Which set of polar coordinates names the same point as (-5.5) ? ZT O O A. (5, O B. (5:59) O 5 57 4 377 O c. -5 O D. 7T 5. )

Which Set Of Polar Coordinates Names The Same Point As (-5.5) ? ZT O O A. (5, O B. (5:59) O 5 57 4 377

Answers

Answer 1

Recall that the following points represent the same point as the point (x,θ)

[tex]\begin{gathered} (-x,\theta+\pi), \\ (-x,\theta-\pi), \\ (x,\theta+2n\pi)\text{.} \end{gathered}[/tex]

Now, notice that:

[tex]\frac{5\pi}{4}=\frac{4\pi}{4}+\frac{\pi}{4}=\pi+\frac{\pi}{4}\text{.}[/tex]

Therefore, the point:

[tex](5,\frac{5\pi}{4})[/tex]

represent the same point as the point

[tex](-5,\frac{\pi}{4})\text{.}[/tex]

Answer: Option B.


Related Questions

3. By elimination 2x - 3y =- 55x + 2y =16

Answers

By elimination, it means that we should apply algebraic operations so we find the value of one variable. So first, lets multiply the first equation by 5. We get

[tex]5\cdot(2x-3y)=5\cdot-5\text{ = 10x-15y = -25}[/tex]

Now, lets multiply by 2 the second equation

[tex]2\cdot(5x+2y)\text{ = 16}\cdot2\text{ = 10x+4y=32}[/tex]

With this two equations, lets subtract the second equation from the first equation

[tex]10x+4y-(10x-15y)\text{ = 32-(-25)}[/tex]

We get

[tex]19y\text{ = 57}[/tex]

If we divide y by 19 we get

[tex]y=\frac{57}{19}=3[/tex]

Now, using this value in the second equation we get

[tex]5x+2\cdot3\text{ = 16 }=5x+6[/tex]

If we subtract 6 on both sides, we get

[tex]16-6\text{ = 5x = 10}[/tex]

Finally, we divide by 5 on both sides and we get

[tex]x=\frac{10}{5}=2[/tex]

Find the probability of the event.If a single die is tossed once, find the probability of the following event. Rollinga 3 or a 5

Answers

ANSWER

1/3

EXPLANATION

If we have a fair die, the probability of rolling any of the numbers is the same. In this case, we want to know the probability of rolling a 3 or a 5, which is the sum of the probabilities of rolling each of these values,

[tex]P(3)=P(5)=\frac{1}{6}[/tex]

So,

[tex]P(3or5)=P(3)+P(5)=\frac{1}{6}+\frac{1}{6}=\frac{2}{6}=\frac{1}{3}[/tex]

Hence, the probability of rolling a 3 or a 5 is 1/3

The entire graph of the function h is shown in the figure below.Write the domain and range of h using interval notion.(a) domain=(b) range=

Answers

The graph of the function is defined for x greater than or equal to -2 and less than 3. So domain of the function is,

[tex]\lbrack-2,3)[/tex]

The value of the function lies between -2 and 3. The function value is greater than or equal to -2 and less than 3. So range of function is,

[tex](-2,3\rbrack[/tex]

Hi, simplify the following rational expression, if possible: x + 2/ x^2 = 4x + 4

Answers

Given:

[tex]\frac{x+2}{x^2-4x+4}[/tex]

To simplify the given rational expression, we first factor x^2-4x+4 by applying Perfect Square Formula as shown below:

[tex]\begin{gathered} a^2-2ab+b^2=(a-b)^2 \\ \end{gathered}[/tex]

Hence,

[tex]x^2-4x+4=x^2-2x(2)+2^2=(x-2)^2[/tex]

Now, we simplify the given expression:

[tex]\frac{x+2}{x^{2}-4x+4}=\frac{x+2}{(x-2)^2}[/tex]

Therefore, the answer is:

[tex]\frac{x+2}{(x-2)^{2}}[/tex]

(linear approximation calc !) The radius of a disc is 24 cm if the radius has a maximum error of 0.2 cm. estimate the relative percentage air in the calculated area the area of a circle = pi r ^2

Answers

Given:

The radius of the circular disk is 24cm.

The radius has a maximum error of 0.2 cm.

