The standard form for the circle x² - 10x + y² + 14y - 7 = 0 is (x - 5)² + (y + 7)² = 81. The correct answer is D.
To find the standard form of the given circle, we must complete the square by rearranging the equation and adding constants to both sides of the equation to create perfect squares. Here are the steps:
1. Rearrange the equation so that the x and y terms are together:
x² - 10x + y² + 14y = 7
2. Complete the square for the x terms by adding (10/2)² = 25 to both sides of the equation:
x² - 10x + 25 + y² + 14y = 7 + 25
3. Complete the square for the y terms by adding (14/2)² = 49 to both sides of the equation:
x² - 10x + 25 + y² + 14y + 49 = 7 + 25 + 49
4. Simplify the equation by factoring the perfect squares:
(x² - 10x + 25) + (y² + 14y + 49) = 7 + 25 + 49
(x - 5)² + (y + 7)² = 81
So, the standard form for this circle is (x - 5)² + (y + 7)² = 81, which is option D.
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Describe the graph of y = 1/2 x − 10 − 3 compared to the graph of y = 1 x .
The graph of y = [1/2(x -10)] - 3, compared to the graph of 1/x, represents these following transformations:
Horizontal compression by a scale factor of 2.Translation right 10 units.Translation down 3 units.What is a translation?A translation happens when either a figure or a function is moved horizontally or vertically on the coordinate plane.
The four translation rules for functions are defined as follows:
Translation left a units: f(x + a).Translation right a units: f(x - a).Translation up a units: f(x) + a.Translation down a units: f(x) - a.The translations for this problem are given as follows:
x -> x - 10: shift right 10 units.y -> y - 3: shift down 3 units.Additionally, there was a multiplication by 2 in the domain, meaning that the parent function was horizontally compressed by a factor of 2.
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Use the table below to calculate the average percent change in population in California from 2000-2009.
If California's population in 2009 was 37,000,000 and the population trend were to continue, what would the population be in the year 2015?
1.3567% is the average percent change in population in California from 2000-2009.
What is population?The term "population" is frequently used to describe the total number of people living in a particular location. To estimate the number of the residents within a certain territory, governments conduct censuses.
Population is referred to a group of people who share some established characteristics, such as region, race, culture, nationality, or religion, in sociology or population geography. The social science of demography involves the statistical analysis of populations.
average percent change in population =1.97+1.71+1.65+1.42+1.22+1.02+1.07+1.22+0.93/9
= 1.3567%
Therefore, 1.3567% is the average percent change in population in California from 2000-2009.
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A person starts walking from home and walks:
5 miles East
4 miles Southeast
6 miles South
3 miles Southwest
4 miles East
Round your answers to 2 decimal places.
This person has walked a total of _____ miles.
Find the total displacement vector for this walk:
If this person walked straight home, they'd have to walk _____ miles.
This person has walked a total of 22 miles. The total displacement vector for this walk is 10.06 miles at an angle of 12.58°. If this person walked straight home, they'd have to walk 10.06 miles.
To find the total displacement vector for this walk, we can use the Pythagorean Theorem to find the magnitude of the displacement vector and the direction of the displacement vector.
First, let's find the magnitude of the displacement vector:
d = √((Δx)² + (Δy)²)
Where Δx is the change in the x-direction and Δy is the change in the y-direction.
Δx = 5 + 4cos(45°) + 0 + 3cos(225°) + 4 = 9.83 miles
Δy = 0 + 4sin(45°) + 6 + 3sin(225°) + 0 = 2.17 miles
d = √((9.83)² + (2.17)²) = √(96.58 + 4.71) = √(101.29) = 10.06 miles
So, the magnitude of the displacement vector is 10.06 miles.
Next, let's find the direction of the displacement vector:
θ = tan⁻¹(Δy/Δx) = tan⁻¹(2.17/9.83) = 12.58°
So, the direction of the displacement vector is 12.58°.
Therefore, the total displacement vector for this walk is 10.06 miles at an angle of 12.58°.
If this person walked straight home, they'd have to walk 10.06 miles.
This person has walked a total of 22 miles. The total displacement vector for this walk is 10.06 miles at an angle of 12.58°. If this person walked straight home, they'd have to walk 10.06 miles.
