Find the
1. End behavior
2. X-intercepts
3. Positive/negative
4. Multiplicity

Find The 1. End Behavior 2. X-intercepts 3. Positive/negative 4. Multiplicity

Answers

Answer 1

The end behavior is that as x moves toward negative infinity, f(x) moves toward negative infinity and as x moves toward positive infinity, f(x) moves toward positive infinity. F(x) only has one x-intercept, which is x = 3.

What is the end behavior

The given function is f(x) = -x³ + 2x² + 3

1. End behavior:

As the leading coefficient of f(x) is negative, -x^3 dominates the behavior of the function as x moves towards -∞ or +∞. Therefore, the end behavior of the function is:

As x approaches negative infinity, f(x) approaches negative infinity.As x approaches positive infinity, f(x) approaches negative infinity.

2. X-intercepts:

To determine the x-intercepts of the function, we have to calculate the equation f(x) = -x^3 + 2x^2 + 3 = 0. We can factor out a common factor of -1 to simplify the equation:

-x^3 + 2x^2 + 3 = 0

x^3 - 2x^2 - 3 = 0

Applying synthetic division or long division, one of the roots of this equation is x = 3. We can then factor out (x - 3) using polynomial division to find the other two roots:

x^3 - 2x^2 - 3 = (x - 3)(x^2 + x + 1)

The factor of x^2 + x + 1 has no real roots, so the only x-intercept of f(x) is x = 3.

3. Positive/negative:

To determine the sign of f(x) for different values of x, we can look at the sign of each factor in the polynomial:

The leading coefficient of f(x) is negative, so for very large negative or positive values of x, f(x) is negative.The factor -x^3 is negative for negative values of x and positive for positive values of x.The factor 2x^2 is positive for all values of x.The constant term 3 is positive.

Putting these together, we can make the following sign chart for f(x):

x                         f(x)

x < 0                   -

0 < x < 3                  +

x > 3                  -

4. Multiplicity: The single root of f(x) has multiplicity 1 and is given by x = 3. This indicates that at x = 3, the graph of f(x) crosses the x-axis and switches signs.

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Related Questions

The__________of an angle is the point where the sides of the angle intersect

Help please<3​

Answers

The answer is vertex. The vertex is the point where two sides of an angle meet.

1. There are 220 seventh-grade students. To estimate the number of students who preferred the turkey club, write the proportion who preferred the turkey club. ​

Answers

The correct answer to this question is 7/220. To calculate this answer, divide the number of students who preferred the turkey club (7) by the total number of seventh-grade students (220). The fraction form of this answer is 7/220, the decimal form is 0.0318, and the percentage form is 3.18%.

What is proportion?

Proportion is a mathematical concept that compares two values, which can be the same or different, using division. It is used to identify the relationship between two or more values. It can also be used to compare the parts of a whole or to compare two different wholes. Proportions can be expressed as a fraction, a decimal, or a percentage.

This answer can be used to estimate the number of students who preferred the turkey club. To do this, multiply the total number of seventh-grade students (220) by the proportion (7/220). This calculation results in 7 students. In other words, approximately 7 of the 220 seventh-grade students preferred the turkey club.

The proportion 7/220 can also be used to estimate the number of students who preferred the turkey club if the total number of seventh-grade students changes. For example, if the total number of seventh-grade students increases to 250, the estimated number of students who preferred the turkey club can be calculated by multiplying the new total (250) by the proportion (7/220). This calculation results in 8 students.

Therefore, the correct answer to the question is 7/220.

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A parking garage in Quincy, IL charges $6.00 for the first hour and $2.00 for each additional hour or part of an hour. What is the maximum number of hours that you can park in the garage if you wish to pay no more than $14?

Answers

So the difference is +2 and we do An=A1+(n-1)*d so An=6+2n-2 So An=4+2n if you dont want to pay more than 14 you do 4+2n > 14 2n>10 n>5 so n from numbers 1 through 5 including 5

The maximum number of hours that you can park in the garage if you wish to pay no more than $14 is 5 hours.

