HELPPP PLEASEEEE VERY IMPORTANTTTTTTTTTT

HELPPP PLEASEEEE VERY IMPORTANTTTTTTTTTT

Answers

Answer 1

The possible real zeros for the function will be:

Positive: 4 or 2

Negative: 1

The Descartes rule of sign is technique which helps us  to find no. of real positive/negative and imaginary zeros a function has.

To apply the rule:

1. Arrange the function in the decreasing value of exponents of variables.

2. The no. of positive real zeros of f(x) will be either equal to the number of sign change or less than the number of sign changes by an even number.

3. For real negative real zeros it will be the same but we will check the sign change of f(-x).

now let's look at the function.

f(x) = 6[tex]x^{7}[/tex] -3[tex]x^{4}[/tex] + 6[tex]x^{3}[/tex] + 9[tex]x^{2}[/tex] - 7x + 4

The sign change here is 4 times so the value of +ve zeros of f(x) will be either 4 or 2.

similarly  let's take f(-x) for negative zeros.

f(x) = 6[tex](-x)^{7}[/tex] -3[tex](-x)^{4}[/tex] + 6[tex](-x)^{3}[/tex] + 9[tex](-x)^{2}[/tex] - 7(-x) + 4

Here sign change is 1 which cannot be decreased by an even no. so it is the only value.

Therefore the positive and negative zeros of the function will be 2 or 4 and 1 respectively.

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Related Questions

when an egg is broken from the shell into a frying pan, the probability that the yoke breaks is said to be 1 in 10. If three eggs are fried. what is the probability that no yoke will be broken.​

Answers

ANSWER: 3 in 30.

EXPLINATION: since there are now 3 eggs, you must multiply the previous probability (fraction) by 3, causing you to get 3 in 30.

I honestly don’t know if this is right but i tried

Write an explicit function to represent each pattern.
Angelo sells cookies in packages, where each package contains the same number of cookies. The total number of cookies he has after 1, 2, 3, 4, and
5 packages are sold are 110, 88, 66, 44, and 22, respectively.
f(x) =

Answers

The explicit function of the packages is f(x) = a +(n-1)d.

What is explicit function?

An explicit function is a function in algebra in which the output variable (dependent variable) can be explicitly written only in terms of the input variable (independent variable). An explicit function usually involves two variables - dependent and independent variables.

the given numbers are 110,88,66,44,22.

This is an AP (arithmetic progression)

f(x) = a +(n-1)d

were,

a is the first term, n is the number of terms, d is the difference.

n= 5, d = 22, a =110

f(x) = 110 +(5-1)22

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What is the midpoint of the segment shown below?
-10
(-4, 6)
10
-10
(4,-2)
10

Answers

Answer:

Step-by-step explanation:

In the metric system each unit is ten times the size of the next smaller unit is this true or false?

Answers

This statement is false about metric system.

What is metric system?

matric systemare a group of two or more Lewis structure that represents a single polyatomic species.

Resonance is the ability of system to moves it's pi electron to the system .

Resonance structure are more significant beacuse they provide a much more realistic views of the shape of a molecule.

Each individua matric system is average into a resonance which is both true shape of the molecule .

Thus this statement is false about memetrictric system.

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Can someone help me please I need to check this answer in equations. I have the answer I just need someone to help me check it correctly. There is a way to check them as per Math equations check. 5 pts

8(4 – a) = 2a

32-8a=2a

-2a from both sides

32-10a=0

-32 from both sides

-10a=-32

A=-32/-10

Answer: 16/5=3 1/5 =3.2

Answers

Answer:

3.2

Step-by-step explanation:

8(4-a)=2a

32-8a=2a

collect like terms

32=2a+8a

32=10a

divide both sides by 10

a=3.2

Your solution is correct

Henry incorrectly said the rate 1/4 hour/ 1/12 acre can be written as the unit rate 1/48 hour per acre. What is the correct unit​ rate? What was ​'s likely​ error?

Answers

In a case whereby Henry incorrectly said the rate 1/4 hour/ 1/12 acre can be written as the unit rate 1/48 hour per acre the correct unit rate is 3hours per acre, he made the mistake by multiplying directly.

