Perform the following division and write the quotient in trigonometric form. Write the magnitude in exact form. Write the around it to two decimal places if necessary.8i4 + 5i

Perform The Following Division And Write The Quotient In Trigonometric Form. Write The Magnitude In Exact

Answers

Answer 1

SOLUTION

The given complex expression is:

[tex]\frac{-8i}{4+5i}[/tex]

Rationalize the denominator

This gives

[tex]\begin{gathered} \frac{-8i}{4+5i}\times\frac{4-5i}{4-5i} \\ =\frac{-32i-40}{16+25} \\ =-\frac{40}{41}-\frac{32i}{41} \end{gathered}[/tex]


Related Questions

A basket holds m apples you pick 2n-3 apples and your friends picks n+4 how many baskets do you need to carry all the apples.

Answers

Answer: The number of baskets = (3n+1)/m

Step-by-step explanation:

The total number of apples picked:

yours (2n-3)  + your friend (n+4)

Divide the combined total by the number in one basket (m):

((2n-3)+(n+4))/m

Simplify:

(3n+1)/m

(2, y) for all real y

[if solved and correct give 30 points+ brainliest]

Answers

Answer:

You actually cannot find Y using this knowledge!

Step-by-step explanation:

( 2, y ) It only shows how X is 2, you need more information to find y. If you can respond, try to give me more information, I am willing to help!

Wha What is 12 tens in standard form

Answers

12 tens = 12 x 10 = 120

Write a function rule to model each situation.
1 You are starting a yard-care business. You
decide to charge a flat fee of $15 plus a rate
of $8 per hour. Write a function rule in which
x is the number of hours and y is the total
amount you charge.

Answers

The function rule of the scenario is f(x) = 15 + 8x

How to determine the function rule?

From the question, the given parameters are:

Flat fee = $15

Rate = $8

To determine the function rule of the scenario, we make use of the following template equation

f(x) = Flat fee + Rate * Number of hours

Where

f(x) = total and x = number of hours

So, we have

f(x) = Flat fee + Rate * x

This gives

f(x) = 15 + 8x

Hence, the function rule is f(x) = 15 + 8x

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One of the legs of a right triangle measures 13 cm and the other leg measures 11 cm.
Find the measure of the hypotenuse. If necessary, round to the nearest tenth.

Answers

Answer:

17.03 cm

Step-by-step explanation:

Use the Pythagorean theorem, which states a^2+b^2=c^2. 13^2+11^2=290, sqrt290 cannot be simplified down into a whole number, therefore the next closes rounded to the nearest tenth is 17.03.

A trapezoid has bases 4 and 12 and area of 40m^2 find the height

Answers

Step 1

State the formula for the area of a trapezoid

[tex]\begin{gathered} The\text{ area of a trapezoid=(}\frac{a+b}{2})\times height(h) \\ \text{Where a= base 1=4}m \\ b=\text{base 2=12m} \\ \text{The area of the trapezoid=40m}^2 \end{gathered}[/tex]

Step 2

Find the height

[tex]\begin{gathered} 40=(\frac{4+12}{2})\times h \\ 40=\frac{16}{2}\times h \\ 80=16h \\ h=\frac{80}{16} \\ h=5m \end{gathered}[/tex]

Hence, the height = 5m

How do you simplify (9^12)^7 is it
9^84
81^84
81^19
9^19

Answers

(9¹²)⁷

Use the rules of exponents to simplify the expression. To raise a power to another power, multiply the exponents.

9¹² ˣ ⁷

Multiply 12 by 7.

9⁸⁴

Answer: 9^84 is the answer!

Step-by-step explanation:

the following equation is used by scientists to relate the pressure, volume, amount and temperature of gas solve for r in terms of p,v,n and t

Answers

The equation is PV = nRT.

What is a ideal gas law?

The calculations for the ideal gas law are comparison of the Pressure and Volume of gas based upon amount and temperature.

The basic formula is PV = nRT where

P = Pressure in atmospheres (atm)

V = Volume in Liters (L)

n = number of moles (mol)

R = the Ideal Gas Law Constant

T = Temperature in Kelvin (K)

The value of n is the amount of the gas measured as moles.

One may need to convert a mass to moles by dividing the given mass of the gas by the molar mass of the gas to get moles.

Hence, The equation is PV = nRT.

