Mathematics High School

help me on this please it’s due at 11:59 and i have no idea what to do

Answers

Answer 1

1. One value of x for f(x)=-4 would be 0.
2. Should be 3.5 and -3.5 but I'm not sure

Related Questions

(2k^3 - 7k^2 + 3k) - (-4k^2 + 5k) in polynomial standard form PLEASE HELP

Answers

Answer:

2 k 3 − 3 k 2 − 2 k

Step-by-step explanation:

Answer: ...

2k^3−3k^2−2k

Which expression represents a difference of squares? A. 4x2 − 16x B. t2 + 100 C. 25k − 64 D. 81 − 49y2

Answers

Answer:

I believe it would be C, not 100% sure though

Answer:

81-49y^2

Step-by-step explanation:

If f1 is 3. 8 i 6. 3 j and f2 is 9. 3 i 3. 0 j, what is the magnitude of the projection of f1 onto the line of action of f2?

Answers

The magnitude of the projection of f1 onto the line of action of f2 is approximately 3.99.

To find the magnitude of the projection of vector f1 onto the line of action of vector f2, you can use the formula:

Magnitude of the projection = |f1| * cos(θ)

where |f1| is the magnitude of vector f1, and θ is the angle between vectors f1 and f2.

First, let's calculate the magnitude of f1:

|f1| = √($(3.8)^2 + (6.3)^2)$

|f1| = √(14.44 + 39.69)

|f1| = √54.13

|f1| ≈ 7.36

Next, we need to find the angle θ between f1 and f2. The dot product of two vectors is given by:

f1 · f2 = |f1| * |f2| * cos(θ)

where f1 · f2 represents the dot product of f1 and f2.

f1 · f2 = (3.8 * 9.3) + (6.3 * 3.0)

f1 · f2 = 35.34

Now we can solve for cos(θ):

cos(θ) = (f1 · f2) / (|f1| * |f2|)

cos(θ) = 35.34 / (7.36 * 9.3)

cos(θ) ≈ 0.542

Finally, we can calculate the magnitude of the projection:

Magnitude of the projection = |f1| * cos(θ)

Magnitude of the projection ≈ 7.36 * 0.542

Magnitude of the projection ≈ 3.99

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512,500 in three significant figures :)

Answers

Answer:

add them the answer is 6 of both significant figures.

Step-by-step explanation:

512 has three significant digits.

500 has also three significant digits.

no we add them the answer is 6 of both significant figures.

Find fy (x,y) for f(x,y)=e^xy/xy

Answers

fy(x, y) = (e^(xy)(x - 1)) / xy^2. This is the partial derivative of f(x, y) with respect to y.

To find fy(x, y) for the function f(x, y) = e^(xy)/(xy), we use the partial derivative with respect to y while treating x as a constant.

Let's begin by rewriting the function as f(x, y) = (1/xy) * e^(xy).

To differentiate this function with respect to y, we apply the quotient rule. The quotient rule states that for a function u/v, where u and v are functions of y, the derivative is given by:

(uv' - vu') / v^2.

In our case, u = e^(xy) and v = xy. Taking the derivatives, we have:

$u' = (d/dy)(e^(xy)) = xe^(xy),$

v' = (d/dy)(xy) = x.

Plugging these values into the quotient rule formula, we get:

fy(x, y) = [(xy)(xe^(xy)) - (e^(xy))(x)] / (xy)^2.

Simplifying further, we have:

fy(x, y) = [x^2e^(xy) - xe^(xy)] / (xy)^2

= [x(xe^(xy) - e^(xy))] / (xy)^2

= (x^2e^(xy) - xe^(xy)) / (xy)^2

= (xe^(xy)(x - 1)) / (xy)^2

= (e^(xy)(x - 1)) / xy^2.

Therefore,$fy(x, y) = (e^(xy)(x - 1)) / xy^2.$This is the partial derivative of f(x, y) with respect to y.To find fy(x, y) for the function f(x, y) = e^(xy)/(xy), we use the partial derivative with respect to y while treating x as a constant.