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A wine producer believes that a new advertisement will increase product sales in LCBO by an average of 50 cases in a week. For a random sample of 20 LCBO stores, it was found that the average sales increase was 41.3 cases, and the sample standard deviation was 12.2 cases.
Test the null hypothesis that the population mean sales increase is at least 50 cases, stating any assumptions you can make. Use 5% as a significant level.
(You NEED to use BOTH the Critical-value approach and p-value approach to get a full mark).
To have a full mark, you NEED to show your calculation and solution (with all the STEPS) in the midterm exam file posted under Assessment-Assignment (Similar to Weekly Quizzes).
Do NOT use EXCEL
a) Reject the null hypothesis
b) Do not reject the null hypothesis
c) None of the answers are correct
we can reject the null hypothesis
Null Hypothesis (H₀): μ ≥ 50
Alternative Hypothesis (H₁): μ < 50
Assumptions:
- A normal distribution for the population of LCBO stores
- A random sample of 20 stores
- A significance level of 0.05
Critical-value approach:
First, calculate the test statistic using the formula:
Test statistic = (Sample Mean - Population Mean) / (Standard Deviation / √Sample Size)
= (41.3 - 50) / (12.2 / √20)
= -2.6
Then, compare this test statistic to the critical-value.
The critical-value is the value that divides the acceptance and rejection regions of the distribution. The critical-value for a two-tailed test with a significance level of 0.05 is ±1.96.
Since -2.6 is less than -1.96, the test statistic falls into the rejection region and we reject the null hypothesis.
p-value approach:
Calculate the p-value using the formula:
p-value = 1 - CDF(test statistic)
Where CDF is the cumulative distribution function.
= 1 - CDF(-2.6)
= 0.004
Since 0.004 is less than 0.05, we reject the null hypothesis.
In conclusion, based on the critical-value approach and the p-value approach, we can reject the null hypothesis and conclude that the population mean sales increase is less than 50 cases.
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Suppose you are testing the following claim: "More than 47% of car crashes occur within 2 miles of the motorists home." Express the null and alternative hypotheses in symbolic form for a hypothesis test (enter as a percentage).
H0:pH0:p (Enter percentages, not decimals. Example 99%, not 0.99)
Ha:pHa:p (Enter percentages, not decimals. Example 99%, not 0.99)
Use the following codes to enter the following symbols:
≥≥ enter >=
>> enter >
≤≤ enter <=
<< enter <
≠≠ enter !=
The null hypothesis (H0) is the hypothesis that is assumed to be true until there is evidence to suggest otherwise. In this case, the null hypothesis is that the percentage of car crashes that occur within 2 miles of the motorist's home is less than or equal to 47%. The alternative hypothesis (Ha) is the hypothesis that is being tested and is the opposite of the null hypothesis. In this case, the alternative hypothesis is that the percentage of car crashes that occur within 2 miles of the motorist's home is greater than 47%.
To express the null and alternative hypotheses in symbolic form, we can use the following symbols:
H0: p <= 47% (The percentage of car crashes that occur within 2 miles of the motorist's home is less than or equal to 47%)
Ha: p > 47% (The percentage of car crashes that occur within 2 miles of the motorist's home is greater than 47%)
Note that we are using the symbol <= for less than or equal to, and > for greater than. These symbols are used in hypothesis testing to express the null and alternative hypotheses in symbolic form.
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In a survey, 62% of respondents have a tablet, 30% have a laptop, and 12% of the respondents who have a laptop also have a tablet. -What is the probability that a person from the survey who has a tablet also has a laptop?
The book says that the answer is supposed to be 5. 8%, but we keep getting 19. 4%
The probability that a person from the survey who has a tablet also has a laptop is 5.8%.
To calculate this, we can use conditional probability. We know that 62% of respondents have a tablet, and 12% of the respondents who have a laptop also have a tablet. So, the probability that a respondent has a laptop given that they have a tablet can be calculated as follows:
P(laptop|tablet) = P(laptop and tablet) / P(tablet)We know that P(laptop and tablet) = 0.12 (since 12% of laptop owners also have a tablet), and P(table) = 0.62 (since 62% of respondents have a tablet). So, plugging these values into the formula gives:
P(laptop|tablet) = 0.12 / 0.62 = 0.1935 or 19.4%However, this is the probability that a person who has a tablet also has a laptop. The question asks for the probability that a person from the survey who has a tablet also has a laptop, which means we need to consider the overall probability of having a laptop, regardless of whether or not they have a tablet. This can be calculated as follows:
P(laptop) = 0.3
So, the probability that a person from the survey who has a tablet also has a laptop, given that they have a laptop, is:
P(laptop|tablet and laptop) = P(laptop and tablet) / P(laptop) = 0.12 / 0.3 = 0.4 or 5.8%
Therefore, the correct answer is 5.8%.
