Hard please help. :/

Answer:

the domain is : D = ]-∞ , -5[ U ]-5 , -3[ U ]-3 , +∞[

Step-by-step explanation:

hello :

f(x) = 9x/(x+5)(x+3)

f exist for : (x+5)(x+3) ≠ 0

(x+5)(x+3)=0

x+5=0 or x+3=0  means : x= - 5 or x= -3

the domain is : D = ]-∞ , -5[ U ]-5 , -3[ U ]-3 , +∞[

Answer:

y = |x| + 1

Step-by-step explanation:

Answer:

y = |x| + 1

Step-by-step explanation:

Think about it first just in your head: if we want to translate up, that means every input (x) needs to be increased by one. The way to do this is by adding 1 outside of the absolute value sign!

You can also graph it online or on your calculator if you're confused!

Answer:

The SF is 2/3

Step-by-step explanation:

You can find this out by creating a ratio between the points and it's image. The one with the apostrophe is the image, and the bigger one is the pre-image.

Answer:

X<-8

Step-by-step explanation:

-1/2x>4

Multiple both sides by -2

-2(-1/2)x<-2(4)

Multiple even numbers of negative terms

2(1/2)x<-2(4)

Cancel out the 2

(2 this is out)(1/(2 this is out))x<-2(4)

x<-2×4

Multiple

x<-8

Answer:

t = 1.277 sec and t = 2.848 sec

Step-by-step explanation:

This problem is much more easily done by graphing it than by computing it using algebra.

The values of t we're looking for are the ones that make x = 0, so we want the solutions of [tex]0.6sin(2t)+0.4cos(2t)=0[/tex] on the interval [0, 3].

According to the graph, this is true when t = 1.277 seconds and t = 2.848 seconds.

Answer:

t = 1.28, 2.85

Step-by-step explanation:

x = 0.6sin(2t)+0.4cos(2t)

x = 0, so

0.6sin(2t)+0.4cos(2t) = 0

0.6sin(2t) = -0.4cos(2t)

Convert into tan(2t) by dividing both sides by 0.6cos(2t):

tan(2t) = -0.4/0.6

tan(2t) =-2/3

Since t lies in [0,3] ,

2t lies in [0,6]

tan(2t) =-2/3

Basic angle:

0.5880026035

Tan is negative is second and fourth quadrants

2t = 2.553590005, 5.695182704

t = 1.276795025, 2.847591352

Answer:

Cant answer

Step-by-step explanation:

Depending on the option choices and without seeing the option choices I can give you an idea of how to solve this.

Using y=mx+b we can find the y intercept by knowing that B is the value of the y Intercept

Answer:

(0,-3)

Step-by-step explanation:

Find the m the slope (Y-y)/(X-x) using the two points given. Step 2 - Find b using slope- intercept y = mx + b and 1 of the points given.

Answer:

x² + 2x - 15

Step-by-step explanation:

Given

(x - 3)(x + 5)

Each term in the second factor is multiplied by each term in the first factor, that is

x(x + 5) - 3(x + 5) ← distribute both parenthesis

= x² + 5x - 3x - 15 ← collect like terms

= x² + 2x - 15

Answer:

you have a 50-50% of landing heads and a 5 out 6 % chance of rolling a 5

Step-by-step explanation:

Answer: 1/12

Step-by-step explanation:

Answer:

Relative frequency is the number of times an envent has occured.

When finding out the number of students with high interest you would take 30/100 because there was 30 students with high frequency and 100 students all together.

30/100=30%

A)30%

Hope this helps ;)

The relative frequency of students with high interest in the new International Studies program is 30%. This is calculated by dividing the number of high interest responses (30) by the total number of responses (100), and multiplying the result by 100.

The question asks us to calculate the relative frequency of students with high interest in the new International Studies program. To do this, we divide the number of students with high interest by the total number of students surveyed.