Let's begin by rewriting the function as f(x, y) = (1/xy) * e^(xy).

To differentiate this function with respect to y, we apply the quotient rule. The quotient rule states that for a function u/v, where u and v are functions of y, the derivative is given by:

(uv' - vu') / v^2.

In our case, u = e^(xy) and v = xy. Taking the derivatives, we have:

u' = (d/dy)(e^(xy)) = xe^(xy),

v' = (d/dy)(xy) = x.

Plugging these values into the quotient rule formula, we get:

fy(x, y) = [(xy)(xe^(xy)) - (e^(xy))(x)] / (xy)^2.

Simplifying further, we have:

fy(x, y) = [x^2e^(xy) - xe^(xy)] / (xy)^2

= [x(xe^(xy) - e^(xy))] / (xy)^2

= (x^2e^(xy) - xe^(xy)) / (xy)^2

= (xe^(xy)(x - 1)) / (xy)^2

= (e^(xy)(x - 1)) / xy^2.

Therefore,$fy(x, y) = (e^(xy)(x - 1)) / xy^2.$This is the partial derivative of f(x, y) with respect to y.

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Can someone plz help me

Answers

the area is 254.34 sq. ft.

Answer:

254.34 ft²

Step-by-step explanation:

diameter = 18 feet

radius = 18/2 = 9 feet

Area = pi x r²

= pi x 9²

= pi x 81

= 254.34 ft²

I’ll give you brainliest!!!!! Answer ASAP!!!! What is the first step in solving the equation?

Answers

Answer:

I think it is C. But i'm probably wrong. I had the same thing but i forget it.

Step-by-step explanation:

Hope it helps.

The box plot represents the number of tickets sold for a school dance.

A horizontal line labeled Number of Tickets sold that starts at 8, with tick marks every one unit up to 30. The graph is titled Tickets Sold for A Dance. The box extends from 17 to 21 on the number line. A line in the box is at 19. The lines outside the box end at 10 and 27.

Which of the following is the appropriate measure of variability for the data, and what is its value?

The IQR is the best measure of variability, and it equals 17.
The range is the best measure of variability, and it equals 4.
The IQR is the best measure of variability, and it equals 4.
The range is the best measure of variability, and it equals 17.

Answers

The IQR is the best measure of variability, and it equals 4.

I need help on number one please!
Points!!!

Answers

Answer:

i cant see question one very much

Step-by-step explanation:

Select the correct word to describe the function. the equation y = startfraction 5 x cubed over 8 endfraction represents function. the equation y = 6 + 0.25 ln x represents function. the equation y = startfraction 18 over 1 + 6 e superscript negative 0.25 x baseline endfraction represents function. the equation y = 5x3 + 8 represents function.

Answers

The functions and their descriptions are:

Polynomial: $y = \frac{5x^3}{8}$ and $y = 5x^3 + 8$Logarithm: $y = 6 + 0.25\ln(x)$Exponential $y = \frac{18}{1 + 6e^{-0.25x}}$

How to describe the functions?

The functions are given as:

$y = \frac{5x^3}{8}$

$y = 6 + 0.25\ln(x)$

$y = \frac{18}{1 + 6e^{-0.25x}}$

$y = 5x^3 + 8$

The functions would be described based on the type of function they represent.

Functions that use the "ln" keyword are logarithmic functions, while functions that use the "e" keyword are exponential functions.

Answers

The other x-intercept of the given ellipse cannot be determined with the information provided. The equation of the ellipse depends on the lengths of the semi-major and semi-minor axes, which are not specified. Therefore, there are multiple ellipses that can satisfy the given conditions, resulting in different values for the other x-intercept.