What is rate?

Rate  can be described as thequantity, or degree of something measured per unit of something else, the concept that will be used is the concept of rate.

The given rate will be   1/4 hour per 1/12 acre

but the per that was added implies division,

Then te rate will now be  1/4 hour ÷ 1/12 acre , then we can express as product as :1/4 hour * 12 /1 acre

Then we can simplify as : 3hours per acre

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The daily cost, y, of hiring a lawn service to work x hours mowing the grounds of a golf course can be modeled using a linear function. The lawn service charges a fixed cost of $100, plus an additional cost of
$25 per hour. The lawn service works a maximum of 6 hours per day. For one day of work, what is the range for this situation? 0

Answers

The range for this situation is {125, 150, ... 250}.

What is the range of a function?

The range of a function includes all the possible output (y) values when the x value is substituted with a number.

The daily cost of hiring a lawn service = y

The number of hours mowing = x hours

Fixed cost per day = $100

Variable cost per hour = $25

Maximum hours of work per day = 6 hours

Minimum hour of work per day = 1 hour

The equation for 6 hours:

y = 100 + 25x

y = 100 + 25(6)

y = 250

y = $250

For 5 hours, y = $225 (100 + 25(5)

For 4 hours, y = $200 (100 + 25(4)

For 3 hours, y = $175 (100 + 25(3)

For 2 hours, y = $150 (100 + 25(2)

For 1 hour, y = $125 (100 + 25(1)

Thus, the daily cost of hiring a lawn service ranges from  {125, 150, ... 250}.

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Solve the following quadratic equation by using the definition of a square root and write the solutions in simplified radical form. 3(y-7)² = 24​

Answers

Answer:

y = 7 + 2√2, y = 7 - 2√2

Step-by-step explanation:

We need to solve for y to find the solutions of the quadratic equation:

3(y-7)^2 = 24

(y-7)^2 = 8

y-7 = ±√8 = ±√(4*2) = ±2√2

y = 7 + 2√2

y = 7 - 2√2

2√2 is the simplified radical form because 4 is the highest factor of 8 that is a perfect square.

DUE TOMORROW HELP PLEASE!

Answers

Answer:

57°

Step-by-step explanation:

Vertical angels are congruent.  They have the same measurements.

Answer:

57

Step-by-step explanation:

<PQS and <RQN are vertical angles and thus are congruent by the Vertical Angles Theorem. If m<PQS = 57, then m<RQN = 57.

Part 2: Using Your Results
How could you estimate the minimum speed of the car that made the skid marks in this picture? What additional information do you need to know?
A helpful fact is that each dashed line on any road or highiway is 10 feet long, with 30 feet in berween dashes.
Why do the dashed road lines appear smaller near the top of the picture? How will you adjust for this in making your measurement?
Once you have determined a seale (or scales) for the picture, measure the skid marks.
Given the length of the slcid marks, what was the approximate minimum speed of the vehicle when the brakes were applied? Was the driver speeding? Explain your answer.

Answers

Answer:

I c Phil and the way u are u 3AM u are u and tahsin will u be happy so we will be crazy for a different time to kick in hamtramck tomorrow so we will have

A toy rocket is shot vertically into the air from a launching pad 7 feet above the ground with an initial velocity of 40 feet per second. The height h, in feet, of the rocket above the ground at t seconds after launch is given by the function h(t) = -16t²+40t+7. How long will it take the rocket to reach its maximum height? What is the maximum height?
The rocket reaches its maximum height at ___ second(s) after launch.
(Simplify your answer.)

Answers

The rocket reaches its maximum height at 1.25 second(s) after launch

The maximum height reached by the object is 32 feet.

Time to reach the maximum height

The function is given as

h(t) = -16t² + 40t + 7

Differentiate the above function

So, we have the following representation

h'(t) = -32t + 40

Set to 0

-32t + 40 = 0

So, we have

32t = 40

Divide by 32

t = 1.25

Hence, the time is 1.25 seconds

The maximum height

In (a), we have

t = 1.25

Substitute t = 1.25 in h(t) = -16t² + 40t + 7

h(1.25) = -16(1.25)² + 40(1.25) + 7

Evaluate

h(1.25) = 32

Hence, the maximum height is 32 feet

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5x+3y=25, 2x+12y=37 ​

Answers

x=3.5 and y=2.5



First, combine the equations in such a way that you can eliminate a variable. Then solve for the variable. Insert this value into one of the original equations and solve for the unknown variable.