Here's how to calculate it:

Start with the first hour charge of $6.00.Subtract this from the maximum amount you want to pay ($14) to get $8 remaining.Divide this remaining amount by the cost of each additional hour ($2) to get the number of additional hours you can park. $8/$2 = 4 additional hours.Add the first hour to the additional hours to get the maximum number of hours you can park. 1 + 4 = 5 hours.

Therefore, the maximum number of hours you can park in the garage if you wish to pay no more than $14 is 5 hours.

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PLSSSS HELP IF YOU TURLY KNOW THISSS

Answers

Answer:

You are distributing (multiplying) the three to all the terms in the parentheses.

Start:

3(x-2) = 4x + 2

Next:

3x - 6 = 4x +2

After that simplify:

-8 = x

Hope this helps!

Answer:

3x - 6 = 4x + 2 x = -8

Step-by-step explanation:

Now we have to,

→ Find the required value of x.

The property we use,

→ Distributive property.

The equation is,

→ 3(x - 2) = 4x + 2

Then the value of x will be,

→ 3(x - 2) = 4x + 2

→ 3(x) - 3(2) = 4x + 2

→ 3x - 6 = 4x + 2

→ 3x - 4x = 2 + 6

→ -x = 8

→ [ x = -8 ]

Hence, the value of x is -8.

A tabletop in the shape of a trapezoid has an area of 6,731 square centimeters. Its longer base measures 127 centimeters, and the shorter base is 85 centimeters. What is the height?

Answers

Answer:

[tex]\boxed{The \ height \ of \ the \ tabletop \ is \ 63.5 \ centimeters}[/tex]

Step-by-step explanation:

We are given that,

Length of the base = 127 centimeters

Width of the base = 85 centimeters

Area of the trapezoid shaped base = 6,731 square centimeters.

Since, we know,

[tex]\bold{Area \ of \ a\ trapezoid}=\frac{Length +Width}{2}\times Height[/tex]  

So, we get,

[tex]6731=\frac{127+85}{2}\times Height[/tex]

i.e. [tex]6731=\frac{212}{2}\times Height[/tex]

i.e. [tex]6731=106\times Height[/tex]

i.e. [tex]Height=\frac{6731}{106}[/tex]

i.e. Height = 63.5 centimeters

Hence, the height of the tabletop is 63.5 centimeters.

At the beginning of spring, Shaniece planted a small sunflower in her backyard. When it was first planted, the sunflower was 25 inches tall. The sunflower then began to grow at a rate of 0.5 inches per week. How tall would the sunflower be after 10 weeks? How tall would the sunflower be after ww weeks?

Answers

The sunflower would be 30 inches tall after 30 weeks. The sunflower be after w weeks would be 25 + 0.5 * w inches tall.

What do you mean by expression?

Mathematical expressions consist of at least two numbers or variables, at least one arithmetic operation, and a statement. It's possible to multiply, divide, add, or subtract with this mathematical operation. Unknown variables, integers, and arithmetic operators are the components of an algebraic expression. There are no symbols for equality or inequality in it.

To calculate the height of the sunflower after 10 weeks, we can use the formula:

=>height = starting height + growth rate * time elapsed

where the starting height is 25 inches, the growth rate is 0.5 inches per week, and the time elapsed is 10 weeks.

So the height after 10 weeks would be:

=>height = 25 + 0.5 * 10 = 25 + 5 = 30 inches

Therefore, the sunflower would be 30 inches tall after 10 weeks.

To calculate the height after w weeks, we can use the same formula:

=>height = 25 + 0.5 * w

So the height after w weeks would be:

=>height = 25 + 0.5 * w inches

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Please help
Solve the equation for x.
Select the correct choice below and, if necessary, fill in the answer box to complete your choice.
A. X = (Type an integer or a fraction. Simplify your answer.)
B. The solution is all real numbers.
C. There is no solution.

Answers

Answer:

X=5

Step-by-step explanation:

instructions refer to the image

What are the Big Ideas or Focal Points in the mathematics
curriculum in grades 6?

