Use the given zero to find the remaining zeros of the polynomial function.
P(x) = 2x3 − 5x2 + 6x − 2; 1 + i
Using the given zero . The three zeros of the polynomial function are 1 + i, 1 - i, 1/2, and 2.
What is the polynomial function?If 1 + i is a zero of the polynomial function P(x), then its conjugate, 1 - i, must also be a zero of the polynomial, since complex zeros of polynomial functions with real coefficients always come in conjugate pairs.
To find the remaining zero, we can use polynomial division or synthetic division to divide P(x) by (x - 1 - i)(x - 1 + i), which is the quadratic factor corresponding to the two known zeros:
2x^2 - 3x + 2
P(x) = --------------
(x - 1 - i)(x - 1 + i)
Now we need to solve for the roots of the quadratic factor 2x^2 - 3x + 2. We can use the quadratic formula:
x = [3 ± sqrt(9 - 4*2*2)] / (2*2)
= [3 ± sqrt(1)] / 4
= 1/2 or 2
Therefore, the remaining zeros of P(x) are 1/2 and 2. The three zeros of the polynomial function are 1 + i, 1 - i, 1/2, and 2.
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In a classroom, 100 plastic fish are in a tub. The tub is hidden from the student view. Some fish are green, and the rest are yellow. The students know that there are 100 fish, but they don’t know how many of each color there are. The students go fishing, each time, picking a random fish from the tub, recording its color, and throwing the fish back in the tub. At the end of the day, 65 fish have been chosen, 12, green and 53 yellow. What is the best estimate you can give for the number of green fish in the number of yellow fish in the tub? Describe how to calculate this best estimate, and explain why your method of calculation makes sense in a way that a seventh grader my understand. Is your best estimate necessarily accurate? Why or why not?
The best estimate for the number of fish is that there are 82 yellow fish and 18 green fish, which you can calculate using the rule of three. This estimate is expected to be accurate.
What is the estimated number of fish of each color?This can be calculated using a rule of three as follows. Let's start with the yellow fish:
53 = 65
x = 100
53 x 100 / 65 = 82 yellow fish
Green fish:
12 = 65
x = 100
12 x 100 / 65= 18 green fish
Is this estimate accurate?This estimate is expected to be accurate; however, there might be small differences in real life such as 80 yellow fish and 20 green fish.
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Walmart was having a sale on video games. They offered a 15% discount on a game that was originally priced at $30. After the sale, the discounted price of the game was increased by 10%. What is the new price of the game after this increase?
Answer:
28.05$
Step-by-step explanation:
The game got a discount of 15%.
New price is (30$) ( 0.85 ) = 25.5$ (since the discount is 15% you only pay for the 85% of the original price)
Then an increase of 10%. this is:
New price: 25.5$ (1.10) = 28.05
New price is 28$ with 5 cents
According to LIMRA, 77% of husband-wife families with kids under 18 years old have life insurance. A random sample of six husband-wife families was selected. What is the probability that five or more families have life insurance?
Answer:
0.5819 = 58.19% probability that five or more families have life insurance
Step-by-step explanation:
For each family, there are only two possible outcomes. Either they have insurance, or they do not. The probability of a family having insurance is independent of other families. So we use the binomial probability distribution to solve this question.
Binomial probability distribution
The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.
\(P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}\)
In which \(C_{n,x}\) is the number of different combinations of x objects from a set of n elements, given by the following formula.
\(C_{n,x} = \frac{n!}{x!(n-x)!}\)
And p is the probability of X happening.
77% of husband-wife families with kids under 18 years old have life insurance.
This means that \(p = 0.77\)
A random sample of six husband-wife families was selected.
This means that \(n = 6\)
What is the probability that five or more families have life insurance?
This is
\(P(X \geq 5) = P(X = 5) + P(X = 6)\)
In which
\(P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}\)
\(P(X = 5) = C_{6,5}.(0.77)^{5}.(0.23)^{1} = 0.3735\)
\(P(X = 6) = C_{6,6}.(0.77)^{6}.(0.23)^{0} = 0.2084\)
\(P(X \geq 5) = P(X = 5) + P(X = 6) = 0.3735 + 0.2084 = 0.5819\)
0.5819 = 58.19% probability that five or more families have life insurance
Select the correct answer from each drop-down menu.
The total area of the three triangles is
square units.
The area of the figure is
square units.
The total area of the three triangles is square units is 36 and the area of the figure is square units is 60.
What is the triangle?The triangle can be defined as a three-sided polygon in geometry, and it consists of three vertices and three edges. The sum of all the angles inside the triangle is 180°.