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Select the correct answer.What is the solution to this equation?loge + + log 3 = log (+ + 1)OA1 =IO HICOB.1 =O C.सेNICOOD. r = 1

Answers

Given the equation:

[tex]\log _6x+\log _63=\log _6(x+1)[/tex]

Let's solve for x.

To find the solution, take the following steps:

Step 1:

Apply the product property of logarithm to the left side of the equation:

[tex]\begin{gathered} \log _6(x\ast3)=\log _6(x+1) \\ \\ \log _6(3x)=\log _6(x+1) \end{gathered}[/tex]

Step 2:

Eliminate the log on both sides

[tex]\begin{gathered} 3x=(x+1) \\ \\ 3x=x+1 \end{gathered}[/tex]

Step 3:

Subtract x from both sides

[tex]\begin{gathered} 3x-x=x-x+1 \\ \\ 2x=1 \end{gathered}[/tex]

Step 4:

Divide both sides by 2

[tex]\begin{gathered} \frac{2x}{2}=\frac{1}{2} \\ \\ x=\frac{1}{2} \end{gathered}[/tex]

Therefore, the solution to the given equation is:

[tex]x=\frac{1}{2}[/tex]

ANSWER:

[tex]\text{ B. x = }\frac{1}{2}[/tex]

1/6 (x-3) = 1/3 (x+2)

Answers

The value of x in the equation given as 1/6(x - 3) = 1/3(x + 2) is 7

How to evaluate the equation?

The equation is given as

1/6(x - 3) = 1/3(x + 2)

From the question, we can see that the equation is a linear equation with one variable

As a general rule: linear equations are equations that have constant average rates of change.

We start by multiplying both sides of the equation by 6

So, we have the following equation

6 * 1/6(x - 3) = 1/3(x + 2) * 6

Next, we evaluate the products

So, we have the following equation

x - 3 = 2x + 4

Next, we collect the like terms

So, we have the following equation

2x - x = 3 + 4

Evaluate the like terms in the above equation

x = 7

This means that the solution of the equation is 7

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The management of the UNICO department store has decided to enclose a 903 ft2 area outside the building for displaying potted plants and flowers. One side will be formed by the external wall of the store, two sides will be constructed of pine boards, and the fourth side will be made of galvanized steel fencing. If the pine board fencing costs $7/running foot and the steel fencing costs $4/running foot, determine the dimensions of the enclosure that can be erected at minimum cost.

Answers

The dimensions of the enclosure that can be erected at minimum cost are 21.25 feet by 42.50 feet

How to determine the dimensions of the enclosure that guarantees the minimum cost

From the question, the given parameters are

Area = 903 square feet

Shape = rectangle

From the question, we understand that:

One side of the area would be enclosed by the external wall of the store

If the dimensions of the area are Length (L) and Width (W), then we have

Area = LW

Perimeter = 2L + W

Rewrite as

A = LW

P = 2L + W

Substitute 903 for A in A = LW

LW = 903

Make W the subject

W = 903/L

Substitute W = 903/L in P = 2L + W

P = 2L + 903/L

Differentiate the equation

So, we have

P' = 2 - 903/L²

Set to 0

2 - 903/L² = 0

So, we have

903/L² = 2

This gives

L² = 903/2

Divide

L² = 451.5

Take the square roots

L = 21.25

Substitute L = 21.25 in W = 903/L

W = 903/21.25

Evaluate

W = 42.50

Hence, the dimensions of the enclosure are 21.25 feet by 42.50 feet

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Which function has a minimum of -4?
A. y = (x - 5)² – 4
B. y = -(x-4)² - 5
C. y = (x-4)² +5
D. y = -(x - 5)² + 4

Answers

I think it is c but I’m not sure

my daughter is working on expression problems. i cant remember how to do this...the problem is 12(3y+x)please help me tell her how to write and solve this.

Answers

EXPLANATION

Given the expression 12(3y+x).

Let's solve it:

Applying the distributive property:

12*3y + 12*x

Multiplying like terms:

36y + 12x

The answer is 36y + 12x

To estimate the height of a stone figure Anya holds a small square up to her eyes and walks backwards from the figure she stops when the bottom of the figure aligns with the bottom edge of the square and the top of the figure aligns with the top edge of the square her eye level is 1.84m from the ground she is 3.50m from the figure what is the height of the figure to the nearest hundredth of a meter

Answers

SOLUTION

Let us make a sketch that will help us solve the question

From the image I provided, let the Height of the figure be H.