To find:

The area

Explanation:

Using the area of the circle,

[tex]A=\pi r^2[/tex]

The area of the disk is,

[tex]\begin{gathered} A=\pi\times24^2 \\ =576\pi cm^2 \end{gathered}[/tex]

If the radius is increased from 24 by 0.02, then the radius becomes, r = 0.02

The change in the calculated area will be,

[tex]\begin{gathered} \Delta A=Area\text{ of the cirlce with radius of 24.02-Area of the circle with radius of 24} \\ =\pi\times24.02^2-\pi\times24^2 \\ =576.96\pi-576\pi \\ =0.96\pi cm^2 \end{gathered}[/tex]

The relative percentage of area is,

[tex]\begin{gathered} \frac{\Delta A}{A}\times100=\frac{0.96\pi}{576\pi}\times100 \\ =0.0017\times100 \\ =0.17\text{ \%} \end{gathered}[/tex]

Final answer:

The maximum error in area is,

[tex]0.96\pi cm^2[/tex]

The relative percentage error in the area is 0.17%.

Use the expressions from the previous questions to determine Mary’s age.

Answers

The age of Mary is 15 years old.

To solve this, we have three expressions:

[tex]\begin{gathered} M=J+5 \\ J=T-28 \\ T=3H-1 \end{gathered}[/tex]

Where M is the age of Mary, J is the age of Jacob, T is the age of Uncle Tim and H is the age of Henry

Also teh problem give us an additional info, the age of Henry is 13. With this, we can replace the value of H in the thrid equation:

[tex]\begin{gathered} \begin{cases}H=13 \\ T=3H-1\end{cases} \\ \text{Then:} \\ T=3\cdot13-1=39-1=38 \\ T=38 \end{gathered}[/tex]

Now we can replace T in the second equation:

[tex]\begin{gathered} \begin{cases}T=38 \\ J=T-28\end{cases} \\ \text{Then:} \\ J=38-28=10 \\ J=10 \end{gathered}[/tex]

Finally, we can replace J in the first equation to get the age of Mary:

[tex]\begin{gathered} \begin{cases}J=10 \\ M=J+5\end{cases} \\ \text{Then:} \\ M=10+5=15 \end{gathered}[/tex]

Thus, the age of Mary is 15 years old.

Question 1 of 14, Step 1 of 10/19CorrectDetermine if the following expression is a polynomial.4 – 8x + x²AnswerKeyboaO Yes O No

Answers

Solution

Given

[tex]4-8x+x^2[/tex]

We want to determine if it's a Polynomial

A polynomial is an expression consisting of indeterminates (also called variables) and coefficients, that involves only the operations of addition, subtraction, multiplication, and non-negative integer exponentiation of variables.

Hence 4 - 8x + x^2 is a Polynomial

A rectangular prism is shown below.A formula for the volume of a rectangular prism V = Bh. The volume, V, of this prism is 600 cm³. Which expression can be used to find x, the width of the prism in centimeters? A: 600/15B: 600/8C: 600/(8)(15)D: (8)(8)(15)(15)/600

Answers

Volume of a rectangular prism = base length x width x heigth

Where;

Volume = 600 cm3

base length = 15

width = x

height = 8

Replacing:

600 = (15) (x) (8)

Isolate x

600/ (15)(8) = x

x = 600/ (8)(15)

option C

find the value of f (4)

Answers

we know that

f(4) is the value of the function f(x) when the value of x is equal to 4

so

For x=4

Look at the graph

The value of the function f(x) is equal to 3

therefore

f(4)=3

Measure the dimensions of all the walls of the bedroom in your home, in feet. Find the dimensions of any windows or doorways as well.

Answers

Explanation

we can fill up the dimensions as follow

Which is the graph of the solution set of -2x + 5y > 15?10 1310 138896421OT810x2468 10622-4Ox681010 138642X246810

Answers

To graph the solution set, first, we know that the border of the shaded area will be delimited by the dashed line:

[tex]-2x+5y=15.[/tex]

Now, to know if the shaded area will be on top or below the line, we evaluate the point (0,0):

[tex]-2(0)+5(0)=0<15,[/tex]

therefore, the origin is not a point of the solution set.

Answer:

Factor 64x3 + 27.(4x – 3)(16x2 – 12x + 9)(4x + 3)(16x2 - 12x + 9)(4x + 3)(16x2 + 12x + 9)(4x - 3)(16x2 + 12x + 9)

Answers

Answer

Option B is correct.

