What is the midpoint of the line segment with the endpoints J(-9,-4) and K(7,8)?

Answer:

θ = 240

and

cos(θ) = -0.5

Step-by-step explanation:

Theta is in the third quadrant, that meansit goes from 180 to 270 degrees

Then,

cos^2 (θ) =1/4

cos (θ) = ± 1/2

θ = arccos(0.5)

θ = 60

But in the third quadrant

θ = 180 + 60  = 240

θ = 240

and

cos(θ) = -0.5

We're looking for a model of the form

[tex]y=a\cos(b(x-c))+d[/tex]

[tex]a[/tex] is the amplitude, equal to half the difference between the maximum and minimum hours of daylight:

[tex]a=\dfrac{15.3-9.1}2=3.1[/tex]

[tex]b[/tex] determines the period of the cosine function. The period itself is [tex]\dfrac{2\pi}b[/tex], which we want equal to 365, so that

[tex]365=\dfrac{2\pi}b\implies b=\dfrac{2\pi}{365}[/tex]

(so that the value in the second box should be 365)

[tex]c[/tex] determines the horizontal shift of the cosine function. We'll come back to this in a moment.

[tex]d[/tex] represents the vertical shift of the function. The standard function is bounded between -1 and 1:

[tex]-1\le\cos x\le1[/tex]

Our new function has an amplitude of 3.1, so that

[tex]-3.1\le3.1\cos x\le3.1[/tex]

We want the range of values to fall between 15.3 and 9.1, so we want to pick [tex]d[/tex] such that

[tex]\begin{cases}-3.1+d=9.1\\3.1+d=15.3\end{cases}\implies d=12.2[/tex]

So the current model is

[tex]y=3.1\cos\left(\dfrac{2\pi}{365}x\right)+12.2[/tex]

[tex]c[/tex] represents the horizontal shift of the function. [tex]x=0[/tex] represents the first day of the year, which according to the current model tells us we should expect [tex]3.1\cos0+12.2=15.3[/tex] hours of daylight on the first day of the year. But this conflicts with the data. We want this maximum to occur on the 172nd day of the year, so we shift the model by this amount, and the model is

[tex]y=\boxed{3.1}\cos\left(\dfrac{2\pi}{\boxed{365}}}(x-\boxed{172})\right)+\boxed{12.2}[/tex]

ANSWER

[tex]{ (- 6745)}^{ \frac{1}{7} } [/tex]

EXPLANATION

If we have an exponential expression of the form:

[tex] { (- x)}^{ \frac{1}{n} } [/tex]

then, the result is a real number, if and only if n is an odd number.

We analyze the options and find out that,the first option is where n is odd, because we have n=7.

Hence the only option that is equivalent to a real number is

[tex] { (- 6745)}^{ \frac{1}{7} } [/tex]

The correct choice is A.

Real numbers encompass all positive and negative integers, fractions, and decimals excluding imaginary numbers. In the given options, options B depicting a set of positive integers and C depicting a decimal number are examples of real numbers.

In mathematics, a real number includes all positive and negative integers, fractions, and decimals without imaginary components. From the provided options, options B and C directly depict real numbers. Option B declares the values of x as a set of positive integers from 1 to 14.

While C represents a real number as a decimal 0.9417. To further understand, real numbers are embedded in our daily calculations, for instance, if you own 1 apple, spend $14, or measure a distance of 0.9417 km, these are all instances of real numbers.

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The answer is:

The airplane will travel 8800 feet in 10 seconds.

It's a conversion exercise, we need to be careful in order to solve it with no mistakes.

First:

We need to remember that 1 hour is equal to 60 minutes, and 1 minute is equal to 60 seconds, so, to calculate how many seconds are in one hour, we need to perform the following operation:

[tex]Time=1hour*\frac{60minutes}{1hour}*\frac{60seconds}{nminute}=3600seconds[/tex]

Second:

We need to convert from miles to feet, we need to remember that 1 mil is equal to 5280 feet.

So, solving we have:

[tex]Speed=600\frac{miles}{hour}*\frac{1hour}{3600seconds}*\frac{5280ft}{1mile}=880\frac{ft}{seconds}[/tex]

Now, calculating how many feet does it travel in 10 seconds, we have:

[tex]distance=speed*time\\\\distance=880\frac{ft}{seconds}*10seconds=8800ft[/tex]

We have that the airplane will travel 8800 feet in 10 seconds.

Have a nice day!