See details:

Find tan 0 if sin=3/4 and 0 is in quadrant 2

Answers

Answer:

[tex]-\frac{3}{\sqrt{7} } .[/tex]

Step-by-step explanation:

1) tanΘ=sinΘ/cosΘ;

[tex]2) \ cos \theta=^+_-\sqrt{1-sin^2 \theta}; \ = > \ cos \theta=^+_-\frac{\sqrt{7}}{4};[/tex]

3) if according to the initial condition Θ is in II-quadrant, then the cosΘ<0!

[tex]cos \theta=-\frac{\sqrt{7}}{4} ;[/tex]

4) finally,

[tex]tan \theta=\frac{sin \theta}{cos \theta}=-\frac{3}{\sqrt{7}}.[/tex]

PLEASE HELP!!!:

A chemical company mixes pure water with their premium antifreeze solution to create an inexpensive antifreeze mixture. The premium antifreeze solution contains 60% pure antifreeze. The company wants to obtain 180 gallons of a mixture that contains 20% pure antifreeze. How many gallons of water and how many gallons of the premium antifreeze solution must be mixed?

Answers

The volume of premium antifreeze to be used is 60 gallons.

The volume of water to be used is 120 gallons

What is a percentage?

The percentage is calculated by dividing the required value by the total value and multiplying by 100.

Example:

Required percentage value = a

total value = b

Percentage = a/b x 100

Let the volume of 60% pure antifreeze be used to make 20% pure antifreeze.

= x gallons  

The volume of 20% pure antifreeze = 180 gallons

For 60% pure antifreeze:

C₁ = 60% , V₁ = x gallons

For 20% pure antifreeze :

C₂ = 20% , V₂ = 180  gallons

Applying,

C₁V₁ = C₂V₂

60 × x = 20 × 180

x = 60 gallons

The volume of 60% pure antifreeze used = 60 gallons.

The volume of water to be used.

= 180 - 60 gallons

= 120 gallons

Thus,

The volume of premium antifreeze to be used is 60 gallons.

The volume of water to be used is 120 gallons

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Can you find the inverse of the function y = 4x^2 + 12x + 9? Why or why not?
What domain restrictions are necessary to allow the function to have an inverse?
Find the inverse of the domain restricted function.

Answers

Inverse of the given function y= 4x² +12x + 9 is given by x=(1/2) (√y -3).

Restricted domain is required to make function one -one so that its inverse exist.

Domain of the inverse function is y ≥ 0.

As given in the question,

Given function is equal to :

y = 4x² +12x + 9

Inverse of the function exist if and only if it is one to one.

x₁ ≠ x₂

⇒2x₁ +3  ≠ 2x₂ + 3

⇒f(x₁) ≠ f(x₂)

It is one -one. Inverse exist.

y = (2x +3)²

⇒ 2x + 3 = √y

⇒x = (1/2) ( √y -3)

Restricted domain of the inverse of the function is y ≥0.

Therefore, Inverse of the given function y = 4x² +12x + 9 is given by

x = (1/2) (√y -3)

Restricted domain is required to make function one -one so that its inverse exist.

Domain of the inverse function is y ≥ 0.

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........hELP pLEASE........

Answers

The total amount that Ms. Henderson must pay, given the penalty and the amount of taxes is $1, 478.75

How to find the total amount to be paid?

First, find the total penalty on the taxes, to Ms. Henderson.

= Tax amount x Penalty percentage

= 1, 400 x 11 ¹ / ₄%

= $157.50

Because she paid in 6 months, but the penalty is for a year, Ms. Henderson's tax penalty is:

= 157.50 / 2

= $78.75

The total amount to be paid is:

= Taxes owed + Penalty

= 1, 400 + 78. 75

= $1, 478.75

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7.25% as a fraction?