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DETAILS PREVIOUS ANSWERS LARCOLALG 10 2.1.047. Find the slope -intercept form of the equation of the line that has the given slope m and passes through the given point. m=-(1)/(6),(8,0)
The slope-intercept form of the equation of the line that has a slope of -1/6 and passes through the point (8,0) is y = -1/6x + 4/3.
To find the slope-intercept form of the equation of the line that has the given slope m and passes through the given point, we can use the point-slope form of a linear equation and then rearrange it to the slope-intercept form.
The point-slope form of a linear equation is given by:
y - y₁ = m(x - x₁)
Where m is the slope and (x₁, y₁) is the point that the line passes through.
In this case, m = -1/6 and the point is (8, 0).
Plugging these values into the point-slope form, we get:
y - 0 = -1/6(x - 8)
Simplifying and rearranging to the slope-intercept form, we get:
y = -1/6x + 8/6
y = -1/6x + 4/3
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What would we do next to solve for b
Answer: You have to simplify divide by x
Step-by-step explanation:
Rafael is in charge of planning a reception for 3200 people. He is trying to decide which snacks to buy. He has asked a random sample of
people who are coming to the reception what their favorite snack is. Here are the results.
Favorite
Snack
Brownies
Pretzels
Potato chips
Other
Based on the above sample, predict the number of the people at the reception whose favorite snack will be brownies. Round your answer to
the nearest whole number. Do not round any intermediate calculations.
Number of
People
27
19
74
60
Answer:
To predict the number of people whose favorite snack is brownies, we need to use the proportion of people in the sample who said brownies were their favorite and apply it to the total number of people attending the reception.
The total number of people in the sample is:
27 + 19 + 74 + 60 = 180
The proportion of people in the sample who said brownies were their favorite is:
27/180 = 0.15
To predict the number of people at the reception whose favorite snack will be brownies, we can multiply the total number of people attending the reception by the proportion of people in the sample who said brownies were their favorite:
3200 x 0.15 = 480
Therefore, we can predict that approximately 480 people at the reception will have brownies as their favorite snack.
A golf course charges a cart fee of $5 for members and $10 for nonmembers. Last Sunday, the number of members with carts was at least twice the number of nonmembers. The golf course had collected at most $300 in cart fees.
If x is the number of members and y is number of nonmembers. Using the inequalities below, tell which graph represents the possible solution for the number of each kind of golfer?
Plot the coordinates on the graph to obtain the graph of the system of inequalities.
What is graphing method to solve the equation?As Math World correctly notes, to solve a system of linear equations by graphing, we simply graph both equations in the same coordinate plane and locate the intersection of the two lines.
The visual technique actually just requires three easy actions to complete: Slope-Intercept Form should be applied to both equations.
Each linear equation's graph should be shown in the same coordinate plane. Identify the system's solution.
If the lines cross, the system's solution may be found by using the coordinates of the crossing point. The problem cannot be solved if the lines are parallel.
Let us suppose number of members =x.
Let us suppose the number of non members = y.
The system of equation for the following situation is:
5x + 10y ≤ 300
x ≥ 2y
Substitute different values of x to obtain different values of y.
Plot the coordinates on the graph to obtain the graph of the system of equations.
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Tres situaciones en las que se hace necesario el uso de números negativos
Answer:
Aquí hay tres situaciones en las que se hace necesario el uso de números negativos:
Temperaturas: Las temperaturas pueden ser positivas o negativas, dependiendo de si estamos midiendo la temperatura por encima o por debajo del punto de congelación del agua. Por ejemplo, si la temperatura es de -10°C, significa que hace 10 grados bajo cero.