64x³ + 27 = (4x + 3) (16x² - 12x + 9)

Explanation

We are told to factorize

64x³ + 27

To do this, we use the factorization of (x³ + y³) as a guide. First of,

(x + y)³ = (x + y) (x + y)² = (x + y) (x² + 2xy + y²)

(x + y)³ = x³ + y³ + 3x²y + 3xy²

So, we can write

x³ + y³ = (x + y)³ - 3x²y - 3xy² = (x + y)³ - 3xy(x + y)

= (x + y) [(x + y)² - 3xy]

= (x + y) (x² + y² + 2xy - 3xy)

= (x + y) (x² - xy + y²)

So, comparing (64x³ + 27) with (x³ + y³), we can see that

64x³ = (4x)³

27 = (3)³

(64x³ + 27) = (4x)³ + 3³

x³ + y³ = (x + y) (x² - xy + y²)

(4x)³ + 3³ = (4x + 3) [(4x)² - (4x × 3) + 3²]

= (4x + 3) (16x² - 12x + 9)

Hope this Helps!!!

4. Write the equation of the line in SLOPE-INTERCEPT FORM that passes through the given points(4,2) and (0,6)

Answers

The slope intercept form equation is expressed as

y = mx + c

where

m represents slope

c represents y intercept

The formula for determining slope is expressed as

slope, m = (y2 - y1)/(x2 - x1)

From the information given,

y2 = 6, y1 = 2

x2 = 0, x1 = 4

Slope, m = (6 - 2)/(0 - 4) = 4/- 4

m = - 1

We would determine the y intercept, c by substituting m = - 1, y = 6 and x = 0 into the slope intercept equation. It becomes

6 = - 1 * 0 + c

6 = c

c = 6

The equation would be

y = - x + 6

The edge of a cube measures 11 m. Find the surface area.

Answers

In order to determine the surface area of the cube, use the following formula:

[tex]S=6a^2[/tex]

where a is the length of the side of a cube a = 11 m.

Replace the value of a into the formula for S:

[tex]S=6(11m)^2=726m^2[/tex]

Hence, the surface area of the given cube is 726m^2

Question 5 of 15, Step 1 of 14/15CorrectIfy is inversely proportional to x and y = -71 when x = 16, find yifx = 7. (Round off your answer to the nearest hundredth.)

Answers

Answer:

[tex]y=-31.06[/tex]

Step-by-step explanation:

Since y and x are inversely proportional, we'll have that:

[tex]y=\beta x[/tex]

For a given betha value. Since we have a pair of x and y values, we can plug them in the formula and find our particular value of betha, as following:

[tex]\begin{gathered} y=\beta x\rightarrow-71=\beta\times16\rightarrow\beta=-\frac{71}{16} \\ \end{gathered}[/tex]

This way, our formula would be:

[tex]y=-\frac{71}{16}x[/tex]

Plugging in x = 7,

[tex]\begin{gathered} y=-\frac{71}{16}x\rightarrow y=-\frac{71}{16}(7)\rightarrow y=-\frac{497}{16} \\ \\ \Rightarrow y=-31.06 \end{gathered}[/tex]

Simplify: 7a + 2a - a + 6b - 5b

Answers

We must simplify the following expression:

[tex]7a+2a-a+6b-5b[/tex]

From the expression, we see that we have terms with variable a and terms with variable b. In order to simplify the expression, we add the terms with a together (which sums up 8a), and we do the same for the terms with b (which sums up 1b):

[tex]\begin{gathered} 7a+2a-a+6b-5b \\ =(7a+2a-a)+(6b-5b) \\ =8a+b \end{gathered}[/tex]

The solution is: 8a+b

Pleaee help me draw this. Construct a tangent to the circle from point R.

Answers

solution

For this case the tangent line to the circle and the point should be:

The reason is because the tangent line and the point needs to touch the circle just one time

prove that 1+3+5+......2n-1=n²

Answers

As given by the question

There are given that the series

[tex]1+3+5+\cdots+(2n-1)=n^2[/tex]

Now,

For step 1:

Put n=1

Then LHS =1

And

[tex]\begin{gathered} R\mathrm{}H\mathrm{}S=(n)^2 \\ =(1)^2 \\ =1 \end{gathered}[/tex]

So,

[tex]\therefore L.H.S=R.H.S[/tex]

P(n) is true for n=1.