The total number of students polled is 30 (high interest) + 50 (medium interest) + 20 (low interest), which equals 100 students. So, to calculate the relative frequency for students with high interest, we divide the number of students with high interest (30) by the total number of students surveyed (100).

The calculation is as follows: (30 / 100) * 100 = 30%

Therefore, the relative frequency of students with high interest is 30%, which corresponds to option A in your multiple choice question.

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Answer:

x =-1

y =-1

Step-by-step explanation:

to solve this system of equation, using substiution method

3x-4y=1 ........................ equation 1

x=2y+1 ............................  equation 2

subbstitute for x into equation 1

3x-4y=1 ........................ equation 1

3(2y + 1) - 4y = 1

6y + 3 -4y = 1

2y + 3 = 1

collect the like terms

2y = 1- 3

2y= -2

divide both sides by  the coefficient of y which is y

2y/2 = -2/2

y = -1

put the value of y =-1 into equation 2

x=2y+1 ............................  equation 2

x = 2(-1) + 1

x = -2 + 1

x = -1

therefore x =-1 y = -1

Answer:

15.92

Step-by-step explanation:

50 ÷ 3.14 = 15.92

Answer:

Exact form: 65/24

Decimal form: 2.7083

Mixed number form: 2 17/24

Step-by-step explanation:

4 3/8 - 1 2/3 = 2 17/24

Therefore, the sample size of a population of 200 is most likely to give a reliable conclusion is 80.

Answer:

80

Step-by-step explanation:

Answer:

Q

Step-by-step explanation:

because 42 square rooted is between 6 and 7.

Answer:

Just add up all the sides and you get the perimeter.

Answer: 2.88

Step-by-step explanation:

48 x 0.06 = 2.88 and thats how much tax you will pay!!

Answer:

$13.5

Step-by-step explanation:

27/2 = 13.5

Answer:

6 units

Step-by-step explanation:

Answer:

6 units

Step-by-step explanation:

Answer:

-7x squared -56x+63.

Step-by-step explanation:

Hope this helps!

Answer:

A

Step-by-step explanation:

Answer:

41 square units

Step-by-step explanation:

It would be easier to split this shape up into a square and a triangle at the y=5 line.

The area of the square would be 16 and the area of the triangle(1/2 base x height) would be 25. 16 + 25=41

Answer:

(w/3)-10

Hope this helps!

w/3 - 10 is an expression for the above-described series of operations.

A linear equation is an algebraic equation of the form y=mx+b, where m is the slope and b is the y-intercept, and only a constant and a first-order (linear) term are included. The variables in the preceding equation are y and x, and it is occasionally referred to as a "linear equation of two variables."

Given, divide w by 3, then subtract 10 from the result Do not simplify any part of the expression.

We need to Create an expression for the above sequence

divide w by 3

=> w/3

then subtract 10

=> w/3 - 10

Since it's written in the problem that does not simplify hence, we would simplify this equation further.

Therefore, an expression for the sequence of operations described above is w/3 - 10

Learn more about linear equations here:

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Answer:

4/12 or 1/3

Step-by-step explanation:

Answer:

1:3 or 1/3

Step-by-step explanation:

September, October, November, December

4 moths out of twelve

4/12 reduces to 1/3

The answer could be written 1/3 or 1:3.

Final answer:

If Ezra works less than or equal to 50 hours doing lawn care, he must spend at least [answer] hours walking dogs.

Explanation:

To determine the minimum number of hours Ezra must spend walking dogs when he works less than or equal to 50 hours doing lawn care, we need to refer to the given information and apply it to the situation

According to the exercise, Louis requires one hour to cut a typical lawn, while Carrie Anne needs one and one-half hours. Therefore, Louis is more efficient at cutting grass. Carrie Anne, on the other hand, can wash a car in half an hour, while Louis requires three-quarters of an hour. So, Carrie Anne is more efficient at cleaning cars.

If they each specialize in the task they are most efficient at, Louis should cut the grass, and Carrie Anne should wash cars. This way, they can maximize their output in a given amount of time.