For this case we must solve the following linear equation:

[tex]- \frac {1} {4} x + 5 = \frac {3} {4}[/tex]

Subtracting 5 from both sides of the equation we have:

[tex]- \frac {1} {4} x = \frac {3} {4} -5\\- \frac {1} {4} x = \frac {3-20} {4}\\- \frac {1} {4} x = - \frac {17} {4}[/tex]

Multiplying by 4 on both sides of the equation:

[tex]-x = -17[/tex]

Multiplying by -1 on both sides of the equation we have:

[tex]x = 17[/tex]

Answer:

[tex]x = 17[/tex]

Answer: [tex]x=17[/tex]

Step-by-step explanation:

You need to solve for the variable "x":

The first step is to subtract 5 from both side of the equation, then:

[tex]-\frac{1}{4}x+5-5=\frac{3}{4}-5\\\\-\frac{1}{4}x=-\frac{17}{4}[/tex]

The final step is to multiply both sides of the equation by -4.

Therefore, the value of the variable "x" is the following:

[tex](-4)(-\frac{1}{4}x)=(-\frac{17}{4})(-4)\\\\x=17[/tex]

[tex]\log_96561=4[/tex]

Answer:

63 % for cats and 37 % for dogs

Step-by-step explanation:

Answer:

B just took it.

Step-by-step explanation:

The fact that all right angles can be bisected is not a postulate of Euclidean geometry.

Euclidean geometry is the classical form of geometry first described by Euclid in his work Elements. He gathered all the mathematical knowledge known to the Greeks at the time, today his work presents itself as the first known axiomatization in the history of mathematics.

Originally, it was only cultivated on a plane and in three-dimensional space, at the same time linking it with the physical world that it was supposed to describe, thus preventing the possibility of studying other varieties of geometry.

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[tex]\bf ~\hspace{7em}\textit{negative exponents} \\\\ a^{-n} \implies \cfrac{1}{a^n} ~\hspace{4.5em} a^n\implies \cfrac{1}{a^{-n}} ~\hspace{4.5em} \cfrac{a^n}{a^m}\implies a^na^{-m}\implies a^{n-m} \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ x\cdot 3^{-4}=32\implies x\cdot \cfrac{1}{3^4}=32\implies \cfrac{x}{81}=32\implies x=2592[/tex]

Answer:

x = 2592

Step-by-step explanation:

Equation: x * 3⁻⁴ = 32

Simplify: x/81 = 32

Multiply: x = 2592

[tex]\bf (\stackrel{x_1}{1}~,~\stackrel{y_1}{9})\qquad (\stackrel{x_2}{-3}~,~\stackrel{y_2}{16}) \\\\\\ slope = m\implies \cfrac{\stackrel{rise}{ y_2- y_1}}{\stackrel{run}{ x_2- x_1}}\implies \cfrac{16-9}{-3-1}\implies \cfrac{7}{-4}\implies -\cfrac{7}{4}[/tex]

Answer:

[tex]\huge\boxed{-\frac{7}{4}}[/tex]

Step-by-step explanation:

Slope formula

[tex]\displaystyle \frac{y_2-y_1}{x_2-x_1}[/tex]

[tex]\displaystyle\frac{16-9}{(-3)-1}=\frac{7}{-4}=-\frac{7}{4}[/tex]

Therefore, the slope is [tex]\displaystyle -\frac{7}{4}[/tex], [tex]\displaystyle -\frac{7}{4}[/tex] is the correct answer.

Answer:

9

Step-by-step explanation:

Common ratio is found by raking the second term and dividing by the first term

9/1 = 9

We can check by taking the third term and dividing by the second term

81/9 = 9

The common ratio is 9

Answer:

b

Step-by-step explanation:

Answer:

The length of the rectangular park is [tex]1.2\ mi[/tex] and the width of the rectangular park is [tex]0.3\ mi[/tex]

Step-by-step explanation:

Let

x ----> the length of the rectangular park

y ---> the width of the rectangular park

we know that

The perimeter is equal to

[tex]P=2(x+y)[/tex]

[tex]P=3\ mi[/tex]

so

[tex]3=2(x+y)[/tex] -----> equation A

[tex]x=4y[/tex] ----> equation B

substitute equation B in equation A and solve for y

[tex]3=2(4y+y)[/tex]

[tex]3=10y[/tex]

[tex]y=0.3\ mi[/tex]

Find the value of x

[tex]x=4(0.3)=1.2\ mi[/tex]

therefore

The length of the rectangular park is [tex]1.2\ mi[/tex] and the width of the rectangular park is [tex]0.3\ mi[/tex]

Final answer:

To determine the dimensions of a park with a 3-mile perimeter where the length is 4 times the width, we set up the equation 3 = 2l + 2w, substitute l = 4w into it, and solve for width and length. The calculations show the park is 1.2 miles long and 0.3 miles wide.