To find the x-intercepts of the ellipse, we need to determine the equation of the ellipse first. The standard form equation of an ellipse with foci at (h, k ± c) and x-intercepts (h ± a, k) is given by:

((x - h)² / a²) + ((y - k)² / b²) = 1

Where (h, k) represents the center of the ellipse, a is the semi-major axis length, b is the semi-minor axis length, and c represents the distance from the center to each focus.

In this case, the center of the ellipse is at (h, k) = (1.5, 1), and the distance between the center and each focus is given by c = 2.

Substituting these values into the equation, we have:

((x - 1.5)² / a²) + ((y - 1)² / b²) = 1

Now, since one of the x-intercepts is at the origin (0, 0), we can substitute these values into the equation to solve for a and b:

((0 - 1.5)² / a²) + ((0 - 1)² / b²) = 1

(2.25 / a²) + (1 / b²) = 1

Simplifying this equation, we get:

2.25 / a² + 1 / b² = 1

Now, we need to find the other x-intercept, which means finding the value of x when y is 0. Substituting y = 0 into the equation, we have:

((x - 1.5)² / a²) + ((0 - 1)² / b²) = 1

(x - 1.5)² / a² + 1 / b² = 1

Since one of the x-intercepts is at the origin, we know that x = 0 satisfies this equation:

(-1.5)² / a² + 1 / b² = 1

2.25 / a² + 1 / b² = 1

Now we have two equations:

2.25 / a² + 1 / b² = 1 (Equation 1)

2.25 / a² + 1 / b² = 1 (Equation 2)

Both equations are the same, so we can combine them:

2.25 / a² + 1 / b² = 1

Since both equations are identical, there are infinite solutions for a and b that satisfy this equation. Therefore, there is no unique value for the other x-intercept of the ellipse.

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The complete question is :

An ellipse has foci at (0,2) and (3,0). The ellipse has two x-intercepts, one of which is the origin. What is the other x-intercept?

Suppose a company wants to introduce a new machine that will produce a marginal annual savings in dollars given by S '(x)= 175 - x^2, where x is the number of years of operation of the machine, while producing marginal annual costs in dollars of C'(x) = x^2 +11x. a. To maximize its net savings, for how many years should the company use this new machine? b. What are the net savings during the first year of use of the machine? c. What are the net savings over the period determined in part a?

Answers

a) To maximize its net savings, the company should use the new machine for 7 years. b) The net savings during the first year of use of the machine are $405 (rounded off to the nearest dollar). c) The net savings over the period determined in part a are $1,833.33 (rounded off to the nearest cent).

Step-by-step explanation: a) To determine for how many years should the company use the new machine to maximize its net savings, we need to find the value of x that maximizes the difference between the savings and the costs.To do this, we need to first calculate the net savings, N(x), which is given by:S'(x) - C'(x) = 175 - x² - (x² + 11x) = -2x² - 11x + 175To find the maximum value of N(x), we need to find the critical values, which are the values of x that make N'(x) = 0:N'(x) = -4x - 11 = 0 ⇒ x = -11/4The critical value x = -11/4 is not a valid solution because x represents the number of years of operation of the machine, which cannot be negative. (i.e., not use it at all).However, this answer does not make sense because the company would not introduce a new machine that it does not intend to use. Therefore, we need to examine the concavity of N(x) to see if there is a local maximum in the feasible interval.

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10. Draw a second line on the graph in order for the system to have NO SOLUTION.
O
Write BOTH equations
for this system.
Original Line
Your Line
3456789
m=
m=
b=
b=
equation:
equation:

Answers

Answer:

Step-by-step explanation:

A parallelogram with vertices H(-2, 2),
J(5,2), K(-3, 3), and L(-4, -3) is dilated
to form a parallelogram with vertices.

H'(-5,5), J'(12.5, 5), K'(-7.5, 7.5), and
L'(-10, 7.5). Which representation best
explains the effect of this dilation?

