding y,
y = 180 - 22 - 110
When the value of y is substituted in the equation x + y + z = 180,
x + (180 - 22 - 110) + z = 180
Solving for x,
x = 180 - (180 - 22 - 110) - z
Substituting the value of z = 180 - (22 + 110),
x = 180 - (180 - 22 - 110) - (180 - 22 - 110)
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12. Determine the slope of the tangent to the curve y=2sinx + sin’x when x = a) b) 0 c) 323 5 d) 3+2/3 4 2
To determine the slope of the tangent to the curve y = 2sin(x) + sin'(x) at various points, we need to differentiate the given function.
The derivative of y with respect to x is:
y' = 2cos(x) + cos'(x)
Now, let's evaluate the slope of the tangent at the given points:
a) When x = 0: Substitute x = 0 into y' to find the slope.
b) When x = 3/4: Substitute x = 3/4 into y' to find the slope.
c) When x = 323.5: Substitute x = 323.5 into y' to find the slope.
d) When x = 3+2/3: Substitute x = 3+2/3 into y' to find the slope.
By substituting the respective values of x into y', we can calculate the slopes of the tangents at the given points.
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Prove, using the definition of the derivative, that if f(x) = cos (x), then f'(x) = -sinx.
The derivative of a function represents the rate of change of the function with respect to its variable. This rate of change is described as the slope of the tangent line to the curve of the function at a specific point. The derivative of the cosine function can be found by applying the limit definition of the derivative to the cosine function.
\(f(x) = cos(x) then f'(x) = -sin(x)\).
Let's proceed with the proof. Definition of the Derivative: The derivative of a function f(x) at x is defined as the limit as h approaches zero of the difference quotient \(f(x + h) - f(x) / h\) if this limit exists. Using this definition, we can find the derivative of the cosine function as follows:
\(f(x) = cos(x) f(x + h) = cos(x + h)\)
Now, we can substitute these expressions into the difference quotient: \(f'(x) = lim h→0 [cos(x + h) - cos(x)] / h\)
We can then simplify the expression by using the trigonometric identity for the difference of two angles:
\(cos(a - b) = cos(a)cos(b) + sin(a)sin(b)\)
Applying this identity to the numerator of the difference quotient, we obtain:
\(f'(x) = lim h→0 [cos(x)cos(h) - sin(x)sin(h) - cos(x)] / h\)
We can then factor out a cos(x) term from the numerator:
\(f'(x) = lim h→0 [cos(x)(cos(h) - 1) - sin(x)sin(h)] / h\)
We can then apply the limit laws to separate the limit into two limits:
\(f'(x) = lim h→0 cos(x) [lim h→0 (cos(h) - 1) / h] - lim h→0 sin(x) [lim h→0 sin(h) / h]\)
The first limit can be evaluated using L'Hopital's rule:
\(lim h→0 (cos(h) - 1) / h = lim h→0 -sin(h) / 1 = 0\)
Therefore, the first limit becomes zero:
\(f'(x) = lim h→0 - sin(x) [lim h→0 sin(h) / h]\)
Applying L'Hopital's rule to the second limit, we obtain:
\(lim h→0 sin(h) / h = lim h→0 cos(h) / 1 = 1\)
Therefore, the second limit becomes 1:
\(f'(x) = -sin(x)\)
Thus, we have proved that if \(f(x) = cos(x), then f'(x) = -sin(x)\).
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according to the chart, approximately how many times more likely is a 16-year-old driver to crash with two passengers as opposed to with no passengers?
About twice as likely is a 16-year-old driver to crash with two passengers as opposed to with no passengers.A 16 or 17-year-old driver has a higher risk of dying every mile they drive compared to operating a vehicle alone. increases by 44% when one of the passengers is under the age of 21. while transporting two passengers who are under 21 in doubles.
Are 16 year olds more likely to crash?Teenagers between the ages of 16 and 19 had the highest crash risk of any age group. Teen drivers in this age range have a roughly three times higher risk of being in a fatal collision per mile traveled than drivers who are at least 20 years old.According to CDC research, there are a few main factors that increase the likelihood of young drivers being in auto accidents: insufficient experience Due in part to their inability to identify and avoid road dangers, teen drivers have a fatal crash risk that is three times higher than that of older drivers.To learn more about crash with two passengers refer to:
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16-year-old driver to crash with two passengers as opposed to with no passengers is about twice as likely.
Are 16 year old's more likely to crash?Teenagers between the ages of 16 and 19 had the highest crash risk of any age group. Teen drivers in this age range have a roughly three times higher risk of being in a fatal collision per mile traveled than drivers who are at least 20 years old.According to CDC research, there are a few main factors that increase the likelihood of young drivers being in auto accidents: insufficient experience Due in part to their inability to identify and avoid road dangers, teen drivers have a fatal crash risk that is three times higher than that of older drivers.The complete question is,
According to the chart, approximately how many times more likely is a 16-year-old driver to crash with two passengers as opposed to with no passengers?
just as likely
about twice as likely
about three times more likely
about four times more likely
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if 11 is subratecet from 4 times a number the result is 89 find the number
Answer:
25
Step-by-step explanation:
Answer:
25
Step-by-step explanation:
4x-11=89
4x=89+11
4x=100
x= 25
I hope this will help
I need to find X AND Y HELPPP
The values of variables in the kite is - x = 35°, y = 12.5°. The angles measures of the kite are ∠a = 110°, ∠b = 12.5°, ∠c = 5° and ∠d = 110°.
What is a kite?