Explanation:

The student has asked for help to find the dimensions of a rectangular-shaped park with a 3-mile perimeter where the length is 4 times the width. To solve this, we will use the formula for the perimeter of a rectangle P = 2l + 2w, where P is the perimeter, l is the length, and w is the width.

Since we know the perimeter is 3 miles, we can set up the equation 3 = 2l + 2w. Because the length is 4 times the width, we can also say that l = 4w. Substituting into the first equation, we get 3 = 2(4w) + 2w, which simplifies to 3 = 10w. To find the width, we divide both sides by 10, resulting in w = 0.3 miles. Then, using l = 4w, we find that the length l is 1.2 miles.

Therefore, the dimensions of the park are 1.2 miles long and 0.3 miles wide.

Answer:

d

Step-by-step explanation:

im very smart (def did not get it wrong and it showed me the answer)

Answer:

Since, when a function f(x) is reflected across x-axis then resultant function is -f(x), and reflected across y-axis then resultant function is f(-x),

Also, In translation of f(x),

If the transformed function is,

g(x) = f(x+a)

If a is positive then function is shifted a unit left,

If a is negative then function is shifted a unit right,

While, if transformed function is,

g(x) = f(x) + a

If a is positive then function is shifted a unit up,

If a is negative then function is shifted a unit right,

Here, the given parent function is,

[tex]y=-x^2-1[/tex]

Hence, by the above explanation we can match the unction formula with the corresponding transformation, shown below,

1. [tex]y=-x^2-1[/tex]  : Reflected across the y-axis

2. [tex]y=-(x - 1)^2 - 1[/tex]  : Translated right by 1 unit

3. [tex]y= x^2 +1[/tex] : Reflected across the x-axis

4.[tex]y=-x^2[/tex]  : Translated up by 1 unit

5. [tex]y=-(x+ 1)^2 - 1[/tex]  : Translated left by 1 unit

6. [tex]y=-x2 - 2[/tex]  : Translated down by 1 unit

First, you must find the total number of people. Add together 32, 54, 78, 112, and 96 to get 372. Next, add the number of diabetic patients with the number of patients with eye problems (54 + 112 = 166).

Your fraction is now 116/372. Simplify this to get your answer, 29/93 or 0.31.

Answer:

Step-by-step explanation:

This is not a linear function. This is actually an exponential function.

Answer:

A

Step-by-step explanation:

trust me bro

Answer:

(-5,-2)

Step-by-step explanation:

because the point is 5 to the left of the origin and 2 down from the origin

The simplified formula for calculating the monthly lease payment for a car is the sum of the depreciation fee and the finance fee. These are calculated based on the car's initial cost, residual value, and the lease factor.

In the context of car leasing, the simplified formula used to calculate the monthly lease payment is: depreciation fee + finance fee. The depreciation fee is calculated by subtracting the car's expected residual value at the end of the lease from its initial cost (MSRP) and then dividing this by the number of months in the lease. The finance fee is calculated as the sum of the MSRP and the residual value, multiplied by the lease factor or money factor which is essentially the interest rate.

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Answer:

see explanation

Step-by-step explanation:

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

x²(2x² + 3x - 1) + 3x(2x² + 3x - 1) + 2(2x² + 3x - 1)

Distribute all 3 parenthesis

= 2[tex]x^{4}[/tex] + 3x³ - x² + 6x³ + 9x² - 3x + 4x² + 6x - 2

Collect like terms

= 2[tex]x^{4}[/tex] +9x³ + 12x² + 3x - 2

Answer:

2x^4+9x^3-7x^2-6x-2

Step-by-step explanation:

=2x^4+3x^3-x^2+6x^3+9x^2-3x-x^2-3x-2

Simplify

=2x^4+9x^3-7x^2-6x-2

Answer:

The output is 23

Step-by-step explanation:

we know that

f(x) ----> is the output

x ----> is the input

we have that

f(x)=3x-1

For x=8 (input)

Find the value of f(x) (output)

f(8)=3(8)-1=23

The output is 23

[tex]\bf (\stackrel{x_1}{1}~,~\stackrel{y_1}{4})~\hspace{10em} slope = m\implies -2 \\\\\\ \begin{array}{|c|ll} \cline{1-1} \textit{point-slope form}\\ \cline{1-1} \\ y-y_1=m(x-x_1) \\\\ \cline{1-1} \end{array}\implies y-4=-2(x-1)[/tex]

Answer:

Uhm, you can write anything. Most poems don't even have to have a rhyme in them.

Just think of anything that can make some since.

Answer:

Hey Buddy here is one of the rhyme I made

Hope it helps

Step-by-step explanation:

When we open a math book,

Rocky jumps in horror and says " Look!

What do you mean by f(x) and g(x)?

I think its worst than a T-Rex"

At that moment our class nerd says "Those are functions!