Deudas: Cuando una persona toma un préstamo o usa una tarjeta de crédito, puede acumular una deuda que debe ser pagada en el futuro. Esta deuda se representa con un número negativo, ya que representa el dinero que se debe.
Altitud: Cuando se mide la altitud de un lugar, puede ser por encima o por debajo del nivel del mar. Si la altitud es por debajo del nivel del mar, se representa con un número negativo. Por ejemplo, la altitud del Mar Muerto es de aproximadamente -430 metros.
Need help fast!!! And with all the other problems
Based on the properties of rectangles, the angles and the side lengths are KN = 11 and NLK = 32
How to determine the angles and the side lengthFrom the question, we have the following parameters that can be used in our computation:
JN = 2x + 7, LN = 6x - 1
NKJ = 58 degrees
The diagonals or a rectangle are equal
So, we have
2x + 7 = 6x - 1
Evaluate the like terms
4x = 8
Divide
x = 2
So, we have
KN = 2 * 2 + 7
KN = 11
Adjacent angles in this case add up to 90 degrees
This gives
NLK = 90 - 58
Evaluate
NLK = 32
Hence, the measure of the angle is 32 degrees
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Write the vector in the form \( \langle a, b\rangle \). The vector is (Simplify your answer, including any radicals. Use integers or fractions for any numbers in the expression.)
The vector in the form \( \langle a, b\rangle \) is simply the given vector with the values of a and b identified and simplified as necessary.
To write the vector in the form \( \langle a, b\rangle \), we need to identify the values of a and b from the given vector. The value of a corresponds to the x-component of the vector, and the value of b corresponds to the y-component of the vector.
If the given vector is \( \langle 3, -4\rangle \), then the value of a is 3 and the value of b is -4.
If the given vector is \( \langle \frac{5}{2}, \sqrt{3}\rangle \), then the value of a is \(\frac{5}{2}\) and the value of b is \(\sqrt{3}\).
If the given vector is \( \langle -2\sqrt{2}, 7\sqrt{3}\rangle \), then the value of a is \(-2\sqrt{2}\) and the value of b is \(7\sqrt{3}\).
In all of these cases, the values of a and b are either integers or fractions, and any radicals are simplified as much as possible.
So, the vector in the form \( \langle a, b\rangle \) is simply the given vector with the values of a and b identified and simplified as necessary.
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You poured five bowls of cereal to find out the number of fruit flavored pieces you get in a bowl. The fruit flavored pieces numbered 3,23,20,23, and 21.
The average number of fruit flavored pieces you get in a bowl is 18.
Find the number of fruitTo find the number of fruit flavored pieces you get in a bowl, you can calculate the average of the fruit flavored pieces in the five bowls you poured.
Here's how:
1: Add the number of fruit flavored pieces in each bowl: 3 + 23 + 20 + 23 + 21 = 90
2: Divide the total number of fruit flavored pieces by the number of bowls: 90 / 5 = 18
Therefore, the average number of fruit flavored pieces you get in a bowl is 18.
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You have 3 1/4 of frozen strawberries and 4 1/2 cups of frozen blueberries. One smoothie requires 1/2 cup of frozen berries. How many smoothies can you make.
let's convert all mixed fractions to improper fractions, let's add all berries and then see how many times 1/2 go into that sum or namely division.
[tex]\stackrel{mixed}{3\frac{1}{4}}\implies \cfrac{3\cdot 4+1}{4}\implies \stackrel{improper}{\cfrac{13}{4}} ~\hfill \stackrel{mixed}{4\frac{1}{2}} \implies \cfrac{4\cdot 2+1}{2} \implies \stackrel{improper}{\cfrac{9}{2}} \\\\[-0.35em] ~\dotfill[/tex]
[tex]\stackrel{ strawberries }{\cfrac{13}{4}}~~ + ~~\stackrel{ blueberries }{\cfrac{9}{2}}\implies \cfrac{(1)13~~ + ~~(2)9}{\underset{\textit{using this LCD}}{4}}\implies \cfrac{13+18}{4}\implies \cfrac{31}{4} \\\\\\ \stackrel{\textit{now let's divide that sum by }\frac{1}{2}}{\cfrac{31}{4}\div \cfrac{1}{2}}\implies \cfrac{31}{4}\cdot \cfrac{2}{1}\implies \cfrac{31}{2}\implies {\Large \begin{array}{llll} 15\frac{1}{2} \end{array}}[/tex]
Prove the following statement. Your work should be legible, and all of your logic should be clear and justified. Sin^4 (A) – cos^4 (A) = 1 - 2 cos^2 (A)
we have proven the statement sin^4(A) - cos^4(A) = 1 - 2cos^2(A) using the identity sin^2(A) + cos^2(A) = 1 and basic algebraic manipulation. Our work is legible, and our logic is clear and justified.
