According to factor theorem, if f(x) is a polynomial of degree n ≥ 1 and 'a' is any real number, then, (x-a) is a factor of f(x), if f(a)=0.
The factor theorem states
\($(x-a)$ is a factor of $f(x) \Leftrightarrow f(a)=0$\)
f(x)=4 x^3-3 x^2-8 x+4
we have (x-2)\(\Rightarrow a=2\)
& \(f(2)=4 \times 2^3-3 \times 2^2-8 \times 2+4 \\& f(2)=4 \times 8-3 \times 4-16+4 \\& f(2)=32-12-16+4 \\& f(2)=8 \neq 0\end{aligned}\)
\($\therefore x-2$ is not a factor of $4 x^3-3 x^2-8 x+4$\)
however by the remainder theorem when
\($f(x)=4 x^3-3 x^2-8 x+4$\) is divided by \($(x-2)$\) the remainder is 8
the factor theorem being a special case of the remainder theorem
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Answer:
Step-by-step explanation:
Use the factor Theorem to determine whether x =3 is a factor of P (x)=x-2x2-6. Specifically, evaluate P at the proper value, and then determine whether X-3 is a factor. P (UI) - 0 P 0 1 - 3 is a factor of P (*) O +- 3 is not a factor of P (x) This problem has been solved!
please guys correct answers!
Answer:
4t*4t*4t*4t*4t
Step-by-step explanation:
what does they y represent in the equation y=mx+b
Answer:
The y-intercept of this line is the value of y at the point where the line crosses the y axis.
Step-by-step explanation:
The equation of any straight line, called a linear equation, can be written as: y = mx + b, where m is the slope of the line and b is the y-intercept.
can you solve x: 6x+3=9x+21
Answer:
-6
Step-by-step explanation:
6x-9x=21-3
-3x=18
x=-6
At a dance studio, each social dance has a $5 door fee.a. Write a model for the cost C (in $) for door fees to attend x social dances. b. A VIP membership at the studio costs $80 for 3 months, but the foor fee is waived for all social Atdances. How many social dances would be required for a patron to save money by buying the VIP membership?
a.
Given that;
each social dance has a $5 door fee.
Then for x social dances a model for the cost C (in $) is;
\(C=5x\)Cost equals the door fee per social dance multiplied by the number of social dance x.
b.
Given;
VIP membership at the studio costs $80.
So, the number of social dances required to save money to buy the VIP membership can be calculated by substituting C for $80 in the above model;
\(\begin{gathered} C=5x \\ 80=5x \\ x=\frac{80}{5} \\ x=16 \end{gathered}\)Therefore, the number of social dances required to save money to buy the VIP membership is 16;
\(x=16\)
how can you simplify algebraic expressions
Answer:
Algebraic expressions are simplified by using given operators
like as arithmetic
But in algebraic expression there are terms
How to translate a equation to sentence 1/2(f+y)=f-5b
The translation of the statement is: Half the sum of the age of Francis and Yancy equals Francis' age less 5 multiplied by Bella's age
How to translate the equation into a sentence?The equation is given as:
1/2(f + y) = f - 5b
Before translating the equation, we make use of the following representations:
f represents Francis's agey represents Yancy's ageb represents Bella's ageUsing the above representations, we can translate the statement as:
Half the sum of the age of Francis and Yancy equals Francis' age less 5 multiplied by Bella's age
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Use the given numbers.
146,406
364,640
344,636
Part A
Which number has one digit that represents ten times the value of the digit to its right?
Enter your answer in the box.
Answer:
on the third number it says 344,636 and there is a double 4
help convert 2/3 as a decimal.
Answer:
0.666
Step-by-step explanation:
I don't know. i just used a calculator
Which relation is displayed in the graph?
A formula for 6 gallons of light green paint uses 3/8 gallon of white paint. Liam has 9/16 gallon of white paint. Does Liam have enough white paint to make 8 gallons of light green paint? If not, how much more does he need?
If Liam has 9/16 gallon, he has enough white paint to make 8 gallons of light green paint
What is word problem?A word problem in mathematics is a maths question written as one sentence or more that requires the application of mathematics knowledge to a 'real-life' scenario.