Then this means that the height of the figure H is

[tex]H=x+1.84[/tex]

Note that I have splitted the triangle into two.

Now, we need to find the two acute angles

[tex]\begin{gathered} \alpha\text{ and }\theta\text{ in the bigger triangle.} \\ \text{Note that }\alpha+\theta+90^o=180^o\text{ (sum of angles in the big triangle)} \end{gathered}[/tex]

Now, from the triangles splitted in the right side, both are right-angles just like the first (biggest) triangle.

So we will use the trig-ratio, SOHCAHTOA to find the acute angles.

From the smallest triangle in the image,

[tex]\begin{gathered} \tan \alpha=\frac{opposite}{\text{adjacent }} \\ \tan \alpha=\frac{3.5}{\text{1.84 }} \\ \alpha=\tan ^{-1}\frac{3.5}{\text{1.84 }} \\ \alpha=62.27^o \end{gathered}[/tex]

Now, the second acute angle becomes

[tex]\begin{gathered} \text{ }\alpha+\theta+90^o=180^o \\ 62.27+\theta+90=180 \\ \theta+152.27=180 \\ \theta=180-152.27 \\ \theta=27.73^o \end{gathered}[/tex]

The other triangle that is the bigger one which was splitted has opposite side of 3.5m and adjacent side x, hence

[tex]\begin{gathered} \tan \theta=\frac{opposite}{\text{adjacent}} \\ \tan 27.73=\frac{3.5}{x} \\ x\times\tan 27.73=3.5 \\ x=\frac{3.5}{\tan 27.73} \\ x=6.65804m \end{gathered}[/tex]

Now H becomes

[tex]\begin{gathered} H=x+1.84 \\ H=6.65804+1.84 \\ H=8.49804 \end{gathered}[/tex]

Hence, the height of the figure is 8.50 m to the nearest hundreth

I'll give brainliest!

Answers

The square roots would not be between 9 and 10 is [tex]\sqrt{80}[/tex].

[tex]\sqrt[]{80}=8.944\\ \sqrt[]{90}=9.486\\ \sqrt[]{95}=9.746\\ \sqrt[]{88}=9.380[/tex]

What are square roots?

The opposite of squaring an integer is finding its square root. The result of multiplying a number by itself yields its square value, whereas the square root of a number may be found by looking for a number that, when squared, yields the original value. It follows that a, a = b if "a" is the square root of "b." Every integer has two square roots, one of a positive value and one of a negative value because the square of any number is always a positive number. For instance, the square roots of 4 are both 2 and -2. However, the square root of a number is typically only expressed as the positive value.

The value of a number's power 1/2 is the number's square root. It is the number whose product by itself yields the original number, to put it another way. It is symbolized by the character "." The number behind the square root sign is referred to as the radicand, whereas the square root symbol itself is known as a radical.

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PLEASE HURRY ASAP
What is the product of (−4)(23)(−7)?

Answers

Answer:

644

Step-by-step explanation:

-4x23=-92

-92x-7=644

hope this helped :)

Answer:

644

Step-by-step explanation:

if you multiply -4 by 23 it equals -92 and then if you multiply -92 by -7 it comes out to a positive 644 because if multiplying a negative by a negative it becomes a positive.

thank you for your question and let me know if it is right or wrong

blessings!

How does slavery and oppression of other people impact you?

Answers

Slavery and oppression of other people impact others as it brings about discrimination and fear.

What is slavery?

In the olden days, slavery was so lucrative that the Mississippi River valley produced more millionaires per capita than any other region of the country. With cash crops like tobacco, cotton, and sugar cane, the southern states of America developed into the country's economic engine.

In Africa, the slave trade had a terrible impact. A culture of lawlessness and violence was encouraged by the financial incentives provided to warlords and tribes to participate in the slave trade. Economic and agricultural development in a large portion of western Africa was virtually impossible due to depopulation and a persistent fear of enslavement.