Now,

Step 2:

Assume that P(n) istrue for n=k

Then,

[tex]1+3+5+\cdots+(2n-1)=k^2[/tex]

Adding 2k+1 on both sides

So, we get:

[tex]1+3+5\ldots+(2k-1)+(2k+1)=k^2+(2k+1)=(k+1)^2[/tex]

P(n) is true for n=k+1

By the principle of mathematical induction P(n) is true for all natural numbers n.

Hence,

[tex]1+3+5+\cdots+(2n-1)=n^2[/tex]

For all n.

Hence proved.

Please help me!A bag holds 5 pounds of pet food. If Paul uses the 5 pounds of food to fill 6 plastic containers equally, how much pet food will each container hold?0.830.80.8030.83

Answers

We must divide the 5 pound bag in 6 different containers, therefore:

[tex]\frac{5}{6}=0.83[/tex]

Each container will hold 0.83 pet food

indicate whether (2, 7) is a solution of the given system.y is greater than or = -x+1Y is less than 4x+2

Answers

In order to determine if the point (2, 7) is a solution to the given system of inequalities we just have to replace 7 for y and 2 for x and see if the two inequalities are met, like this:

For y ≥ -x + 1

7 ≥ -2 + 1

7 ≥ -1

As you can see, 7 is greater than -1 then the first inequality is met.

For y < 4x + 2

7 < 4(2) + 2

7 < 8 + 2

7 < 10

As you can see, the second inequality is also met, then (2, 7) is a solution for the system of inequalities.

A support cable runs from the top of a telephone pole to a point on the ground 42.7 feet from its base. Suppose the cable makes an angle of 29.6 with the ground (as shown in the following figure).(a) Find the height of the pole. (Round the answer to the nearest tenth.) feet (b) Find the length of the cable. (Round the answer to the nearest tenth.) feet

Answers

We will draw a sketch to see the position of the cable

From the figure, we can use the tangent ratio to find the height

[tex]\frac{h}{42.7}=tan(29.6)[/tex]

By using the cross-multiplication

[tex]\begin{gathered} h=42.7tan(29.6) \\ \\ h=24.3\text{ feet} \end{gathered}[/tex]

a) The height of the pole is 24.3 feet to the nearest tenth

To find the length of the cable we will use the cosine ratio

[tex]cos(29.6)=\frac{42.7}{L}[/tex]

Switch L and cos(29.6)

[tex]\begin{gathered} L=\frac{42.7}{cos(29.6)} \\ \\ L=49.1\text{ feet} \end{gathered}[/tex]

b) The length of the cable is 49.1 feet to the nearest tenth

Evaluate 10y-15 for y=5

Answers

10 y - 15

y = 5

We replace 5 in the expression

10 * 5 - 15 =

50 - 15 = 35

____________________

Answer

35

Estimate the product by adjusting the larger factor to the compatible number 25 and then multiply. 27 x 8 = Think about counting by 25s.

Answers

You have the following product:

27 x 8

To estimate the product by rounding 27 to 25, you consider that 25 x 8 is the same as adding 25 eight times.

Then, you have:

25 x 8 = 25 + 25 + 25 + 25 + 25 +25 + 25 +25

25 x 8 = 50 + 50 + 50 + 50 each pair of 25's add up 50

25 x 8 = 100 + 100 each pair of 50's add up 100

25 x 8 = 200

Hence, an estimation of the given product is 200, by considering 27 rounded to 25.

Solve on the interval [0,27): RCŨsx+c05X +1 = ] T O 3 A. X= 27,x = x=57 4. 4 O B. X = 27,X = O c. X= 7T,X = 1 47T 3 T D. X= ET 6 6 NAMAN

Answers

ANSWER:

C.

[tex]x=\pi,x=\frac{2\pi}{3},x=\frac{4\pi}{3}[/tex]

STEP-BY-STEP EXPLANATION:

We have the following function:

[tex]2cos^2x+3cosx\: +1\: =\: 0[/tex]

Using the substitution method, we can calculate the value of x, like this:

[tex]\begin{gathered} u=\cos x \\ \text{ therefore:} \\ 2u^2+3u+1=0 \\ 3u=2u+u \\ 2u^2+2u+u+1=0 \\ 2u(u+1)+u+1=0 \\ (u+1)(2u+1)=0 \\ u+1=0\rightarrow u=-1 \\ 2u+1=0\rightarrow2u=-1\rightarrow u=-\frac{1}{2} \\ \text{ replacing:} \\ \cos x=-1\rightarrow x=\cos ^{-1}(-1)\rightarrow x=\pi \\ \cos x=-\frac{1}{2}\rightarrow x=\cos ^{-1}(-\frac{1}{2})\rightarrow x=\frac{2\pi}{3},\frac{4\pi}{3} \end{gathered}[/tex]

what expression is equivalent to 2y+7

Answers

The expression which is equivalent to the given expression (3y - 4) (2y + 7) + 11y - 9 is 6 y²+ 24y- 37

Define an expression.