And they both have no distinctions"

The teacher being happy tells the nerd to explain it

We all wanted to quit but our teacher was strict.

He started off by telling that there different types of functions

like monomial, binomial, trinomial and polynomial functions.

But as soon as he was going to say his second sentence

The bell rang and that was the bell of independence.

Answer:

y-intercept is 4.

Step-by-step explanation:

Given,

Equation of the line,

[tex]y=\frac{4}{3}x+1[/tex]

∵ Equation of a line is y = mx + c, where m is the slope of the line,

By comparing,

The slope of the above line is [tex]\frac{4}{3}[/tex],

Let m' is the slope of the line perpendicular to above line,

[tex]\implies m'\times \frac{4}{3}=-1[/tex]

[tex]\implies m' = -\frac{3}{4}[/tex]

Now, the equation of a line passes through a point [tex](x_1,y_1)[/tex] is,

[tex]y-y_1=m(x-x_1)[/tex]

So, the equation of the perpendicular line having slope [tex]-\frac{3}{4}[/tex] and passes through ( 4,1) is,

[tex]y-1=-\frac{3}{4}(x-4)\implies y=-\frac{3}{4}x+3+1\implies y=-\frac{3}{4}x+4[/tex]

For y-intercept,

x = 0,

⇒ y = 4

Hence, the y-intercept of the perpendicular line is 4.

Answer:

g>5

Step-by-step explanation:

5g>25 Take this equation, using the division property of equality, divide both sides by 5, leaving you with

g>5

Answer:

g > 5

Step-by-step explanation:

Divide by 5 both sides.

Since there is no negatives the sign stays the same.

Answer:

1 solution

Step-by-step explanation:

This is a linear equation and has one solution

6x - 4 = x + 6 ( subtract x from both sides )

5x - 4 = 6 ( add 4 to both sides )

5x = 10 ( divide both sides by 5 )

x = 10 ← only 1 solution

Answer:

Step-by-step explanation:

6|x| + 25 = 15

6|x| = 15 - 25

6|x| = -10

|x| = - [tex]\frac{10}{6}[/tex]

By definition, the absolute value of any number must be positive, hence  | x| can never be negative, there is no solution.

Answer:300 cm2(in the case of rectangle)

Step-by-step explanation:

The question is ambiguous.Something is missing.what is the shape of the object is not told here.

But if you consider it a "rectangle",the angles will be right angles.

area of a rectangle=length×breadth

=20cm×15cm

=300 centimetre2

Answer: square centimeters

Step-by-step explanation:

Hi, the answer to the question is square centimeters.

The lengths of the picture are in centimeters. So, when you calculate the area of the picture that is a triangle you obtain square centimeters.

Mathematically speaking:

20cm x 15 cm =  300 square centimeters

By multiplying the same unit you obtain the square unit.

Feel free to ask for more if it´s necessary or if you did not understand something.

Answer:

13 is your answer

Step-by-step explanation:

x - 8.1 = 5.3

  +8.1    +8.1         Add 8.1 to both sides

x     =     13.4

Which if you want the whole number i'd be 13, Because if your rounding the 3, 4 won't bump the 3 up any because 4 isn't greater than 5.

Hope my answer has helped you!

Answer:

x=13

Step-by-step explanation:

A quick rough estimate could be obtained by adding 8 to both sides:

x = 5.3 + 8, or x = 13 (approx.)

The exact solution is x = 8.1 + 5.3 = 13.4 (which rounds down to 13).

Answer:

(2,1)

Step-by-step explanation:

So the first thing you want to do is substitute. You want to plug in the equation for y in for the y value above.

So you would do 3x+4(x-1)=10. As you can see we took the bottom equation and put it in for the top equation. We did this so we only have x s and no y s.

Now you would solve. You would distribute first. You would get 3x+4x-4=10. Now combine like terms. 3+4 is 7 so you would get 7x-4=10.The next thing you want to do is get the 7x by itself so move the 4.You would get 7x=14. Now divided both sides by 7 because you want to get the x by itself.

You would get x=2. Now for the y value just plug it in for an equation above. The easier one would be y=x-1. y=(2)-1 will equal 1. You write your final answer in (x,y) style. Your final answer will then be (2,1)

Answer:

Step-by-step explanation:

[tex]\left\{\begin{array}{ccc}3x+4y=10&(1)\\y=x-1&(2)\end{array}\right\\\\\text{Substitute (2) to (1):}\\\\3x+4(x-1)=10\qquad\text{use the distributive property}\\3x+4x-4=10\qquad\text{add 4 to both sides}\\7x=14\qquad\text{divide both sides by 7}\\x=2\\\\\text{put the value of x to (2):}\\\\y=2-1\\y=1[/tex]