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What is the value of x in the geometric sequence x, 3, — ‚ .A. -27B. -9C. -1D. -3

Answers

Recall that in a geometric sequence, whenever we take one value of the sequence and divide it by the next number of the sequence, we would get a constant number unique to that sequence. If we take the first and second numbers and calculate the ratio, we get

[tex]\frac{x}{3}[/tex]

if we do that with the second and third numbers, we get

[tex]\frac{3}{\text{ -}\frac{1}{3}}=\text{ -}\frac{3\cdot3}{1\cdot1}=\text{ -9}[/tex]

this two numbers should be equal. So we get

[tex]\frac{x}{3}=\text{ -9}[/tex]

if we multiply both sides by 3, we get

[tex]x=3\cdot\text{ -9= -27}[/tex]

so option A is the correct option.

I need help graphing this piecewise function!

Answers

The piecewise function on the graph is,

f(x) = {  1 -3x ; if x ≤ 2

        { 4-x    ; if x > 2

The graph of a piecewise function is given. The left function is defined on the interval x ≤ 2 and the right function is defined on the interval x > 2.

To find the functions we need two points on each function since both functions are straight lines.

First we will find the left function defined on x ≤ 2.

So the two points are (x₁, y₁) = (0,1) and (x₂, y₂) = (2, -5).

Now slope of the left function, m₁ = (y₂ - y₁)/(x₂ - x₁)

                                                        = -5 - 1/2 - 0

                                                        = -6/2

                                                        = -3

So the equation of the left function is,

y - y₁ = m(x-x₁)

⇒ y - 1 = -3(x-0)

⇒ y = 1 -3x

Thus the left function is f(x) = 1 -3x

Consider the right function.

The two points on the graph of the right function are (x₁, y₁) = (4,0) and (x₂, y₂) = (6, -2).

So slope of the second function, m₂ = (y₂ - y₁)/(x₂ - x₁)

                                                            = -2 - 0/6-4

                                                            = -2/2

                                                            = -1

Now equation for the right function is,

y - y₁ = m(x-x₁)

⇒ y - 0 = -1(x-4)

⇒ y = 4 -x

So the right function is f(x) = 4-x

Hence the piecewise function is,

f(x) = {  1 -3x ; if x ≤ 2

        { 4-x    ; if x > 2

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5/6x+1/12= 15 1/3+1/3xsolve for x

Answers

Answer:

x = 61/2 = 30.5 = 60 1/2

Step-by-step explanation:

We have:

[tex]\frac{5}{6}x+\frac{1}{12}=15+\frac{1}{3}+\frac{1}{3}x[/tex]

We have to find the Least Common Multiple to solve this question:

[tex]\begin{gathered} \frac{2\cdot5x+1=12\cdot15+4+4x}{12} \\ \frac{10x+1=180+4+4x}{12} \\ 10x+1=180+4+4x \\ 10x-4x=180+4-1 \\ 6x=183 \\ x=\frac{183}{6} \\ x=\frac{61}{2}=30.5=30\frac{1}{2} \end{gathered}[/tex]

Distributive property -(6v-4u-1)

Answers

STEP - BY - STEP EXPLANATION

What to do?

Apply the distributive property on the given expression.

Given:

[tex]-\left(6v-4u-1\right)[/tex]

Step 1

Explain what the distributive property mean.

Distributing -1 implies multiplying -1 by each term.

Step 2

Apply the distributive property.

[tex]-\left(6v-4u-1\right)=-6v+4u+1[/tex]

ANSWER

-6v + 4u +1

I have a calculus question about limit functions. Pic included.

Answers

Answer:

Based on the results above, the slope of the tangent line to the curve at P(25,10) is 0.1.

Explanation:

P(25, 10) lies on the curve:

[tex]y=\sqrt{x}+5[/tex]

Q is the point (x, √x+5).

For any value of x, the slope of the secant line PQ is determined using the formula:

[tex]\text{ Slope of secant PQ}=\frac{(\sqrt{x}+5)-10}{x-25}[/tex]

(a)When x=25.1

[tex]\text{Slope of secant PQ}=\frac{(\sqrt{25.1}+5)-10}{25.1-25}=0.0999[/tex]

(b)When x=25.01

[tex]\text{Slope of secant PQ}=\frac{(\sqrt{25.01}+5)-10}{25.01-25}=0.09999[/tex]

(c)When x=24.9

[tex]\text{Slope of secant PQ}=\frac{(\sqrt{24.9}+5)-10}{24.9-25}=0.1001[/tex]

(d)When x=24.99

[tex]\text{Slope of secant PQ}=\frac{(\sqrt{24.99}+5)-10}{24.99-25}=0.10001[/tex]

Based on the results above, the slope of the tangent line to the curve at P(25,10) is 0.1.