Given that 6 gallons of light green paint use 3/8 gallon of white paint, this can be expressed as:
3/8 gallons of white paint = 6 gallons of light green
We are to determine if 9/16 gallons will be enough to make 8 gallons of light green paint. This can be expressed as
9/16 gallons of white paint = x
Divide both expressions
3/8 x 16/9 = 6/x
2/3 = 6/x
By cross multiplying
2x = 3 x 6
2x = 18
x = 18/2
x = 9
This shows that if Liam has 9/16 gallon, he has enough white paint to make 8 gallons of light green paint
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HELP PLEASEEEEEEE!!!!!
The similar shapes EFGH and JKLM have the measurement of angle Z equal to 65°, the length x = 27.5 and the length of y = 12
What are similar shapesSimilar shapes are two or more shapes that have the same shape, but different sizes. In other words, they have the same angles, but their sides are proportional to each other. When two shapes are similar, one can be obtained from the other by uniformly scaling (enlarging or reducing) the shape.
Given that the shape EFGH is a smaller shape of JKLM, and they are similar, then:
the measure of angle Z is equal to 65°
the side EF corresponds to JK and side FG corresponds to KL, so:
8/20 = 11/x
x = (11 × 20)/8 {cross multiplication}
x = 27.5
the side EF corresponds to JK and EH corresponds to JM, so:
8/20 = y/30
y = (30 × 8)/20 {cross multiplication}
y = 12
Therefore, the similar shapes EFGH and JKLM have the measurement of angle Z equal to 65°, the length x = 27.5 and the length of y = 12
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Venessa bought 80 apples for 4$.out of these apples 25 precent were rotten and had to be thrown away Vanessa sold the remaining apples at 6 cents per apple. What is the profit or loss percentage
The loss percentage is 91%.Given that Venessa bought 80 apples for 4$, out of these apples, 25% were rotten and had to be thrown away. Venessa sold the remaining apples at 6 cents per apple.To calculate the profit or loss percentage, we need to determine the cost price, selling price, and the number of apples sold.
Cost price (CP) = 4 $.Selling price (SP) = 80 × 0.75 × 6 cents= 36 cents = 0.36 $.Now, let's calculate the profit.Profit = SP – CP= 0.36 $ – 4 $= – 3.64 $Loss = CP – SP= 4 $ – 0.36 $= 3.64 $.
Therefore, Venessa incurred a loss of $3.64 when she sold 80 apples at 6 cents per apple.Now let's calculate the loss percentage Loss Percentage = (Loss / CP) × 100= (3.64 / 4) × 100= 91%.
Therefore, the loss percentage is 91%.Note: If the result obtained after the subtraction of SP from CP is negative, it means there is a loss, and the percentage of loss can be calculated by (loss/CP) × 100.
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2y = 4x - 12
Find the x and the y intercept of the line.
PLEASE HELP WILL GIVE 100 POINTS AND BRAINLIEST
Answer:
Last option: "Student should have added 2x + 3x = 5x, not 2 × 3 = 6x"
Step-by-step explanation:
2x -6 + 3x = 19
5x - 6 = 19
not 6x -6 = 19
explain how to write function rule from the table below. Then write a function fule. x=0,2,4,6. y=2,1,0,-1
Both representations are equivalent and describe the same function.the function rule for this table is: f(x) = -1/2 x 2
What do you mean by Slope in Graph ?
The slope or gradient of a line is a number that describes both the direction and the steepness of the line. A slope of a line is the change in y coordinate with respect to the change in x coordinate.
To write a function rule for a given array, we need to determine how the values in the output column (y) relate to the values in the input column (x).
Looking at the given data, we notice that the output values decrease by 1 every time the input value increases by 2. This suggests that the function is linear and that we can use the slope-intercept form of a linear equation to represent it. .
The slope-intercept form of a linear equation is y = mx b, where m is the slope and b is the y-intercept. In this case, the slope m is -1/2 because the output values decrease by 1 every time the input values increase by 2. The y-intercept b is 2 because the output value is 2 when the input value is 0.
Therefore, the function rule for this table is:
f(x) = -1/2 x 2
where x is the input value and f(x) is the output value.
Alternatively, we can also represent the function in table entries, for example:
f(0) = 2
f(2) = 1
f(4) = 0
f(6) = -1
Both representations are equivalent and describe the same function.
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a potter mixes 6 pounds of pottery plaster with 2quarts of water. Select all the statements that are true.
All the correct statements are,
a) 3 lb plaster / 1 qt water is a unit rate for the mis.
c) Using the same rate, the potter mixes 9 pounds of plaster with 3 quarts of water.
e) Using the same rate, the potter mixes 12 pounds of plaster with 4 quarts of water.