Answers

The Big Ideas or Focal Points in the mathematics curriculum for grade 6 are: 1. Ratios and Proportional Relationships
2. The Number System.  3. Expressions and Equations.  4. Geometry.  5. Statistics and Probability.



1. Ratios and Proportional Relationships: Students should be able to understand and use ratios to describe relationships between quantities, and use proportional reasoning to solve problems.

2. The Number System: Students should be able to understand and use negative numbers, and perform operations with multi-digit numbers and decimals.

3. Expressions and Equations: Students should be able to write and evaluate expressions, and use equations to solve problems.

4. Geometry: Students should be able to understand and use the properties of shapes and the relationships between them.

5. Statistics and Probability: Students should be able to use data to make predictions and understand the concept of probability.

These Big Ideas or Focal Points are the key concepts that students should master in grade 6 mathematics in order to be prepared for higher-level math courses.

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Perform long division on the following, please show work:
a) 33.143 / 100
b) 175.876 / 0.01

Answers

a) 0.33143; b) 17586.76

a) 33.143 / 100

   33.143 ÷ 100

       = 0.33143


b) 175.876 / 0.01

   175.876 ÷ 0.01

       = 17586.76

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PLUMBING A plumber charges $50 to visit a house plus $40 for every hour of work. Define a variable and write an
expression to represent the total cost of hiring a plumber.

Answers

The expression to represent the total cost of hiring a plumber is y = 50 + 40x

How to determine the expression to represent the total cost

From the question, we have the following parameters that can be used in our computation:

Charges = $50 for visiting

Rate = $40 every hours

Represent the number of hour with x and the total charge with y

Using the above as a guide, we have the following:

y = Charges + Rate * x

Substitute the known values in the above equation, so, we have the following representation

y = 50 + 40x

Hence, the equation is y = 50 + 40x

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17. Name the polyhedron that can be constructed using the given net. Assume squares and equilateral triangles were used to form each net. a. b.

Answers

The polyhedron that can be constructed using this net is a triangular pyramid.


A triangular pyramid is a polyhedron that has four faces, with one of the faces being a square and the other three faces being equilateral triangles. The given net shows a square in the center, with three equilateral triangles attached to each of its sides. When the net is folded along the edges, the square becomes the base of the pyramid and the three equilateral triangles become the sides of the pyramid. Therefore, the polyhedron that can be constructed using this net is a triangular pyramid.

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Determine if the triangles are similar.

A. Yes, SSS
B. Yes, SAS
C. Yes, AA
D. No, not similar

Answers

Option D not similar

You bought water bottles to sell and spent a total of $50. You sell each bottle for $2. Which graph shows how many bottles you have to sell to earn back the money spent on water?

Answers

The graph that shows the number of bottles that need to be sold to earn back the money spent on water is Graph C.

How to find the graph ?

The number of bottles that need to be sold to earn back the amount spent on water is :

= Total spent / profit per bottle

= 50 / 2

= 25 bottles

Graph C starts from - $ 50 to show that the amount you have is - $ 50 to show the amount spent on the bottles.

Graph C then ends at 25 bottles to show that this is where you would need to stop to have made back what you spent.

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These charts show state sales tax as of 2015. Alabarna Florida Georgia Hawaii Idaho Indiana lowa Kentucky Idaho State Mississippi Hawaii Wisconsin 4% 6% 4% 4% 6% 7% 6% 6% Louisiana Maryland Michigan Mississippi 4% 6% 6% 7% New York North Dakota Oregon Pennsylvania 6% 5% 8 Students from various states are attending a marching band conference. Each uniform costs $135 before state sales tax is added. Complete the table to show the total cost of uniforms with tax, for each group of students. Number of Students 10
5
15 Rhode Island South Carolina South Dakota Vermont West Virginia Wisconsin Wyoming 7% 6% 4% Total Cost of Uniforms

Answers

Completing the table to show the total cost of uniforms with tax, for groups of students from the four states is as follows:

State              Number     Total Cost

                  of Students    (After-tax)

Idaho                     10        $1,431.00

Mississippi             5          $722.25

Hawaii                  15        $2,106.00

Wisconsin             8          $1,134.00.