A kite is a quadrilateral having reflection symmetry across a diagonal in Euclidean geometry. A kite has two equal angles and two pairs of adjacent equal-length sides as a result of its symmetry. Another name for kites is deltoids.
The given angles of the kite are -
∠a = (3x+5)°
∠b = y°
∠c = (2y-20)°
∠d = (4x-30)°
According to the properties of kite -
The two angles are equal where the unequal sides meet.
So, ∠a = ∠d
(3x+5)° = (4x-30)°
3x - 4x = -30 - 5
-x = -35
x = 35°
Substituting to find the value of ∠a -
∠a = (3x+5)°
∠a = [3(35)+5]°
∠a = (105+5)°
∠a = 110°
Substituting to find the value of ∠d -
∠d = (4x-30)°
∠d = [4(35)-30]°
∠d = (140-30)°
∠d = 110°
According to the properties of the kite ∠ADC = 90°.
So, ∠c = 90°/2 as line BD is a bisector.
(2y-20)° = 90°/2
2(2y-20)° = 90°
(4y - 40)° = 90°
4y = 90° - 40°
4y = 50°
y = 12.5°
Substituting to find the value of ∠b -
∠b = y°
∠b = 12.5°
Substituting to find the value of ∠c -
∠c = (2y-20)°
∠c = [2(12.5)-20]°
∠c = (25-20)°
∠c = 5°
Therefore, the value of angles are ∠a = 110°, ∠b = 12.5°, ∠c = 5° and ∠d = 110°.
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A and B are two events. Let P(A)=0.45, P(B)=0.2, and P(A and B)=0.65 Are the events are independent?
Answer:
\(P(A ) \times P( B) = 0.45 \times 0.2 \\ = 0.09\)
They are not independent
What is the standard deviation for the set of data { 6,7,8,9,10}? Find the standard deviation by completing the table.
Standard deviation for the given set of data { 6,7,8,9,10} is equal to √2.
As given in the question,
Given set of data is equal to :
{ 6,7,8,9,10}
\(x_{i}\) = { 6,7,8,9,10}
Here total number of observation 'N' is equal to 5.
Mean \(\bar{x}\) = ∑x / n
= ( 6+ 7+ 8 + 9 + 10 ) / 5
= 40 /5
= 8
\(\sum (x_{i} -\bar{x})^{2}\) = ( 6- 8)² + (7-8)² + (8 - 8)²+ ( 9 -8)² + (10 - 8)²
= 4 + 1+ 0 + 1+ 4
= 10
Standard deviation = \(\sqrt{ \frac{\sum (x_{i} -\bar{x})^{2}}{N}\)
= √10/5
= √2
Therefore, standard deviation for the given set of data { 6,7,8,9,10} is equal to √2.
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Which is equivalent to 2^5?
Answer:
Are there certain options?
Step-by-step explanation:
2^5 is in other words 2x2x2x2x2
the answer to this is 32
Hope I helped?
Answer:
32
Step-by-step explanation:
What is 0900 military time?
0900 military time is 9:00 AM in the 24-hour time format used by the military, also known as the 24-hour clock.
The 24-hour clock is a timekeeping system that uses a continuous count of 24 hours, instead of two sets of 12 hours for AM and PM. In this system, each hour of the day is numbered from 0 to 23, and is referred to as "military time" or "24-hour time". So, 0900 military time is equivalent to 9:00 AM, with the "0" indicating the first hour of the day. This system is commonly used in the military, as well as in other fields where precise and standardized timekeeping is important, such as aviation and public transportation.
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Isla has 225 trading cards and Lily has 180 trading cards. a) Calculate the number of Isla's trading cards as a percentage of the number of Lily's trading cards. b) Calculate the number of Lily's trading cards as a percentage of the number of Isla's trading cards. Give your answers to the nearest 1%.
(a) Isla's trading cards are 125% of Lily's trading cards.
(b) Lily's trading cards are 80% of Isla's trading cards.
Given that,
There are 225 trading cards and Lily has 180 trading cards.
To calculate the percentage of Isla's trading cards compared to Lily's,
We can use this formula:
⇒ Isla's trading cards / Lily's trading cards x 100%
Plugging in the values we get:
⇒ (225 / 180) x 100% = 125%
Therefore,
Isla's trading cards are 125% of Lily's trading cards.
b) To calculate the percentage of Lily's trading cards compared to Isla's, we can use the formula:
⇒ Lily's trading cards / Isla's trading cards x 100%
Plugging in the values we get:
(180 / 225) x 100% = 80%
Therefore,
Lily's trading cards are 80% of Isla's trading cards.
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Factor and explain please-
3r2 + 9r- 120
Answer:
3 r 2 +9 r − 120
Step-by-step explanation:
Write the problem as a mathematical expression.
3 r ^2 + 9 r− 120
Factor 3 out of 3 r ^2 + 9 r − 120 .
Factor 3 out of 3 r ^2 .
3 ( r ^2 ) + 9 r − 120
Factor 3 out of 9 r .
3 ( r^ 2 ) + 3( 3 r ) − 120
Factor 3 out of − 120 .
3 r ^2 + 3( 3 r ) + 3 ⋅ − 40
Factor 3 out of 3 r 2 + 3 ( 3 r ) .
3 ( r^2 + 3 r )+ 3 ⋅ − 40
Factor 3 out of 3 ( r 2 + 3 r ) + 3 ⋅ − 40 .
3 ( r^ 2 + 3 r − 40 )
Factor.
Factor r^ 2 + 3 r − 40 using the AC method.
3 ( ( r − 5 ) ( r + 8 ) )
Remove unnecessary parentheses.
3 ( r − 5 ) ( r + 8 )
Hope this helps! :)