What is mean by Ratio?A ratio indicates how many times one number contain in another number. The ratio of two number is written as x : y, which is equivalent to x/y. Where, x and y are individual amount of two quantities. And, Total quantity gives after combine as x + y.
We have to given that;
A potter mixes 6 pounds of pottery plaster with 2quarts of water.
Now, We get;
The unit rate for the mis = 6/2
= 3/1
Thus, 3 lb plaster / 1 qt water is a unit rate for the mis.
And, Using the same rate, the potter mixes 9 pounds of plaster with 3 quarts of water.
Using the same rate, the potter mixes 12 pounds of plaster with 4 quarts of water.
Thus, All the correct statements are,
a) 3 lb plaster / 1 qt water is a unit rate for the mis.
c) Using the same rate, the potter mixes 9 pounds of plaster with 3 quarts of water.
e) Using the same rate, the potter mixes 12 pounds of plaster with 4 quarts of water.
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The complete question is shown in figure.
Anthony wants to plant a garden but is worried that rabbits will eat his crop so he decides to put up a fence around his plot. one side of the garden will be adjacent to a barn which is 22 feet long. he wants to be 176 square feet
Answer:
Step-by-step explanation:
.
The best way for Anthony to plan his garden is to create a rectangular plot. He can use the side of the barn as one side of the rectangle, and then measure out the other three sides. The total length of the three sides will be 176 feet. He can divide this into two sides that are 88 feet long and two sides that are 44 feet long. This will give him a rectangular plot that is 176 square feet.
Once Anthony has the dimensions of the plot, he can build a fence around it to protect it from rabbits. He can use a variety of materials such as wood, wire, or plastic mesh to build the fence. The fence should be at least four feet tall and buried at least six inches deep to be effective. If he chooses to use wire, he should use thick, galvanized wire to make sure that the rabbits cannot chew through it.
Once the fence is in place, Anthony can begin planting his garden. He should also consider adding a layer of mulch or straw around the outside of the fence to discourage the rabbits from digging underneath it. With the right planning and protection, Anthony should be able to enjoy a successful garden.
there are 40 marbles in an urn: 14 are green and 26 are yellow. you reach into the urn and randomly select 4 marbles without replacement. what is the probability that at least one of the marbles is green
Answer:
p=0,83641536
Step-by-step explanation:
Let's calculate the probability that all 4 marbles are yellow:
p=26/40*25/39*24/38*23/37 ( no replacement)
=0,1635846372688....
probability that at least one of the marbles is green= 1-p
=0,83641536...
I need a lil help, I am some how stuck here in math.
a. The value of c in the probability mass function when x is a discrete random variable is 0.15
b. The value of P(x > 3) is 0.25
c. The value of P(3 ≤ x ≤ 5) is 0.15
d. the probability that x is less than 6 given that it is greater than or equal to 1 is approximately 0.353.
What is probability mass function?In probability mass function, sum of the probabilities for all possible values of x must be equal to 1
Thus,
0.2 + 2c + 0.2 + c + 0.1 = 1
Solve for c
c = 0.15
Hence, the probability mass function for x can be rewritten as;
x: 0 1 2 4 10
p(x): 0.2 0.3 0.2 0.15 0.1
To find P(x > 3), add the probabilities for all values of x that are greater than 3. The values greater than 3 are 4 and 10
sum of their probabilities
P(x > 3) = P(x = 4) + P(x = 10)
= 0.15 + 0.1
= 0.25
To find P(3 ≤ x ≤ 5),sum the probabilities for all values of x between 3 and 5, inclusive:
P(3 ≤ x ≤ 5) = P(x = 4)
= 0.15
To find P(x < 6 | x ≥ 1), use the formula for conditional probability:
P(x < 6 | x ≥ 1) = P(x < 6 and x ≥ 1) / P(x ≥ 1)
To find the numerator, we sum the probabilities for all values of x between 1 and 5, inclusive
P(x < 6 and x ≥ 1) = P(x = 1) + P(x = 2) + P(x = 4)
= 0.3
To find the denominator, we sum the probabilities for all values of x greater than or equal to 1:
P(x ≥ 1) = P(x = 1) + P(x = 2) + P(x = 4) + P(x = 10)
= 0.85
Therefore, we have
P(x < 6 | x ≥ 1) = (0.3 / 0.85) ≈ 0.353
Thus, the probability that x is less than 6 given that it is greater than or equal to 1 is approximately 0.353.