From the figure, the area of triangles can be calculated using the:
Area = (1/2)height×base length
Area of three triangle = 1/2(4×6) + 1/2(6×4) + 1/2(4×6)
Area of three triangle = 1/2(24×3) = 36 square units
Area of the figure = area of three triangle + area of the rectangle
= 36 + 6×4
= 60 square units
Thus, the total area of the three triangles is square units is 36 and the area of the figure is square units is 60.
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Where should he plot he third point
Answer:
I think he should plot the point at (4, 2)
The attachment is a repost showing what I see if Jeff attaches the 3rd point to the listed points.
Someone please help me fast! here is screenshot algebra. QUICK PLSSS
Answer:
\(\displaystyle{f(x)=3^x-5}\)
Step-by-step explanation:
Being translated up-down means that the value exists outside of x. Therefore, we can cancel B and C choice since those are horizontal (left-right) translation.
Our only choice is A and D. However, D is being translated up since it's +5. Thus, the only correct answer that a function is being translated down is:
\(\displaystyle{f(x)=3^x-5}\)
or A choice.
The sum of two numbers is 12 The product of the smaller
umber and 3 is -6. Find
the numbers
Answer:
-2 and 14
Step-by-step explanation:
-2×3=-6-2+14=12The numbers are -2 and 14
What is algebraic expression?A number, a variable, or a mix of numbers, variables, and operation symbols make up an expression. Two expressions joined by an equal sign form an equation. Word illustration: The product of 8 and 3. Word illustration: The product of 8 and 3 is 11
given
Let smaller number be x and larger number be y
x * 3 = -6
x = -6/3 = -2
x+y = 12
-2 + y = 12
y = 12+2 = 14
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Evaluate the double integral ∬R(3x−y)dA, where R is the region in the first quadrant enclosed by the circle x2+y2=16 and the lines x=0 and y=x, by changing to polar coordinates.
Answer:
\(\displaystyle 64-32\sqrt{2}+\frac{32\sqrt{2}}{3}\approx3.66\)
Step-by-step explanation:
\(\displaystyle \iint_R(3x-y)\,dA\\\\=\int^\frac{\pi}{2}_\frac{\pi}{4}\int^4_0(3r\cos\theta-r\sin\theta)\,r\,dr\,d\theta\\\\=\int^\frac{\pi}{2}_\frac{\pi}{4}\int^4_0(3r^2\cos\theta-r^2\sin\theta)\,dr\,d\theta\\\\=\int^\frac{\pi}{2}_\frac{\pi}{4}\int^4_0r^2(3\cos\theta-\sin\theta)\,dr\,d\theta\\\\=\int^\frac{\pi}{2}_\frac{\pi}{4}\frac{64}{3}(3\cos\theta-\sin\theta)\,d\theta\\\\=\int^\frac{\pi}{2}_\frac{\pi}{4}\biggr(64\cos\theta-\frac{64}{3}\sin\theta\biggr)\,d\theta\)
\(\displaystyle =\biggr(64\sin\theta+\frac{64}{3}\cos\theta\biggr)\biggr|^\frac{\pi}{2}_\frac{\pi}{4}\\\\=\biggr(64\sin\frac{\pi}{2}+\frac{64}{3}\cos\frac{\pi}{2}\biggr)-\biggr(64\sin\frac{\pi}{4}+\frac{64}{3}\cos\frac{\pi}{4}\biggr)\\\\=64-\biggr(64\cdot{\frac{\sqrt{2}}{2}}+\frac{64}{3}\cdot{\frac{\sqrt{2}}{2}}\biggr)\\\\=64-32\sqrt{2}+\frac{32\sqrt{2}}{3}\biggr\\\\\approx3.66\)
A student is attempting to convert a slope-intercept equation into standard form. Which of the following statements best applies to the sample math given below? Given y=1/4x+2 I first isolate the constant. After doing so, I get the equation -1/4x+y=2 To remove the fraction, I multiply by –4, giving the equation x-4y=2 which is the final answer. A. the work shown to isolate the constant is not correct B. the work shown to remove all fractions is not correct C. the final answer is not in standard form D. the work shown is correct
The statement that applies to the sample math is:
B. the work shown to remove all fractions is not correct
How to change the subject of the formula?The given steps are:
y = ¹/₄x + 2
- I first isolate the constant.
- After doing so, I get the equation: -¹/₄x + y = 2
- To remove the fraction, I multiply by –4, giving the equation x - 4y=2, which is the final answer.