To prove the statement sin^4(A) - cos^4(A) = 1 - 2cos^2(A), we can use the following steps:
Step 1: Use the identity sin^2(A) + cos^2(A) = 1 to express sin^4(A) in terms of cos^4(A).
sin^4(A) = (1 - cos^2(A))^2
Step 2: Expand the expression on the right hand side.
sin^4(A) = 1 - 2cos^2(A) + cos^4(A)
Step 3: Rearrange the terms to get the expression on the left hand side.
sin^4(A) - cos^4(A) = 1 - 2cos^2(A)
Step 4: Verify that the expression on the left hand side is equal to the expression on the right hand side.
1 - 2cos^2(A) = 1 - 2cos^2(A)
Therefore, the statement sin^4(A) - cos^4(A) = 1 - 2cos^2(A) is proven to be true.
In conclusion, we have proven the statement sin^4(A) - cos^4(A) = 1 - 2cos^2(A) using the identity sin^2(A) + cos^2(A) = 1 and basic algebraic manipulation. Our work is legible, and our logic is clear and justified.
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b. Use the factors to write an expression for the height and width in terms of the length.
If the length of the rectangle is represented by x, then the height and width can be represented by the factors a and b, respectively. Therefore, the expression for the height and width in terms of the length can be written as:
Height = a * x
Width = b * x
These expressions can be used to find the height and width of the rectangle if the length and the factors are known.
For example, if the length is 10 and the factors are 2 and 3, then the height would be 2 * 10 = 20 and the width would be 3 * 10 = 30.
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Use the table below to calculate the average percent change in population in California from 2000-2009.
If California's population in 2009 was 37,000,000 and the population trend were to continue, what would the population be in the year 2015?
Answer:
Step-by-step explanation: your hot
Find the missing dimension in the figure below if the surface area is given as 216.18 m2
Answer:
x=4.3m
Step-by-step explanation:
It is made up by six graphics.
Two triangles=1/2*x*5.6*2=5.6x
Base rectangular: 11.3x
Back rectangular: 11.3*5.6=63.28
Front rectangular:11.3*7.1=80.23
Add together: 5.6x+11.3x+63.28+80.23=216.18
16.9x=72.67
x=4.3m
Subtract. (29v)−(−13v+59)
2
9
v
-
-
1
3
v
+
5
9
59v+59
5
9
v
+
5
9
19v+59
1
9
v
+
5
9
59v−13
5
9
v
-
1
3
59v−59
5
9
v
-
5
9
Using the subtraction, the result of (29v)−(−13v+59) is 42v - 59
The distributive property is a fundamental property of arithmetic and algebra that involves the distribution of a factor across a sum or difference of two or more terms. The property states that when you multiply a number or term by a sum or difference in parentheses, you can distribute the multiplication to each term inside the parentheses and then simplify.
To subtract (29v)−(−13v+59), we first need to distribute the negative sign in front of the parentheses, which will change the signs of each term inside. So, we have
= 29v + 13v - 59
Then, we can combine the like terms, which in this case are the two terms with the variable v. We add the coefficients (numbers in front of v) to get
= 42v - 59
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Dakota is able to drive his car 32.5 miles per gallon of gasoline. Write and solve an inequality that could be used to determine the minimum number of gallons of gasoline Dakota would need to drive 117 miles to his brother's house. Then interpret the solution. Explain your reasoning. Input Field 1 of 1 Skip to input field.
Answer:
Step-by-step explanation: first if you do x/32.5 ≤ 117 = 3802.5 and also we know that 1 mile= 32.5, so if you take 32.5 * 117 it also equals 3802.5
so it will take him a minimum of 3802.5 gallons to drive 117 miles
Dakota would need at least 3.6 gallons of gasoline to drive 117 miles to his brother's house.