A. (x,y) -> (3x, 3y)
Original

B. (x,y) -> (2.5x, 2.5y)

C. (x,y) -> (2x, 2y)

D. (x,y) -> (1.5x, 1.5y)

Answers

Answer: B

Step-by-step explanation:

-0.5f - 4.52 = -25.52 + f HELP PLEASE

Answers

Answer:

-0.5f - 4.52 = -25.52 + 1f

-1.5f = 21

f = 14

Answer:

Step-by-step explanation:

-4.52 + 25.52 = f + 0.5f

21 = 1.5f

f = 14

Solve the equation using number sense. I hope ya'll can understand this because i can't lol, thxs.
3d + 18 = 21
A: -1
B: 1
C: 3
D: 13

Answers

Answer: B: 1

Step-by-step explanation:

Since we already know 3 + 18 = 21, then it would only make sense for 3 x 1 + 18 to equal 21. Even then, the other answers are incorrect by process of elimination

x is an integer Write down all the solutions of inequality 3<2x +1 < 13

Answers

Answer:

1<x<6

Step-by-step explanation:

subtract 1 from every side: 2<2x<12

divide 2 every side: 1<x<6

Answer:1

Step-by-step explanation:

please help! (URGENT)

Answers

It’s 180-135 which equals 45 so it is 45 degrees for X

Geometric Series (attached image) muiltx choice

WILL GIVE THANKS !!

Answers

Answer:

Step-by-step explanation:

(B). - 28.7

4. Daesha planted 30 rosebushes, but only 60% blossomed. How many rosebushes
blossomed?

Answers

Answer:

18 rosebushes.

Step-by-step explanation:

we are finding 60% of 30, since the total is 30.

(60/100)* 30

=(6/10)*30

=180/10

=18

18 of the 30 rosebushes that were planted blossomed.

Please, rate 5 stars, give brainliest, thank. Thank you.

Answer 18
Explanation
30*0.6=18

an online store charges $5 to ship one box and $10 to ship two boxes. Write an explicit formula for an arithmetic sequence to represent the amount the online store charges to ship n boxes. Use the explicit formula to determine how much you online store charges when shipping 11 boxes.

Answers

Answer:

An explicit formula for the shipping cost is = . The store charges $55 when shipping 11 items.

Step-by-step explanation:

An online store charges when shipping 11 boxes would be; 55 dollars

What is an arithmetic sequence?

An arithmetic sequence is a sequence of integers with their adjacent terms differing with one common difference.

An arithmetic sequence, therefore, is defined by two parameters, viz. the starting term, and the common difference.

Given that the online store charges $5 to ship one box and $10 to ship two boxes.

We have to write an explicit formula for an arithmetic sequence to represent the amount the online store pays to ship n boxes.

From what we know so far;

y = 5n

Now Using the explicit formula to determine how much the online store charges when shipping 11 items.

y = 5(11)

y = 55 dollars

Hence, A online store charges when shipping 11 boxes would be; 55 dollars

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Drake’s monthly outlay include a $70 phone bill and a $120 car assuming he makes $400 a month, how much does he have to spend after paying his bills?

Answers

Assuming he makes $400 a month, how much does he have. ... (5 minutes) Drake's monthly outlays include a $70 phone bill and a $120 car payment.

The solution is, $210 does he have to spend after paying his bills.

What is Subtraction?

Subtraction is the process of taking away a number from another. It is a primary arithmetic operation that is denoted by a subtraction symbol (-) and is the method of calculating the difference between two numbers.

here, we have,

given that,

Drake’s monthly outlay include a $70 phone bill and a $120 car assuming he makes $400 a month,

i.e. we get,

Drake’s monthly outlay include a $70 phone bill and a $120 car.

so, total spend = $ 120 + 70

= $190

now, we have to find how much does he have to spend after paying his bills.

so, we have to subtract 190 from 400

i.e. 400 - 190

=210

Hence, $210 does he have to spend after paying his bills.