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The distribution of monthly charges for cellphone plans in the United States is approximately normal with a mean of $62 and a standard deviation of $18. What percentage of plans have charges that are less than $83.60?
About 88.49% of cellphone plans have charges that are less than $83.60.
How to determine the percentage of plans have charges that are less than $83.60?To determine the percentage of plans that have charges less than $83.60, we need to find the z-score (z) using the given mean and standard deviation, and then look up the corresponding area under the normal distribution curve.
z = (x – μ) / σ
where x = 83.60, mean, μ = 62 and standard deviation, σ = 18
Thus, the z-score of $83.60 is:
z = (83.60 - 62) / 18 = 1.2
Using a standard normal distribution table, we can find that the area to the left of z = 1.20 is 0.8849 or 88.49% (check image attached).
Therefore, about 88.49% of cellphone plans have charges that are less than $83.60.
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which of the following options correctly describe scientific notation? select all that apply. multiple select question. one digit is present to the right of the decimal point in all cases. the exponent can be a positive or negative integer. the number must be a positive integer. one digit is present to the left of the decimal point in all cases.
"At least one digit is present to the left of the decimal point in all cases" and "the exponent can be a positive or negative integer" are the correct option for the given question.
Decimal numbers, also known as base-10 numbers. They use a system of digits from 0 to 9 and a decimal point to represent values. The decimal point separates the integer part of the number from the fractional part.
For example, in the decimal number 56.36, 56 is the integer part and 36 is the fractional part.
Hence, at least one digit is present to the left of the decimal point in all cases.
In scientific notation, the exponent is used to represent very large or very small numbers. The number is written in the form of a x \(10^n\) where 'a' is a decimal number between 1 and 10 (inclusive) and 'n' is an integer (positive or negative) exponent.
Say, for example, 0.00006 can be written as 6 x \(10^{-5}\) where 6 is the coefficient and -5 is the exponent.
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A picture frame is designed to take a 6cm x 8cm picture. The border is the exact same width all round and its area is 32 cm^2. How wide is the border?
4x^2-11x=78 quadratic formula
Gabby read 98 pages of a book then stopped. She later decided to continue the book and read 37 more pages every day.
Let d represent the number of days since Gabby decided to continue the book and p represent the total number of pages of the book she had read.
Answer:
number of days = 3
total number of pages=135
Step-by-step explanation:
98÷49= 2
37=1 day
total number of days=3days
Total number of pages read=135 pages
The Olympiad task For the 10th grade if you don 't know how to solve it , say it right away . There is no time limit for a solution, the main thing is to solve in detail
Given
\(\begin{gathered} f(\frac{x}{1+x})=\frac{1}{2}f(x) \\ f(1-x)=1-f(x) \end{gathered}\)Putting
\(x=1\)In the first equation, we have,
\(f(\frac{1}{2})=\frac{1}{2}f(1)\)Now, putting
\(x=0\)in the first equation,
\(\begin{gathered} f(0)=\frac{1}{2}f(0) \\ f(0)=0 \end{gathered}\)Putting x=0 in the second equation,
\(\begin{gathered} f(1)=1-f(0) \\ =1 \end{gathered}\)So, the value of f(1) is 1. It implies
\(f(\frac{1}{2})=\frac{1}{2}\)Now,
\(\begin{gathered} f(\frac{1}{3})=f(1-\frac{2}{3}) \\ =1-f(\frac{2}{3}) \\ =1-f(\frac{2}{2+1}) \\ =1-\frac{1}{2}f(2) \end{gathered}\)\(\begin{gathered} f(\frac{1}{4})=f(1-\frac{3}{4}) \\ =1-f(\frac{3}{4}) \\ =1-f(\frac{3}{3+1}) \\ =1-\frac{1}{2}f(3) \end{gathered}\)Continuing in this process, we have,
\(f(\frac{1}{n})=1-\frac{1}{2}f(n-1)\)Now, let us add the terms.