Graph the line that has an x-intercept at (1, 0) and a y-intercept at (0, - 4). What is the slope of this line?

Answers

i think the anwer to rhis question is a 4,-0 10

Convert the following angle from degrees to radians. Express your answer in simplestform.285°

Answers

Answer:

19π/12

Explanation:

We know that

180 degrees = π radians

and we are asked

285 degrees = ? radians?

This can be treated as a ratio problem by saying that

[tex]\frac{180}{\pi}=\frac{285}{x}[/tex]

where x is the angle in radians.

Cross multpication gives

[tex]180x=285\pi[/tex]

dividing both sides by 180 gives

[tex]x=\frac{285\pi}{180}[/tex]

[tex]x=\frac{19}{12}\pi[/tex]

where we have used the fact that 285/12 = 19/12.

Answer:
4.97 radians (or 5 radians if rounding)

Explanation:
The formula for converting degrees to pi is (a) x pi/180
Plugging in 285 it becomes
285 x pi/180 =
And when we use a calculator to find it you will get 4.97 or 5 radians

PLS HELP ASAP WILL GIVE BRAINLIST

Answers

The values a = 10 and b = -6  will make the quadrilateral QRST a parallelogram

What values of a and b will make QRST a parallelogram?

For the quadrilateral QRST to be a parallelogram, the diagonal lines TR and QS divide each other into two equal parts at P. Therefore, we can say:

For diagonal line QS, QP = PS:

-a + 27 = -6a + 77

-a + 6a = 77 -27

5a = 50

a = 50/5

a = 10

For diagonal line TR, TP = PR:

2b + 24 = -8b - 36

2b + 8b = -36 - 24

10b = -60

b = -6

Therefore, the value of a and b that will make the quadrilateral QRST a parallelogram is a = 10 and b = -6.

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Simplify the complex rational expression. When typing your answer for the numerator and denominator be sure to type the term with the variable first with no spaces between characters. If an exponent is needed use the carrot key (^) by pressing shift and 6 at the same time.\frac{\left(\frac{2}{a}+\frac{7}{b}\right)}{b}The numerator is AnswerThe denominator is Answer

Answers

The given expression is

[tex]\frac{(\frac{2}{a}+\frac{7}{b})}{b}[/tex]

To add 2 fractions we have to give them the same denominators

In the up part (numerator) we have 2 different denominators a and b

Then the common denominator of the 2 fractions must be the product of them

[tex]\frac{2}{a}+\frac{7}{b}=\frac{2b}{ab}+\frac{7a}{ab}=\frac{2b+7a}{ab}[/tex]

Then the fraction will be

[tex]\frac{\frac{2b+7a}{ab}}{b}[/tex]

Now, we will multiply the denominator of up by the denominator of the first fraction (ab x b)

[tex]\frac{\frac{2b+7a}{ab}}{b}=\frac{2b+7a}{b(ab)}[/tex]

Multiply b by b to simplify, then

[tex]\frac{2b+7a}{b(ab)}=\frac{2b+7a}{ab^2}[/tex]

The numerator is 2b + 7a

The denominator is ab^2

The average number of babies born at a private hospital's maternity wing is 6 per hour. What is the probability that three babies are born during a particular 1-hour period in this maternity wing?

Answers

If the average number of babies born at a private hospital's maternity wing is 6 per hour. The probability that three babies are born during a particular 1-hour period in this maternity wing is 0.09.

How to find the Probability?

Mean = 6 per hours

Number of babies = 3 babies

Hence,

Now let determine the probability

Let x represent the probability

Pr(X=3) = e^-6 × 6^3 ÷ 3!

Pr(X=3) =0 .535410 ÷ 6

Pr(X=3) = 0.089

Pr(X=3) =0.09 (Approximately)

Therefore we can conclude that 0.09 is the probability.

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during the winter olympics the us curling team scored 2 points more than the canadian team. the canadian curling team scored 4 points more than the norwegian team. altogether the three teams scored a total of 208 point. how many points did the canadian team scored?