A finite collection of symbols that are properly created in line with context-dependent criteria is referred to as an expression, sometimes known as a mathematical expression.

A phrase is considered a mathematical expression if it contains at least two numbers or variables and one or more mathematical operations. This mathematical procedure makes it possible to multiply, divide, add, or subtract quantities.

Presented expression = (3y - 4) (2y + 7) + 11y - 9

Solving the expression we get= 6y²+21y-8y-28+11y-9

                                                   = 6y²+24y-37

There for the correct response is that the given expression is equivalent to = 6y²+24y-37

To know more about expressions, visit:

https://brainly.com/question/14083225

#SPJ1

Hello may you please check me work for number 5

Answers

Surface area of a rectangular prism:

[tex]SA=2(wl+hl+hw)[/tex]

Substitute 1.2 for all of the variables in the formula:

[tex]SA=2[(1.2)(1.2)+(1.2)(1.2)+(1.2)(1.2)][/tex]

Using a calculator, you should get an answer of:

[tex]SA=8.64\text{ }yd[/tex]

The answer is that the surface area of this shape is 8.64 yards.

The table shows the weights of bananas at a grocery store. Complete the table so that there is a proportional relationship between the number of bananas and their weight.Number Of Bananas. Weight In Kilograms. 2 ? 0.72 15 ?

Answers

Let u make the first box x and the second box y.

If there is a proportional relationship between the number of bananas and their weights, it means that:

[tex]\frac{2}{x}=\frac{6}{0.72}=\frac{15}{y}[/tex]

We can take the first pair and solve for x as follows:

[tex]\begin{gathered} \frac{2}{x}=\frac{6}{0.72} \\ 6x=2\times0.72=1.44 \\ x=\frac{1.44}{6} \\ x=0.24 \end{gathered}[/tex]

We can solve for y in the same manner:

[tex]\begin{gathered} \frac{6}{0.72}=\frac{15}{y} \\ 6y=15\times0.72=10.8 \\ y=\frac{10.8}{6} \\ y=1.8 \end{gathered}[/tex]

Therefore, the boxes are filled as shown below:

describe and correct the error solution error a student made when graphing a linear equation y equals -3 / 4 x - 6

Answers

we have two points (0, 6) and (4, 3)

this can be represented as (x, y)

the equation of a straight line is

y = mx + c

slope = m = y2 - y1/ x2 - x1

x1 = 0, y1 = 6, x2 = 4 and y2 = 3

slope = 3 - 6 / 4 - 0

slope = -3/4

slope = -3/4

from the equation of a straight line

(y - y1) = m(x - x1)

y1 = 6 and x1 = 0

y - 6= -3/4(x - 0)

y - 6 = -3/4x + 0

y = -3/4x + 6

the error he made was that he used - 6 instead of +6 in the final answer

the odds against (E) are 23:77 Find the probability of (not E) :

Answers

We can rewrite the question as the probability of getting the event E is 23:77. Find the probability of getting the event not E.

The number 23:77 is a ratio and is it equivalent to:

[tex]\frac{23}{77}[/tex]

To get the probability of the event not-E, we can proceed as follows:

[tex]1-\frac{23}{77}=\frac{77}{77}-\frac{23}{77}=\frac{53}{77}\approx0.7013[/tex]

So the probability for the event not-E is about 53/77 or 0.7013 (or a little more than 70%).

I do not understand the problem on how to to write an equation.

Answers

Given a line passes through the point (-4,6) and has a slope of 3

We will write the equation of the line in point-slope from

The formula of the point-slope form will be as follows:

[tex]y-k=m(x-h)[/tex]

Where (h, k) is the point that lies on the line and (m) is the slope

From the given:

m = 3

h = -4

k = 6

Substitute into the formula

so, the answer will be:

[tex]y-6=3(x+4)[/tex]

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