How is the total cost for each group determined?

The total cost for each group of students from the four states can be determined by multiplication.

The multiplication operation for each group or state first computes the total cost before tax and the total cost after tax.

The total cost after tax uses the sales tax factor or rate to multiply the total cost before tax.

Generally, sales taxes are levied by state and local governments to check the consumption and production of certain items and to increase the revenue of the government.

The price before state sales tax of each uniform = $135

Relevant Taxes and Number of Students:

State           Number of Students     Sales Tax Rate

Idaho                     10                                 6%

Mississippi             5                                  7%

Hawaii                  15                                  4%

Wisconsin             8                                  5%

State              Number      Total Cost     Total Cost

                  of Students    (Before tax)    (After-tax)

Idaho                     10        $1,350            $1,431.00 ($135 x 10 x 1.06)

Mississippi             5           $675             $722.25 ($135 x 5 x 1.07)

Hawaii                  15        $2,025          $2,106.00 ($135 x 15 x 1.04)

Wisconsin             8         $1,080            $1,134.00 ($135 x 8 x 1.05)

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what is 1+1-5/34x + 14y+7

Answers

Answer:

[tex] - \frac{5x}{34} + 14y + 9[/tex]

Step-by-step explanation:

Just making sure. If the way the equation is written is

[tex]1 + 1 - \frac{5}{34} x + 14y + 7[/tex]

then yeah, that's the answer. If it's formatted differently, send a comment so that I could give you the proper answer.

{ 4.82/ 7 } 358.9 / 7 Quotient

Answers

Answer:

51.2

Step-by-step explanation:

By dividing :0

tollowing operation and express in sil (x^(2)-11x+30)/(x-6)-:(x^(2)-12x+35)/(9x^(3))

Answers

The given operation (x²-11x+30)/(x-6)-(x²-12x+35)/(9x³)  expressed in simplest form is x - 11 + 29.89x⁻¹- 2x⁻²+ 8x⁻³ - (3.89)x⁻⁴.

To express this operation in simplest form, we need to find the common denominator and combine the numerators.

Find the common denominator. The common denominator of (x-6) and (9x^(3)) is (9x^(3))(x-6).

Multiply each fraction by the common denominator to get the same denominator for both fractions.

(x²-11x+30)/(x-6) * (9x³)/(9x³) = (9x³)(x²-11x+30)/(9x³)(x-6)

(x²-12x+35)/(9x³) * (x-6)/(x-6) = (x-6)(x²-12x+35)/(9x³)(x-6)

Combine the numerators and keep the same denominator.

(9x³)(x²-11x+30) - (x-6)(x²-12x+35) / (9x³)(x-6)

Simplify the numerator by distributing and combining like terms.

(9x⁵-99x⁴+270x³) - (x³-18x₂+72x-35) / (9x³)(x-6)

9x⁵-99x⁴+269x³-18x²+72x-35 / (9x³)(x-6)

Simplify the denominator by multiplying.

9x⁵-99x⁴+269x³-18x²+72x-35 / 9x⁴-54x³

Simplify the fraction by dividing each term in the numerator by the term in the denominator with the highest power.

(9x⁵/9x⁴)-(99x⁴/9x⁴)+(269x³/9x⁴)-(18x²/9x⁴)+(72x/9x⁴)-(35/9x⁴)

Simplify each term.

x - 11 + (269/9)x⁻¹- (18/9)x⁻²+ (72/9)x⁻³ - (35/9)x⁻⁴

Combine like terms.

x - 11 + (29.89)x⁻¹ - (2)x⁻² + (8)x⁻³- (3.89)x⁻⁴

Therefore, the operation  (x²-11x+30)/(x-6)-(x²-12x+35)/(9x³)   expressed in simplest form is  x - 11 + 29.89x⁻¹- 2x⁻²+ 8x⁻³ - (3.89)x⁻⁴.