Answers

Answer:

70 points

Step-by-step explanation:

u = US points

c = Canadian points

n = Norwegian points

u = c + 2

n = c - 4

208 = u + c + n

208 = ( c + 2 ) + c + ( c - 4 ) = 3c - 2

Isolate c:

208 = 3c - 2

210 = 3c

c = 70

70 points
208-4-4-2= 198

198/3 =66

66+4=70

What value of x satisfies the equation 4x + 2 = 22?
A 3.5
B 5.0
C 6.0
D 7.5

Answers

Answer:

B

Step-by-step explanation:

4x + 2 = 22 ( subtract 2 from both sides )

4x = 20 ( divide both sides by 4 )

x = 5

4x+2=22
Subtract 2 on both sides so your left with
4x=20
Divide 4 on both sides
X = 5

Easy way to do this is 4 times 5 is 20 , ( that’s quick math) and then add 2 which gives you 20.

I hope this helps , have a good day :)

I NEED HELPPPPPPPPP HELPPP MEEEE

Answers

a) triangle with measurement 1/2 of the original measurement.

b)  rhombus with measurement  2 times the original measurement.

c) parallelogram with measurement 1/4 of the  original measurement.

The polygon is 2- dimensional figure and is any closed curve made of continuous edges also called the sides without intersecting each other,  the corner of a  polygon is called the vertices, the are of basically two types regular and irregular, whereas The scale factor a polygon the ratio of one side of a polygon to the comparing side of the other is called the scale factor. The proportion of all parts of a polygon, including diagonals,  perimeter, and heights is the same as the proportion of the sides.

a) the given scale factor is 1/2  and, we need to construct a scale copy of the triangle having sides measurements 1/2 of the original measurements.

b) the new polygon must have the measurements 2 times the original measurements of the polygon .

c) the new polygon must have dimensions 1/4 of the dimensions of the original measurements.

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The hypotenuse of a right triangle is four times the length of one of the legs. The length of the other leg is sqrt(240) feet. Find the lengths of the leg and hypotenuse What concept is essential to understand how the earth-moon-sun system works?A. GravityB. The number of moons around each planetC. Planetary motionD. Elliptical orbit a spotlight on the ground is shining on a wall away. if a woman 2m tall walks from the spotlight toward the building at a speed of 0.6 m/s how fast is the length of her shadow on the building decreasing when she is 2m from the building? a boy is running north with a speed of 5 m/s on a large, horizontal frozen lake. the coefficient of friction (both kinetic and static) between his shoes and the ice is ? when water is warmed by the sun, it ______ what function is represented in the table ?- y = 3 (4x )- y = 2 ( .25x )- y = 4 ( .25 ) x - y = 4 ( 3x ) I have an english assignment on the first chapter in The Round House by Louise Erdrich. II can send each page if needed just DM Enter the ratio as a fraction in lowest terms6 ft to 78 in. distributor claims that the chance that any of the three major components of a computer (cpu, monitor, and keyboard) is defective is 3%. cal the chance that all components work in a computer set. 30 POINTS!! PLEASE HELP ASAP!! Consider the function whose input value is time of day and whose corresponding output value is temperature at that time of day, rounded to the nearest degree. Is this a one-to-one function? Explain why or why not. In UVW, \overline{UW} UW is extended through point W to point X, \text{m}\angle UVW = (3x+16)^{\circ}mUVW=(3x+16) , \text{m}\angle WUV = (2x+8)^{\circ}mWUV=(2x+8) , and \text{m}\angle VWX = (8x-18)^{\circ}mVWX=(8x18) . Find \text{m}\angle WUV.mWUV. If the 20th term is -40 and your 28th term is -73, what will be the first term Four friends use a spinner to decide the luckiest person. Who is more likely to be the luckiest person? Similarities between Tigris and Euphrates civilizations A wealthy businessman invests $10,000 and expects a 6.75% rate of return annually. How many years will it take the investment to reach $15,000 in value?Round your answer to the nearest number of years. Question 2 of 10Find f(3) if f(x)=x^3+2x-x-1 What type of poll did literary digest use to predict the popular vote in presidential elections?. a mixture contains only nacl and fe(no3)3. a 0.456 gram sample of the mixture is dissolved in water, and an excess of naoh is added, producing a precipitate of fe(oh)3. the precipitate is filtered, dried and weighed. its mass is 0.107 g. calculate the mass percent of fe(no3)3 in the sample. whats the least common denominator of 5/7 and 4/5