The correct steps are as follows:
y = ¹/₄x + 2
First isolate the constant to get: y - ¹/₄x = 2
To remove the fraction, Multiply the obtained equation by –4
So, Equation : x - 4y = -8
On comparing both the work we can see that in the given work the removal of fraction is done incorrectly
They didn't multiply -4 on the right hand side .
Thus, option B applies.
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HELP LOOK AT PHOTO PLEASE
Answer:
y=60
Step-by-step explanation:
1) Find x
All the interior angles of a triangle add up to 180 degrees. Knowing this, we can construct the following equation:
\(180=x+35+25\\180=x+60\)
Subtract 60 from both sides
\(180-60=x+60-60\\120=x\)
2) Find y
A straight line has an angle measure of 180 degrees as well. Knowing this, we can construct the following equation:
\(180=x+y\\180=120+y\)
Subtract 120 from both sides of the equation
\(180-120=y+120-120\\60=y\)
There is also a second way to solve for y: An exterior angle of a triangle is equal to the sum of the opposite interior angles. y, in this case, would be the exterior angle and 35 and 25 degrees would measure the opposite interior angles. To solve for y, we just add 35 and 25, getting us 60 degrees.
I hope this helps!
Please Solve (c-3)^2=100
Answer:
BODMAS RULE
(c-3)²=100
c²-6c+9=100
c²-6c=100-9
c²-6c=91
c²-6c-91=0
then factories
Pls help! Brainliest for first correct answer!
Answer and Step-by-step explanation:
Triangle CAM is congruent to triangle IAM by the SAS postulate (Side angle Side.
This is because the midpoint is congruent with itself, and since it is midpoint, it forms right angle, making the angle part, and since its also the midpoint, it splits Ci in half, making CM congruent to CI
How many solutions does the system have? { � = 5 � + 1 � = − 2 � − 8 ⎩ ⎪ ⎪ ⎨ ⎪ ⎪ ⎧ y=5x+1 y=−2x−8
The given system of linear equations has a unique solution.
What are linear equations?A linear equation is an algebraic equation in which each term has an exponent of 1 and when graphed, the result is always a straight line.
Given that, a system of linear equations, y = 5x+1 and y = -2x-8, we are asked to find how many solutions do they have,
The rule for a system of linear equations, a₁x+b₁y+c₁ = 0 and a₂x+b₂y+c₂ = 0 are :-
When the system has a unique solution :-a₁ / a₂ ≠ b₁ / b₂, and the lines intersect at one only point.
When the system has a no solution :-a₁ / a₂ = b₁ / b₂ ≠ c₁ / c₂, and the lines are parallel.
When the system has infinite solution :-a₁ / a₂ = b₁ / b₂ = c₁ / c₂, and the lines overlaps.
Checking for the given equations,
y = 5x+1 and y = -2x-8
Converting into standard form of the linear equations,
5x-y +1 = 0 and 2x+y+8 = 0
5/2 ≠ -1
The equation is following the rule of unique solution, also the graph is intersecting at one point, [graph is attached]
Hence, the given system of linear equations has a unique solution.
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Answer:
One solution
Step-by-step explanation:
if you take away 25 from a number you will be left with two and halftimes 30. what is the number?
Which of the following conditions are sufficient to show that triangle ABC sim triangle QPR
Select all that apply.
A. m angle Q = 63
B. m angle R = 81
D. m angle P = 81
C. RP = 4.5
Answer:
C. RP = 4.5
Step-by-step explanation:
You want to know what condition is sufficient to show ∆ABC ~ ∆QPR, given three sides and 2 angles in ∆ABC, and 2 sides in ∆QPR.
SimilaritySimilarity can be shown if all three sides are proportional, or if two angles are congruent.
The offered answer choices only list one angle, so none of those will work. The answer choice that makes the third side of ∆QPR be in the same proportion as the corresponding side of ∆ABC is the condition of interest.
C. RP = 4.5
__
Additional comment
The side ratios in the two triangles are ...
AB : BC : CA = 10 : 9 : 6
QP : PR : RQ = 5 : PR : 3
For these ratios to be the same, PR must be half of BC, just as the other segments in ∆QPR are half their counterparts in ∆ABC.
cars pass a busy intersection at a rate of approximately 16 cars per minute. what is the probability that at least 1000 cars will cross the intersection in the next hour? (hint: what is the rate per hour?)
The probability that at least 1000 cars will cross the intersection in the next hour depends on the assumptions made about the distribution of car arrivals.
The probability that at least 1000 cars will cross the intersection in the next hour can be determined by first finding the rate per hour.
Convert the rate from cars per minute to cars per hour.