What is the inequality?A statement that compares two numbers or expressions using an inequality symbol, such as (less than), > (greater than), (less than or equal to), or, is known as an inequality in mathematics (greater than or equal to).
Let x be the volume of gasoline required for Dakota to travel 117 miles to his brother's home. The minimum value of x can be calculated using the inequality shown below:
x ≥ 117 / 32.5
Here, we calculate the bare minimum amount of gasoline Dakota would require to travel 117 miles by dividing the whole distance (117 miles) by the miles per gallon (32.5 miles/gallon).
The inequality is reduced to: x ≥ 3.6
Dakota would therefore require 3.6 gallons of fuel to travel 117 miles to his brother's house.
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1. APQR and ASTU are similar triangles. Prove that the slope of line segment PR and the slope of
line segment SU are equal.
Slope of PR = Slope of SU = rise / run = -3/2
How to Find the Slope of a Line?The slope of a line is the ratio of the rise over the run, which is m = change in y / change in x.
To prove that the slope of line segment PR and the slope of line segment SU are equal, find the slope of each of the line given that are similar triangles:
Slope of PR = rise / run = PQ/QR = -3/2
Slope of SU = rise / run = ST/TU = -6/4 = - 3/2
Therefore, both line segments have the same slope of -3/2.
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If Tamara has 70 dollars, she buys a dress for 10$, A drink for 4.99, a snack for 4 dollars, and a necklace for 20$, how much does she have left?
Answer:
Tamara has $31.01 left
Step-by-step explanation:
Tamara has $70
Dress - $10
Drink - $4.99
Necklace - $20
Snack - $4
Add all of these costs up then subtract them by 70
10 + 4.99 + 20 + 4 = 38.99
70 - 38.99 = 31.01
[tex]70 - (10+4.99+4+20) = 70 - 38.99 = \$ \ 31.01[/tex]
I need help on number 14 please please
Answer:
A. 5 cm
Step-by-step explanation:
AB = BC
x + 3 = 3x - 1
x - 3x = -1 - 3
-2x = -4
x = -4/-2
x = 2
BC = 3x - 1 = 3(2) - 1 = 6 - 1 = 5
if (x+1) is a factor of x³ + x²-6x +4· find the other two factors
Other roots of the given trinomial equation apart from (x -1) will be:
x = -1 -√2x = -1 + √2What is a Polynomial?A polynomial is a mathematical equation that solely uses the operations addition, subtraction, multiplication, and non-negative integer exponentiation of variables. Variables are sometimes known as indeterminate in mathematics. Majorly used polynomials are binomial and trinomial.
Given a trinomial equation x³ + x²-6x +4 that has a root (x + 1)
Let P(x) = x³ + x²-6x +4
It is given that ( x - 1 ) is one of the factor of p(x)
On dividing p(x) by (x - 1), we get:
P(x) = (x- 1) (x² +2x -1)
For the quotient of the factor we will use the quadratic formula
(x² +2x -1) = 0
From quadratic formula,
x = 1/2a(-b ± √(b² - 4ac))
x = 1/2(-2 ±√(4 +4)
x = -1 ± √2
Thus,
Other roots of the given trinomial equation apart from (x -1) will be:
x = -1 -√2
x = -1 + √2
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Complete question:
if (x - 1) is a factor of x³ + x²-6x +4· find the other two factors
The enrollment at high school R has been increasing by 15 students per year.Currently High School R has 200 students attending.High school T currently has 400 students,but it’s enrollment is decreasing in size by average of 10 students per year. If the two schools continue their current enrollment trends over the next few years, how many years will it take the schools to have the same enrollment.
So it will take 20 years for High School R and High School T to have the same enrollment.
What is enrollment?Enrollment is the process of registering for classes at a college or university. The process usually involves submitting an application and providing transcripts and other documents to the school.
The enrollment at High School R is increasing by 15 students per year while High School T is decreasing by 10 students per year. To figure out how many years it will take for both schools to have the same enrollment, we need to calculate the difference between the two schools.
High School R currently has 200 students and High School T has 400 students. The difference between the two schools is 200 students (400-200 = 200).
Since High School R is increasing by 15 students per year and High School T is decreasing by 10 students per year, it will take 20 years for the two schools to have the same enrollment.