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Two families attended a baseball game the first family bought three bags of popcorn in for souvenir cups which totaled $40 that second family but eight bags of popcorn in for souvenir cups which totaled $60 how much did one bag of popcorn cost

Answers

Two families attended a baseball game bought popcorns and souvenir, the cost of each pack of popcorn is $4 and cost of each pack of souvenir is $7.

An expression that depicts the relationship between two or more variables and numbers is called an equation. The provided information can be represented as, using equations:

let x be the price of popcorn and y be the price of souvenir.

First family:

[tex]3x+4y=40[/tex](equation 1)

Second family:

[tex]8x+4y=60[/tex] (equation 2)

We have a system of 2 equations with 2 variables.

3x + 4y = 40

8x + 4y = 60

We are asked for the price of 1 bag of popcorn, x, so we will eliminate y and solve for x.

from equation 2,

[tex]8x+4y=60\\4y=60-8x[/tex]

divide both sides by 4

[tex]\frac{4y}{4} =\frac{60-8x}{4} \\y=15-2x[/tex]

now putting the value of y in equation 1

[tex]3x+4(15-2x)=40\\3x+60-8x=40\\-5x=-20\\x=4\\[/tex]and [tex]y=7[/tex]

Hence, the cost of popcorn is $4 and cost of souvenir is $7.

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Prove that the medial triangle of a given triangle ABC
has sides parallel to and half the length of the sides of triangle
ABC.

Answers

The medial triangle of a given triangle ABC has sides parallel to and half the length of the sides of triangle ABC.

To prove that the medial triangle of a given triangle ABC has sides parallel to and half the length of the sides of triangle ABC, we can use the following steps:
Draw triangle ABC and label its vertices as A, B, and C.

Find the midpoints of the sides of triangle ABC. Let's call these midpoints D, E, and F.

Draw the medial triangle DEF, connecting the midpoints of the sides of triangle ABC.

We need to prove that the sides of triangle DEF are parallel to the sides of triangle ABC. To do this, we can use the fact that the midpoints of the sides of a triangle divide the sides into two segments of equal length.

Since the midpoints of the sides of triangle ABC are D, E, and F, we know that AD = DB, BE = EC, and CF = FA.

We can also use the fact that if two lines are parallel and the corresponding angles are equal, then the corresponding sides are also parallel.

Since AD = DB and BE = EC, we know that angle ADB = angle BEC and angle BDE = angle CEF.

Therefore, we can conclude that the sides of triangle DEF are parallel to the sides of triangle ABC.

To prove that the sides of triangle DEF are half the length of the sides of triangle ABC, we can use the fact that the   midpoints of the sides of a triangle divide the sides into two segments of equal length.

Since the midpoints of the sides of triangle ABC are D, E, and F, we know that AD = DB, BE = EC, and CF = FA.

Therefore, we can conclude that the sides of triangle DEF are half the length of the sides of triangle ABC.

So, the medial triangle of a given triangle ABC has sides parallel to and half the length of the sides of triangle ABC.

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pls asap i need this

Answers

The simplest form of the given expression x will be 42.

What is polynomials?

Using variables and coefficients, polynomials are algebraic expressions. The term "indeterminates" is sometimes used to describe variables. The terms Poly and Nominal, which together signify "many" and "terms," make up the word polynomial.

When exponents, constants, and variables are combined using mathematical operations like addition, subtraction, multiplication, and division, the result is a polynomial (No division operation by a variable). The expression is categorized as a monomial, binomial, or trinomial based on the number of terms it contains.

Here we assume that no of suitcases be x

So, 7/24 = x/144

24x = 1008

x = 42.

Hence the simplest form of the given expression x will be 42.

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Decide
whether perimeter or area would be used to solve the following
problem concerning the measure of the quantity.
Determining
the cost of replacing a linoleum floor with a wood
floor.

Answers

Perimeter would not be used to solve the problem of determining the cost of replacing a linoleum floor with a wood floor. Perimeter is a measure of the boundary of a two dimensional shape, such as a square, rectangle, or triangle. This measure would not be useful in calculating the cost of replacing a floor, as the cost of the flooring materials will depend on the total area of the floor, rather than its perimeter.