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Question 2 (1 point)
Evaluate: 12 + (-4)
16
8
-16
-8

Answers

i think it’s answer 8

What is the domain? I need help on this problem

Answers

The domain of the function $f(x) = \sqrt{\frac{1}{3}x + 2$ is (d) x ≥ -6

How to determine the domain of the function

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

$f(x) = \sqrt{\frac{1}{3}x + 2$

Set the radicand greater than or equal to 0

So, we have

1/3x + 2 ≥ 0

Next, we have

1/3x ≥ -2

So, we have

x ≥ -6

Hence, the domain of the function is (d) x ≥ -6

Answers

Answer: 350%

=========================================================

Explanation:

1 hour = 60 minutes

2 hours = 120 minutes (multiply both sides by 2)

2 hrs + 20 min = 120 min + 20 min (add 20 min to both sides)

2 hrs, 20 min = 140 min

Juan studied for 140 min

---------------------

Ken studied for 2/3 of an hour, so he studied for (2/3)*60 = 120/3 = 40 min

We see that Juan studied more than Ken, so that must mean Juan's study time as a percentage of Ken's study time is over 100%

This is because

100% of 40 min = 1.00*40 = 40 min200% of 40 min = 2.00*40 = 80 min300% of 40 min = 3.00*40 = 120 min

and so on

We divide Juan's time by Ken's time to get: 140/40 = 3.5 = 350%

350% of Ken's study time was Juan's study time.

In other words, if we take 350% of the 40 min figure, then we get 3.5*40 = 140 which represents Juan's study time.

If your teacher asked the reverse of this, and instead asked "what percent of Juan's study time was Ken's?", then the answer would be 40/140 = 0.2857 = 28.57% approximately.

Find the gradient of the straight line whose equation is 3y+x=5

Answers

Answer:

gradient = - $\frac{1}{3}$

Step-by-step explanation:

the equation of a line in slope- intercept form is

y = mx + c ( m is the gradient and c the y- intercept )

given

3y + x = 5 ( subtract x from both sides )

3y = - x + 5 ( divide through by 3 )

y = - $\frac{1}{3}$ x + $\frac{5}{3}$ ← in slope- intercept form

with gradient m = - $\frac{1}{3}$

who do you solve this?

Answers

Answer:18

Step-by-step explanation: the other side is 20 and there the same length so y is 18 because 18+2=20

Solve algebraically
x2 + y2 = 18
x-2y=-3

Answers

Answer:

(- $\frac{3}{5}$, - $\frac{21}{5}$ ) and (3, 3 )

Step-by-step explanation:

Given the 2 equations

x² + y² = 18 → (1)

x - 2y = - 3 → (2)

Rearrange (2) expressing x in terms of y by adding 2y to both sides.

x = 2y - 3 → (3)

Substitute x = 2y - 3 into (1)

(2y - 3)² + y² = 18 ← expand left side and simplify

4y² - 12y + 9 + y² = 18

5y² - 12y + 9 = 18 ( subtract 18 from both sides )

5y² - 12y - 9 = 0 ← in standard form

(5y + 3)(y - 3) = 0 ← in factored form

Equate each factor to zero and solve for y

5y + 3 = 0 ⇒ 5y = - 3 ⇒ y = - $\frac{3}{5}$

y - 3 = 0 ⇒ y = 3

Substitute these values into (3) for corresponding values of x

y = - $\frac{3}{5}$ : x = - $\frac{6}{5}$ - 3 = - $\frac{21}{5}$ ⇒ ( - $\frac{3}{5}$, - $\frac{21}{5}$ )

y = 3 : x = 6 - 3 = 3 ⇒ (3, 3 )

Help! 10 points & Brainliest to correct answer! (I just need a simple answer)
How do I graph an inequality in one variable?

Answers

Answer:

find the value of the inequality on the number line

Step-by-step explanation:

do open circle for greater or less than

do closed circle for equal to

draw line left or right based on greater or less than

Answer:

Step-by-step explanation:find the value of the inequality on the number line

two equal-size vectors at right angles to each other have a resultant that is

Answers

Two equal-size vectors at right angles to each other have a resultant that is equal to $\sqrt{2}$ times the magnitude of each individual vector.