To calculate this, we divide the difference between the two schools (200 students) by the difference between the two schools' enrollment growth (15 students - 10 students = 5 students). This gives us 200/5 = 40. Since 40 years is too long, we divide 40 by 2 and get 20, which is the answer. So it will take 20 years for High School R and High School T to have the same enrollment.
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Find the Values of the variables for each quadrilateral
The values of the variables are y =50 and x = 130
How to determine the values of the variablesFrom the question, we have the following parameters that can be used in our computation:
The isosceles trapezoid
An isosceles trapezoid is a quadrilateral with two parallel sides of equal length and two non-parallel sides of unequal length.
This means that the base angles are congruent
Using the above as a guide, we have the following for the variable y
y = 50
Solving further, we have the following equation for variable x
x + 50 = 180
Evaluate the equation
x = 130
Hence, the value of x is 130
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Let A and B be events with P(A)=0.6, P(B)=0.4, and P(B|A)=0.4. Find P(A and B)
The probability of A and B, using conditional probability, is given as follows:
0.24 = 24%.
How to obtain the conditional probability?The formula is:
[tex]P(B|A) = \frac{P(A \cap B)}{P(A)}[/tex]
In which the probabilities are listed and explained as follows:
P(B|A) is the probability of the event B happening, given that the event A happened.[tex]P(A \cap B)[/tex] is the probability of both the events A and B happening.P(A) is the probability of the event A happening.To obtain the probability of A and B, the needed parameters are already given in the problem, and are as follows:
P(B|A) = 0.4.P(A) = 0.6.Hence the probability of A and B is calculated as follows:
P(A and B) = P(A) x P(B|A)
P(A and B) = 0.6 x 0.4
P(A and B) = 0.24.
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Solve and show your solution on the grid: 2 /3 × 3 /5
The product of 2/3 and 3/5 is 2/5
Solving fractions on the grid:To represent a fraction on a grid, we need to divide the grid into equal parts based on the denominator of the fraction, and then shade in a number of those parts based on the numerator of the fraction.
Here we have
=> 2/3 × 3/5
To solve 2/3 × 3/5, we multiply the numerators together and the denominators together
=> [ 2/3 × 3/5 ] = 6/15
=> [ 2/3 × 3/5 ] = 2/5
This multiplication can be represented as given in the picture
Therefore,
The product of 2/3 and 3/5 is 2/5
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3. Find all zeros for the function.f(x) = x3 - 12x? - 13x + 24 (Half of this problem is to write the list of possible rational zeros).
To find all zeros for the function f(x) = x3 - 12x? - 13x + 24.
To find all zeros for the function f(x) = x3 - 12x? - 13x + 24, we can use the Rational Root Theorem to find the list of possible rational zeros.
The Rational Root Theorem states that if a polynomial f(x) = anxn + an-1xn-1 + ... + a1x + a0 has integer coefficients, then any rational zero of f(x) must be of the form p/q, where p is a factor of the constant term a0 and q is a factor of the leading coefficient an.
In this case, the constant term is 24 and the leading coefficient is 1. The factors of 24 are 1, 2, 3, 4, 6, 8, 12, and 24. The factors of 1 are 1. Therefore, the possible rational zeros are:
±1/1, ±2/1, ±3/1, ±4/1, ±6/1, ±8/1, ±12/1, ±24/1
Simplifying these fractions gives us the list of possible rational zeros:
±1, ±2, ±3, ±4, ±6, ±8, ±12, ±24
Now, we can use synthetic division to test each of these possible zeros until we find one that gives us a remainder of 0. Once we find a zero, we can factor it out of the polynomial and continue the process with the remaining polynomial until we have found all the zeros.
For example, if we test the possible zero 2, we get:
2 | 1 -12 -13 24
| 2 -20 -66
-----------------
1 -10 -33 -42
Since the remainder is not 0, 2 is not a zero of the function. We can continue testing the other possible zeros until we find all the zeros of the function.
Once we have found all the zeros, we can write them as a list. For example, if the zeros are 3, -2, and 4, we would write:
The zeros of the function are 3, -2, and 4.
Therefore, to find all zeros for the function f(x) = x3 - 12x? - 13x + 24, we can use the Rational Root Theorem to find the list of possible rational zeros, and then use synthetic division to test each possible zero until we find all the zeros of the function.
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