\(\begin{gathered} f(1)+f(\frac{1}{2})+f(\frac{1}{3})+\cdots+f(\frac{1}{n}) \\ =1+1-\frac{1}{2}f(1)+1-\frac{1}{2}f(2)+\cdots+1-\frac{1}{2}f(n-1) \\ =(1+1+1+\cdots+1)-\frac{1}{2}\lbrack f(1)+f(2)+f(3)+\cdots+f(n-1)\rbrack \\ =n-\frac{1}{2}\lbrack f(1)+f(2)+f(3)+\cdots+f(n-1)\rbrack \\ =n-\frac{1}{2}\lbrack f(1)+1-f(-1)+1-f(-2)+\cdots+1-f(-n)\rbrack \\ =n-\frac{1}{2}\lbrack(1+1+\cdots2\text{n times)-4\rbrack} \\ =n-\frac{1}{2}\lbrack2n-4\rbrack \\ =n-n+2 \\ =2 \end{gathered}\)Hence, the sum is 2.
if p(e and f)=.392, p(e/f)=.56 and p(f/e)=.7, then p(e)=
On solving the provided question, we can say that Probability(A and B) = P(A)P(B|A) and P(E or F) = P(E) + P(F) - P(E and F)
What is probability?Probability theory, a subfield of mathematics, gauges the likelihood of an occurrence or a claim being true. An event's probability is a number between 0 and 1, where approximately 0 indicates how unlikely the event is to occur and 1 indicates certainty. A probability is a numerical representation of the likelihood or likelihood that a particular event will occur. Alternative ways to express probabilities are as percentages from 0% to 100% or from 0 to 1. the percentage of occurrences in a complete set of equally likely possibilities that result in a certain occurrence compared to the total number of outcomes.
Probability(A and B) = P(A)P(B|A).
P(A and B) = P(B and A), this may also be written as P(A and B) = P(B)P(A|B).
Using the general multiplication rule, we have
P(E and F) = P(E)P(F|E)
.392 = P(E)(.7)
P(E) = .56
P(E and F) = P(F)P(E|F)
.392 = P(F)(.56), so
P(F) = .7
P(E or F) = P(E) + P(F) - P(E and F)
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If the ratio of hotels to office buildings with 4 to 9 find the ratio of office buildings to hotels
The ratio shows how many times one value is contained in another value.
The ratio of office buildings to hotels will be 9 : 4.
What is a ratio?The ratio shows how many times one value is contained in another value.
Example:
There are 3 apples and 2 oranges in a basket.
The ratio of apples to oranges is 3:2 or 3/2.
We have,
The ratio of hotels to office buildings = 4 : 9
Now,
The ratio of office buildings to hotels will be 9 : 4.
Thus,
The ratio of office buildings to hotels will be 9 : 4.
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A 15-foot ladder leans against the side of a house with its base 4 feet from the house. Use the Pythagorean Theorem to approximate how high the ladder reaches up the side of the house. Round your answer to the nearest hundredth.
Answer: The ladder reaches 14.46 feet up of the building.
Step-by-step explanation:
According to Pythagorean theorem,
In a right triangle,
(Hypotenuse)²= (Base)²+(perpendicular)^2
Using given information, we have
\((15)^2=(4)^2+(height)^2\\\\225=16+(height)^2\\\\(height)^2=209\\\\ (height)^2=\sqrt{209}\approx14.46\ feet\)
Hence, the ladder reaches 14.46 feet up of the building.
explain 3 factors that should be considered in the construction of index numbers
1. selection of index number: during the construction of index number it is to be kept in mind that the selection of the index number should be correct accordingly.
2. selection of formula: while the construction of index numbers it is compulsory to select the correct formula for the given question.
3. selection of price: selection of prices should be done accordingly while constructing the index numbers.`
construction of index number is also available in two parts:
1. simple
2. weighted
1. simple: the simple method is classified into simple aggregative and simple relative.
2. weighted: the weighted method is classified into a weighted aggregative and weighted average.
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3. A boat has a speed of 36 km/h. If a km is about 60% of a mile, then ABOUT how many miles per hour is
the boat traveling?
Therefore , the solution of the given problem of unitary method is Boat is travelling at a speed of 21.6 miles /hour.
What does "unitary method" mean?The unit method is a way of problem-solving where you first calculate the worth of a single group, subsequently multiply that value to get the answer. Simply expression, a single system value is extracted from a specified multiple using the unit method. For illustration, 40 pens will set you back 400 rupees, or $1.01. The method used to accomplish this might be standardized. a solitary nation. anything has a distinctive component. (Mathematics, Algebra) Its adjoint or reciprocal are equivalent. (Linear Algebra, Mathematical Interpretation, Mathematics of Matrix or Operators)
Here,
A boat has a speed = 36 km/hour
a km is about 60% of a mile.
1 km = 60/100 mile = 0.6 mile
the boat has a speed = (0.6 × 36) mile/hour
= 21.6 miles/ hour
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