Area is the measure of the two dimensional space of a shape, and would be the correct measure to use when calculating the cost of replacing a floor. Area is calculated by measuring the length and width of the floor, then multiplying them together. The cost of the flooring materials can then be calculated by multiplying the area of the floor by the cost of the materials per square foot. This would give an accurate figure for the total cost of the flooring materials.

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A geometric sequence is shown below.
5, 11, 29, 83, ...
Which function describes this sequence?

Answers

The given sequence is not a geometric sequence, the quotients between consecutive numbers are different.

Which function describes this sequence?

Remember that the recursive formula for a geometric sequence is:

f(n) = r*f(n - 1)

Where r is the common ratio.

Here we have the terms:

5, 11, 29, 83

To get the value of r, take the quotient between consecutive terms:

r = 11/5 = 2.2

r = 29/11 = 2.63

r = 83/29 = 2.86

We should get the same value of r for every ofthese quotients, then we can conclude that the given sequence of numbers is not a geometric sequence, is other type of sequence.

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Find the sum of the polynomials (ax^2+2x-5) and (-2ax^2+a) and evaluate that sum when a=7 and x=-5

Answers

Answer:

29+3374=32483 that is the solution for the question

hope this helps <3

15 POINTSSS!!!!!!! HELP A GIRL OUTTTTTTTT

Answers

The function that represents an exponential growth would be = f(X) = 0.3 ( 1.05) ^x. That is option C.

What is an exponential growth?

An exponential growth of a function is defined as the growth that shows increase rates with respect to a given time.

There are two types of exponential functions: exponential growth and exponential decay.

The function that shows an exponential growth has the formula = f (x) = b^x, when b > 1.

From the examples given in the options above, the correct option that represents the exponential growth is f(X) = 0.3 ( 1.05) ^x. Thai so because 1.05 is greater than 1.

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Its an unexact root
and I know its 3∛6 but i need procedures you can also do the rest :)

D) [tex]\sqrt[3]{162}[/tex]
E)[tex]\sqrt[3]{375}[/tex]
F)[tex]\sqrt[4]{405}[/tex]

Answers

The  product of 3∛6 and 2∛6 is equals to 18.

What is underroot ?

In mathematics, the symbol "√" is called the radical symbol, and the expression written under it is called a radicand.

To simplify 3∛6, we can use the fact that the cube root of a number can be written as a power of that number with an exponent of 1/3. Therefore, 3∛6 can be rewritten as 6^(1/3) raised to the power of 3.

D) To add 3∛6 and 2∛6, we can first factor out the common term of ∛6:

3∛6 + 2∛6 = (3 + 2)∛6 = 5∛6

So the sum of 3∛6 and 2∛6 is 5∛6.

E) To subtract 2∛6 from 4∛6, we can again factor out the common term of ∛6:

4∛6 - 2∛6 = (4 - 2)∛6 = 2∛6

So the difference between 4∛6 and 2∛6 is 2∛6.

F) To multiply 3∛6 by 2∛6, we can use the fact that the product of two roots with the same index can be found by multiplying the radicands together:

3∛6 x 2∛6 = (3 x 2)∛(6 x 6) = 6∛36

Since the cube root of 36 is 3 (3 x 3 x 3 = 27 and 4 x 4 x 4 = 64), we can simplify this further:

6∛36 = 6 x 3 = 18

Therefore, the product of 3∛6 and 2∛6 is equals to 18.

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Mattie Evans drove 140 miles in the same amount of time that it took a turbopropeller plane to travel 440 miles. The speed of the plane was 150 mph faster than the speed
of the car. Find the speed of the plane.

Answers

By forming and solving the equations we know that the speed of the plane was 220 mph.

What are equations?

In mathematical formulas, the equals sign is used to indicate that two expressions are equal.

A mathematical statement that uses the word "equal to" between two expressions with the same value is called an equation.

like 3x + 5 = 15, for instance.