The magnitude of the resultant vector of two equal-size vectors at right angles to each other can be determined using the Pythagorean theorem.

Let's assume the magnitude of each vector is represented by "a".

According to the Pythagorean theorem, the magnitude of the resultant vector, denoted as "R", can be calculated as:

R =$\sqrt{a^2 + a^2}$

R = ($\sqrt{2a^{2} )}$

R = $\sqrt{2}$ a

Therefore, the magnitude of the resultant vector is equal to $\sqrt{2}$ times the magnitude of each individual vector.

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Other Questions

Find the equation of the line shown At an Oregon fiber-manufacturing facility, an analyst estimates that the weekly number of pounds of acetate fibers that can be produced is given by the function: z = f(x, y) = 13000x + 3500y + 7x^2y - 13x^3 Where: z = the weekly # of pounds of acetate fiber x = the # of skilled workers at the plant y = the # of unskilled workers at the plant Determine the following: A) The weekly number of pounds of fiber that can be produced with 11 skilled workers and 45 unskilled workers. = pounds B) Find an expression (f_x) for the rate of change of output with respect to the number of skilled workers. = f_z = C) Find an expression (f_y) for the rate of change of output with respect to the number of unskilled workers. = f_y = D) Find the rate of change of output with respect to skilled workers when 11 skilled workers and 45 unskilled workers are employed. (Your answer will be a number.) = weekly pounds per skilled worker E) Find the rate of change of output with respect to unskilled workers when 11 skilled workers and 45 unskilled workers are employed. (Your answer will be a number.) Janet left for the grocery store rather quickly and soon realized that she had foolishly forgotten her purse. Mary Watson gets a job as a waitress, at the Daily Grind. She earns $5.25 an hour plus tips. If tips are about 15% of the meal and she sold $452.97 worth of food during her 8 hour shift, what was her gross pay for the day? How does the direction of motion of the bar magnet affect the direction of deflection of the galvanometer needle? What do you call the acting style for the early Elizabeth Place? HELPPPP PLEASEEEEEEEEE What are these times in french? Which word best completesthis sentence?The new student's efforts toherself to theteacher were obvious.A. locomotion*B. ingratiateC. inundateD. caterize which of the following is an example of a question that can be answered from fulfillment process process-level information? question 2 options: is the average time between order receipt and payment increasing or decreasing? what is the average revenue per customer order? which customers place the most orders and what do they order? all of the above what is a major difference between the phylogenetic species concept and the phenetic species concept? in a mixed school, the ratio of boys to girls was 15:11. if there were 435 boys. What is the number of girls I NEED HELP ON 1-5 PLEASE HELP I REALLY WOULD APPRECIATE IT!! evaluate own position when dealing with discrimination and human rights violations 20. DEPRECIATION Depreciation is the decrease in the value of an item resulting from its age or weac. When an item loses about the same percent of its value each year, an exponential function can be used to model its decreasing value over time. The function g(x)=12,000(0.85)'' can be used to model the value of a $12,000 car as it depreciates at an annual rate of 15% over x years. g(x) is a dilation of the parent function f(x)=0.85*. The graph shows the function g(x).a. Write the equation of a function h(x) that represents the depreciation of a $20,000 car depreciating at the same rate over x years.b. Describe h(x) as it relates to the parent function.c. What is the difference between the values of the $12,000 car and the $ 20,000 car after 5 years? Please solve this and show work. Thank you have a blessed day! QUESTION 2 (10 MARKS) REQUIRED: 2.1. 2.2. TOTAL AMRKS FOR QUESTION 2 TOTAL MARKS FOR INDIVIDUAL ASSIGNMENT MARKS 5 Briefly discuss the distinction between capital markets and money markets. In your di what focuses on developing varying schedules with the minimum number of workers ______ que Camila va a casar? conoce conoces sabas sabe PLEASE ANSWER THIS ASAP !!!!!