Answers

Answer:

29/400

Step-by-step explanation:

Solve 6x + 2 = 2x - 14

Answers

Answer:

x = - 4

Step-by-step explanation:

6x + 2 = 2x - 14 ( subtract 2x from both sides )

4x + 2 = - 14 ( subtract 2 from both sides )

4x = - 16 ( divide both sides by 4 )

x = - 4

6x + 2 = 2x - 14

We move all terms to the left:

6x + 2 - (2x - 14) = 0

We get rid of the parentheses.

6x- 2x + 14 + 2 = 0

We add all the numbers and all the variables.

4x + 16 = 0

We move all terms containing x to the left hand side, all other terms to the right hand side

4x = -16x= -16/4x=-4

In a marching band maneuver, the marcher at the left spins 180° in place with arms spread, and hands the horn to the marcher at the right, who spins 180° with arms spread, and stops.
a. How far from the initial position is the horn?
The initial position is the hor from inch b.
What composition maps the horn from the initial position to the final position?

Answers

Answer: B

Step-by-step explanation:

B

Please help it would make my day.

Answers

Answer:

part A=329.99=25.72+23.50x

part B=12.95=13 weeks

Step-by-step explanation:

need=329.99

have=25.72

save=23.50 per week

equation

329.99=25.72+23.50x

23.50x=(329.99-25.72)

23.50x=304.24

x=12.95

=x =13

The sales tax on a laptop is $30.00 that cost $800.00. What is the percent of sales tax?

Answers

Answer:

3.75%

Step-by-step explanation:

800+3.75%=830

9/14 as a decimal rounded to nearest hundredth

Answers

Answer:

0.64

Step-by-step explanation:

9/14 is 0.642

rounding that decimal to the nearest hundredth would get you 0.64 because the 2 next to the 4 is below 5 so it would keep it the same.

Find the common difference of the arithmetic sequence: { 8, 5, 2, -1, -4, ...}

d=

Answers

Answer:

d=3

Step-by-step explanation:

because

8-5=3

5-2=3

2--1=3

-1--4=3

Complete (assume $60,000 of overhead to be distributed): (Enter amount of overhead allocated as whole dollar amounts. Round your ratio answers to the nearest hundredth.) Sq. Ft. Ratio Amount of Overhead Allocated Dept. A 10,000 A B Dept. B 30,000 C D

Answers

The completion of the ratios, resulting from the square feet occupied by Departments A and B, and the amounts of allocated overhead costs to the two departments are as follows:

                           Ratio      Amount

Department A     0.25       $15,000

Department B     0.75      $45,000

What is the ratio?

The ratio is the proportion of the whole shared by two or more numbers.

Ratios are fractional values like proportions.

Ratios, depicted in fractions, decimals, and percentages, show how much a value or variable is contained in another.

Total distributable overhead = $60,000

Ratios = 10,000:30,000

= 1:3

Sum of Ratios = 4

OR

= 0.25:0.75

Sum of Ratios = 1

Overhead Allocation:

Department   Square Feet  Ratio    Amount of Overhead Allocated

Dept. A            10,000         A = 1      B = $15,000 ($60,000 x 0.25)

Dept. B            30,000        C = 3     D = $45,000 ($60,000 x 0.75)

Thus, based on the cost driver ratios, Department A bears $15,000, while Department B will be allocated $45,000 of the distributable overheads.

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Differentiate the function with respect to x. Shot steps

Answers

The differentiation of the function  f(x) = sin⁻¹(3x⁵) is  [tex]15x^4/\sqrt{1-9x^{10}}[/tex].

What is function?

Function is a combination of different types of variable and constants.

A function is denoted by f(x).

The given function is,

f(x) = sin⁻¹(3x⁵)

Differentiate the given function with respect to x

f'(x) = d/dx(sin⁻¹(3x⁵))

The differentiation of sin⁻¹x is  [tex]1/\sqrt{1-x^2}[/tex],

f'(x) =[tex]1/\sqrt{1-(3x^5)^2}\cdot d/dx(3x^5)[/tex]

     = [tex]1/\sqrt{1-9x^{10}}\cdot 15x^4[/tex]

     = [tex]15x^4/\sqrt{1-9x^{10}}[/tex]

The differentiation of f(x) = sin⁻¹(3x⁵) is  [tex]15x^4/\sqrt{1-9x^{10}}[/tex].