Since there are 60 minutes in an hour, multiply the given rate (16 cars per minute) by 60 minutes:
16 cars/minute x 60 minutes/hour = 960 cars/hour
Compare the desired number of cars (1000) with the calculated rate per hour (960 cars/hour). Since 1000 cars are more than the rate of 960 cars/hour, the probability of at least 1000 cars crossing the intersection in the next hour is less than 100%.
To determine the exact probability, we need to make some assumptions about the distribution of car arrivals.
If we assume the car arrivals follow a Poisson distribution, we can use the Poisson probability formula to find the probability of at least 1000 cars crossing the intersection:
P(X ≥ 1000) = 1 - P(X < 1000) = 1 - (P(X=0) + P(X=1) + ... + P(X=999))
Where P(X=k) = (e^(-λ) * (λ^k)) / k!,
λ is the average rate (960 cars/hour), and k is the number of cars.
Calculate the probabilities for P(X=0) to P(X=999) and sum them up.
Then subtract the sum from 1 to get the probability of at least 1000 cars crossing the intersection in the next hour.
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When an independent variable in a multiple regression model includes a value of X to a higher power, such as X squared, and this model produces a higher value of R-squared than a linear model, this suggests that the residual plot for the linear equation did not produce a random pattern around the zero line of the residual plot.
True or False
The higher R-squared value of the multiple regression model with the higher order independent variable implies that the linear model is not the best fit and that a more complex model is needed to better explain the data
1. Multiple regression models involve fitting a model that includes one or more independent variables to predict a dependent variable.
2.A value of X to a higher power, such as X squared, for an independent variable in a multiple regression model indicates that the relationship between the independent and dependent variables is not linear.
3. If this model produces a higher value of R-squared than a linear model, it means that it is a better fit for the data.
4. However, it does not necessarily imply that the linear model's residual plot is not randomly distributed around the zero line.
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Point D is located at (-2,-4) on a coordinate plane.
Part A
What are the coordinates of the point that is 5 units to the left of point D?
Part B
What are the coordinates of the point that is 5 units to the right of point D?
Answer:
Part A: (-7,-4)
Part B: (3,-4)
Step-by-step explanation:
Pls help me with this answer
student 3 i thin srry if im wrong
Answer:
student 3
Step-by-step explanation:
Find the percent of the quantity.
40% of 30=
The average annual number of jobs available for registered nurses is 103,900. If we assume a normal distribution with a standard deviation of 8040, find the probability that
A. More than 100,000 jobs are available for RNs
B. More than 80,000 but less than 95,000 jobs are available for RNs
C. If the probability is 0.1977 that more than X amount of jobs are available, find the value of X.
The value of X is 11100.
The average annual number of jobs available for registered nurses is 103,900. If we assume a normal distribution with a standard deviation of 8040, find the probability that: B. More than 80,000 but less than 95,000 jobs are available for RNs and C. If the probability is 0.1977 that more than X amount of jobs are available, find the value of X.(B) More than 80,000 but less than 95,000 jobs are available for RNsZ = (X-μ)/σZ1 = (80000 - 103900)/8040 = -1.73Z2 = (95000 - 103900)/8040 = -0.51The probability that the number of jobs is between 80,000 and 95,000 is P(-1.73 < Z < -0.51) = P(Z > -0.51) - P(Z > -1.73) = 0.6965 - 0.0423 = 0.6542
Therefore, the probability that more than 80,000 but less than 95,000 jobs are available for RNs is 0.6542.(C) If the probability is 0.1977 that more than X amount of jobs are available, find the value of X.Since we don't have a specific value of X, we will find the Z-score corresponding to the given probability: P(Z > Z) = 0.1977Using standard normal tables, we find that the Z-score is approximately 0.84. Therefore:0.84 = (X - μ) / σX = μ + 0.84σSubstituting in the given values: X = 103900 + 0.84(8040)X = 11073.6Rounding to the nearest whole number, the value of X is 11100.
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what is the sum of √27 and √108
The sum of the surd √27 and √108 is 9√3
How to sum surd?Surds are the square roots (√) of numbers that cannot be simplified into a whole or rational number.
In other words, surds have a decimal which goes on forever without repeating, and are Irrational Numbers.
Let's find the sum of the surd √27 and √108.
Therefore,
√27 + √108
√27 = √9 × 3 = 3√3
√108 = √36 × 3 = 6√3
Therefore,
3√3 + 6√3 = 9√3
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Rewrite the expression
as square of a monomial.