Equations come in a wide variety of forms, including linear, quadratic, cubic, and others.

So, d = rt.

t = d/r

The distances are equal.

140/r = 440/(r + 150)

Cross multiply:

140(r + 150) = 440r

140r + 21,000 = 440r

300r = 21,000

r = 70

70 + 150 = 220 mph

Therefore, by forming and solving the equations we know that the speed of the plane was 220 mph.

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Determine the coefficient and the degree of each term in the polynomial. 8x^(2)+6x+8

Answers

The coefficients of the terms in the polynomial are 8, 6, and 8, and the degrees are 2, 1, and 0

The coefficient of a term in a polynomial is the number that is multiplied by the variable. The degree of a term is the exponent of the variable. In the polynomial 8x^(2)+6x+8, there are three terms:

- The first term is 8x^(2). The coefficient of this term is 8, and the degree is 2.
- The second term is 6x. The coefficient of this term is 6, and the degree is 1.
- The third term is 8. The coefficient of this term is 8, and the degree is 0 (since there is no variable).

Therefore, the coefficients of the terms in the polynomial are 8, 6, and 8, and the degrees are 2, 1, and 0.

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VI. Solve for roots using the Quadratic Formula: A.
4x 2
−9x+2=0
B.
2x 2
−7x−1=0

Answers

The roots of equation A are  2 and 0.25.

The roots of equation B are 3.14 and -0.64.

To solve for the roots of a quadratic equation using the Quadratic Formula, we can use the formula:

x = (-b ± √(b² - 4ac)) / (2a)

Where a, b, and c are the coefficients of the equation.

For equation A, a = 4, b = -9, and c = 2. Plugging these values into the Quadratic Formula, we get:

x = (-(-9) ± √((-9)² - 4(4)(2))) / (2(4))
x = (9 ± √(81 - 32)) / 8
x = (9 ± √49) / 8
x = (9 ± 7) / 8

This gives us two possible values for x:

x = (9 + 7) / 8 = 2
x = (9 - 7) / 8 = 0.25

Therefore, the roots of equation A are 2 and 0.25.

For equation B, a = 2, b = -7, and c = -1. Plugging these values into the Quadratic Formula, we get:

x = (-(-7) ± √((-7)² - 4(2)(-1))) / (2(2))
x = (7 ± √(49 + 8)) / 4
x = (7 ± √57) / 4

This gives us two possible values for x:

x = (7 + √57) / 4 ≈ 3.14
x = (7 - √57) / 4 ≈ -0.64

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Mary wins £400.
She gives 50% to her mother.
Mary gives 20% to her sister.
She keeps the rest.
Work out how much each person receives.

Answers

Answer:

Mother: £200, Sister: £80, Mary: £120

Step-by-step explanation:

Mary has a total of £400 to start off with.

In order to calculate the amount she gives to her mother, we must multiply 400 by .5 (the decimal equivalent of 50%), which leaves us with £200 to her mother.

Do the same with her sister; multiply 400 by .2 (the decimal equivalent of 20%), which leaves us with £80.

To figure out what she is left with,  £400 - 200 - 80 = £120. Mary is left with £120.

Mary will have £120 with her, her mother will have £200 and her sister will have £80.

What is percentage?

Percentages are fractions with 100 as the denominator. It is the relation between part and whole where the value of whole is always taken as 100.

Given that, Mary won £400.

She gave 50% to her mother, 20% to her sister and rest she kept with herself,

So,

The amount her mother got =

50% of £400 = 1/2 × 400 = 200

Therefore, her mother got £200.

The amount her sister got =

20% of £400 = 1/5 × 400 = 80

Therefore, her sister got £80.

The amount Mary have = 400 - (200+80) = 400 - 280 = £120

Hence Mary will have £120 with her.

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Colleen has a wooden board that is 12 3/4 feet long. She cuts the board into three pieces. Two of the pieces are both 4 7/12 feet long.
How long is the other piece of Colleen's board?

Answers

Answer:

Step-by-step explanation: I don’t know

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