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Help me with this math homework

Answers

You could buy 1 box, 14 bags and 4 single marbles and you could buy 2 box, 4 bags and 14 single marbles.

What is fundamental operation?

The fundamental operations are expressed in an order. Generally, the order will be in the format of “DMAS” where “D” stands for “Division”, “M” stands for “Multiplication”, “A” stands for “Addition”, “S” stands for “Subtraction”. This order is considered and sequentially performed from left to right.

Given, 1 box contains 10 bags of marbles

1 bag contains 10 marbles

Hence, 1 box contains 10 × 10 = 100 marbles.

Total numbers of marbles = 254

First condition is,

you can buy one box of marble = 1× 100 = 100

4 single marbles,

To find the number of bags, let x be the number of bag and one box contains 10 marbles,

therefore, x bags contains 10x marbles.

According to question,

100 + 4 +10x =254

104 +10x = 254

10x = 254- 104

10x = 150

x = 150÷10

= 15

Similarly in case of second condition,

2 boxes = 100×2 = 200

4 bags = 10× 4 = 40

Single marbles =?

200 + 40 +? =254

the single marble = 14

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Factor the difference of cubes.
Zx^{3} -125

Answers

Answer:

you cannot factor it anymore

therefore, there is no solution

12y^2-17y-5 to factor it​

Answers

After factoring the given expression [tex]12y^2-17y-5[/tex], we get (4y+1)(3y-5).

The breakdown of a thing into a product of other objects, or factors, which when multiplied together provide the original, is known as factorization or factoring in mathematics. Factorization can be done using middle term splitting method in which the middle term of the expression is broken down to factor.

Factoring the given expression by splitting the middle term -17y to -3y and 20y as product of 12 and 5 is 60 and also the product of 3 and 20 is 60.

[tex]12y^2-17y-5=12y^2+3y-20y-5\\=3y(4y+1)-5(4y+1)\\[/tex]

Now, factoring out [tex](4y+1)[/tex],

[tex]=(4y+1)(3y-5)[/tex]

Therefore, After factoring the given expression, we get [tex](4y+1)(3y-5)[/tex].

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I really need help on this math assignment it’s about probability and if work can be shown that would be great I will give 35 points

Answers

What is ratio?Comparing two amounts of the same units and determining the ratio tells us how much of one quantity is in the other. Two categories can be used to categorize ratios. Part to whole ratio is one, and part to part ratio is the other. The part-to-part ratio shows the relationship between two separate entities or groupings. For instance, a class has a 12:15 boy-to-girl ratio, whereas the part-to-whole ratio refers to the relationship between a particular group and the entire. For instance, five out of every ten people enjoy reading. As a result, the ratio of the part to the whole is 5: 10, meaning that 5 out of every 10 persons enjoy reading.

1)1000

2) 4.4%

3) 4.4

4) 9%

5)4.4%

6) 0.6%

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18. Herman decides to take up golf. His golf club membership will cost $450 for the season and he will
be charged $18 for each round of golf that he plays. Herman has decided not to spend more than
$1000 on golf for the season. Write an inequality that describes the relationship between the maximum
amount Herman wants to spend and the total golf costs for the season.

Answers

The inequality that describes the relationship between the maximum amount Herman wants to spend and the total golf costs for the season is 450 + 18x ≤ 1000.

Herman can play for a maximum of 30 rounds, which will cost $990 in total.

Herman decides to take up golf. His golf club membership will cost $450 for the season, and he will be charged $18 for each round of golf that he plays. Herman has decided not to spend more than $1000 on golf for the season.

Let the number of rounds of golf Herman plays be represented by the variable "x". We can write the inequality as given below.

450 + 18x ≤ 1000

We can further simplify and solve this inequality.

18x ≤ 1000 - 450

18x ≤ 550

x ≤ 30.56

Hence, the maximum number of rounds of golf is 30. The total cost is calculated below.

C = $450 + $18*30

C = $450 + $540

C = $990

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