81x^6y^4
Answer:
\((9x^3y^2)^2\)
Step-by-step explanation:
The expression, as a square of a monomial, will be given by:
\((\sqrt{81x^6y^4})^2\)
Now, we calculate the root, applying it's properties. So
\(\sqrt{81x^6y^4} = \sqrt{81} \times \sqrt{x^6} \times \sqrt{y^4} = 9 \times x^{\frac{6}{2}} \times y^{\frac{4}{2}} = 9x^3y^2\)
The expression as a square of a monomial is given by
\((9x^3y^2)^2\)
A cone with a radius of 4 inches and a slant height of 10 inches is shown.
What is the surface area of the cone, in square inches?
62.8
125.7
150.8
O 175.9
4 in.
10 in.
Answer:
167.6190 approximately 167.62 inches
Step-by-step explanation:
formula for surface area of a cone is 1/3πr×r×slant height. How this helps.
2) In a design of a casing for gears housing we have 4 different types of fasters, 3 different bolt length and 3 different bolt locations. How many possible designs are there? 3) A driver from city A can be directly reach city B using 4 different roads, Moreover, he can also reach city B by passing by city C, he has 3 different roads from A to C, then 5 different roads from C to B. How many different choices are available?
Answer:
Q2) There are 36 possible designs for the casing for gears housing.
Q3) There are 22 different choices available to the driver.
Step-by-step explanation:
Q2) There are 4 different types of fasteners, 3 different bolt lengths, and 3 different bolt locations, for a total of 4 x 3 x 3 = 36 different combinations of fastener, bolt length, and bolt location. This means that there are 36 possible designs for the casing for gears housing.
Q3) There are 4 different roads that the driver can take directly from city A to city B, and 3 different roads that the driver can take from city A to city C, for a total of 4 + 3 = 7 different choices from city A to city B that involve either taking a direct route or going through city C. Additionally, for each of the 3 different roads from city A to city C, there are 5 different roads from city C to city B that the driver can take, for a total of 3 x 5 = 15 different choices that involve going through city C. Therefore, in total, there are 7 + 15 = 22 different choices available to the driver.
There are 36 possible designs for the gear casing. There are a total of 19 possible routes for the driver to reach City B from City A.
Explanation:This question is about the mathematical concept of combinations. In the casing for gears housing scenario, you are choosing different combinations of fasters, bolt lengths, and bolt locations which means you multiply the options together. So the number of designs is 4 fasters * 3 bolt lengths * 3 bolt locations = 36 different designs possible.
For the road from city A to city B, you can either go directly or pass by city C. For direct paths, there are 4 choices. In the case of passing by city C, you multiply the options together which means 3 different roads from A to C * 5 roads from C to B = 15 choices. Therefore, by adding both possibilities, you get a total of 4 choices (direct) + 15 choices (via city C) = 19 different choices are available.
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The state of Texas is about 6 times the size of the state of New Jersey. The state of Pennsylvania
is half the size of the state of Texas. What is the ratio of the size of New Jersey to the size of
Pennsylvania?
Answer:
New Jersey is 1/3 the size of Pennsylvania or
Pennsylvania is 3 times the size of New Jersey
Step-by-step explanation:
T = Texas N = New Jersey P = Pennsylvania
T = 6N
P = 1/2T
so flip it
if
P = 1/2T
then
T=2P
2P = T = 6N
2P = 6N
then simpify by dividing both sides by 2
P = 3N
Ratio of the size of New Jersey to the size of
Pennsylvania
so flip it
if
P = 3N
then
1/3P = N
N = 1/3P
so
Ratio is
New Jersey is 1/3 the size of Pennsylvania
5.2÷8
hello can someone help me on this plz
Answer:
0.65
hope this helps
Step-by-step explanation:
please answer the following question, AND NO LINKS OR YOU WILL GET REPORTED.
Answer:
Mode
Step-by-step explanation:
I believe mode because 8 is the number that appears most often in this set of numbers.
note: Mode is the number that appears most often in any set of numbers.
Triangle FGH, with vertices F(-5,-7), G(-2,-5), and H(-6,-2), is drawn inside a rectangle, as shown below.
The area of the triangle FGH is equal to 13√10 unit²
Given that the vertices;
F(-5,-7), G(-2,-5), and H(-6,-2)
We have to find the area of the triangle as;
Area of triangle = 1/2bh²
Here,
Area of triangle FGH = 1/2 (GH) (FG)²
Now,
Length of FG = √26
Length of GH = √10
Then,
Area of triangle FGH = 1/2 (GH) (FG)²
Area of triangle = 1/2 × √10 × √26²
Area of triangle = 1/2 × √10 × 26
Area of triangle FGH = 13√10
Therefore,
The area of the triangle FGH = 13√10 unit²
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