Now, if they each work a twelve-hour day, we can calculate how many lawns they can cut and how many cars they can wash based on their efficiency. Louis can cut 12 lawns (since he requires 1 hour per lawn), and Carrie Anne can wash 24 cars (since she can wash a car in 0.5 hours).

Therefore, if they specialize in their most efficient tasks, they can cut 12 lawns and wash 24 cars in a twelve-hour day.

Answer:

IT IS 35

Step-by-step explanation:

Answer: Search Results

Featured snippet from the web

Congruent circles have congruent radii the plural of radius. Concentric circles have the same center. A central angle has a vertex on the center and endpoints on the circle. given point

Answer:

y = 3

x = -1

Step-by-step explanation:

The idea to start the problem is that we need to cancel x in one equation to find y first, therefore:

y = -x + 2 (let's multiply this entire equation by -4)

y = -4x - 1

We then have .:

- 4y = 4x - 8

   y = -4x - 1 (now we sum both equations)

.:

- 3y = -9 (isolate y)

   y = -9 / -3

   y = 3 (good we have y!)

Now come back to one of the equations, substitute y to find your x!

Substituting on the first equation we have:

3 = -x +2 (isolate x)

3 - 2 = -x

1 = -x (multiply everything by -1)

x = -1

I hope it helps :)

Answer:

Step-by-step explanation:k so high school total should be 100%

                                            middle school not taken SAT should be 63%

                                            high school have taken SAT should be 96%

basically just use your basic math. Turn the problem around and take the total(100%) and subtract what number you already know. So like This:

                                                                                                100-37=63

                                                                                                100-4=96

The subject of this question is SAT and it is related to middle school and high school. The answer provides an explanation of the survey results regarding students taking the SAT.

The subject of this question is SAT. The grade level of this question is Middle School, High School.

The table provided shows the survey results of whether middle school students and high school students have taken the SAT. From the information given, we can determine the missing values in the table:

Middle School Students Taken SAT = 37%

High School Students Not Taken SAT = 4%

*Please note that the table was not provided with the question, so we are unable to fill in the missing values.

Answer:

C

Step-by-step explanation:

First, you gotta complete the square!

x^2+12x+36 = (x+6)^2

y^2-12y+36 = (y-6)^2

So, we have (x+12)^2 + (y-6)^2 = -56 + 36 + 36

The right side of the equation is the radius^2.

Simplify:

-56 + 36 + 36 = 16

The square root of 16 is 4, so the answer is C!

Answer:

16 units

Step-by-step explanation:

Using the Pythagorean theorem, we can find 1/2 the length of b.  We will call it x

15^2 + (x)^2 = 17^2

225 + x^2= 289

Subtract 225 from each side

x^2 = 289-225

x^2 =64

Take the square root of each side

sqrt(x^2) = sqrt(64)

x =8

This is one half the length of b

b= 2*8

b = 16

Answer:

16

Step-by-step explanation:

17² = 15² + (b/2)²

64 = (b/2)²

b/2 = 8

b = 16

Perimeter formula: 2b + 2h

Area formula: b * h

Perimeter:

2(13) + 2(10)

26 + 20

46

Area:

13 * 10

130

The perimeter is 46ft.²

The area is 130ft.²

Best of Luck!

In mathematics, the perimeter of the 13ft by 10ft bedroom would be 46ft and the area would be 130 square feet.

The perimeter of a rectangle (which a bedroom is 13ft. by 10ft. mostly is) can be determined by adding up all the sides. So, the formula for a rectangle is: Perimeter = 2(length + width). Given that your length is 13ft and width is 10ft, the calculation would be Perimeter = 2(13ft + 10ft), resulting in a perimeter of 46ft.

The area of a rectangle is calculated by multiplying the length by the width. In this case: Area = length * width, therefore Area = 13ft. * 10ft., resulting in an area of 130 square feet.

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Hope this will help u...