2. If ¡2x+3 = i, where i = V-1, then which of the
following is a solution for x?
(1) x = 16
(3) x = 11
(2) x = 10
(4) x = 14

Answers

Answer 1

I assume you mean the equation

[tex]i^{2x+3} = i[/tex]

Since i = √(-1), we have i⁴ = 1 and so i⁵ = i. Then 2x + 3 must be some multiple of 5.

Now just check for which of the given choices that this holds:

x = 16   ⇒   2x + 3 = 35   (yes)

x = 11   ⇒   2x + 3 = 25   (yes)

x = 10   ⇒   2x + 3 = 23   (no)

x = 14   ⇒   2x + 3 = 31   (no)


Related Questions

I need help, what is 9^-2+181-69? this is math

Answers

Answer:

193

Step-by-step explanation:

9^2 = 81+181=262-69= 193

3. The value of a car in relation to the number of miles driven is given by the linear
function y = -9x + 55000.
a. Interpret the meaning of the rate of change and initial value for the linear function.

Answers

Answer:

General form of a linear equation:  [tex]y=mx+b[/tex]

(where m is the slope and b is the y-intercept)

A linear equation has a constant rate of change which is represented by the slope (m).  It is the rate at which one quantity is changing with respect to another quantity.

Question 3

Part (a)

Given equation:  [tex]y=-9x+55000[/tex]

where:

y = value of car (in dollars)x = number of miles driven

The rate of change (slope) is -9 and represents that for every 1 mile driven, the value of the car decreases by $9.

The initial value is the y-intercept (b) as this is the value when x = 0.

Therefore, the initial value of car is $55,000.

Part (b)

To find the number of miles at which the car be valued at $35,002, set the equation to $35,002 and solve for x:

[tex]\implies -9x+55000=35002[/tex]

[tex]\implies -9x=35002-55000[/tex]

[tex]\implies -9x=-19998[/tex]

[tex]\implies x=\dfrac{-19998}{-9}[/tex]

[tex]\implies x=2222[/tex]

Therefore, the car will be valued at $35,002 after 2,222 miles.

Question 4

Given equation:  [tex]y=0.39x+2.55[/tex]

where:

y = price of carrots (in dollars)x = weight (in oz)

The rate of change (slope) is 0.39 and represents that for every increase of 1 oz of weight in carrots, the price of the carrots increases by $0.39

The initial value is the y-intercept (b) as this is the value when x = 0.

Therefore, the initial cost of the carrots is $2.55.

Part (b)

To find the weight of carrots you can buy for $6.06, set the equation to $6.06 and solve for x:

[tex]\implies 0.39x+2.55=6.06[/tex]

[tex]\implies 0.39x=6.06-2.55[/tex]

[tex]\implies 0.39x=3.51[/tex]

[tex]\implies x=\dfrac{3.51}{0.39}[/tex]

[tex]\implies x=9[/tex]

Therefore, you can buy 9 oz of carrots for $6.06

Part (c)

To find out how much it costs to buy 21 oz of carrots, substitute x = 21 into the equation and solve for y:

[tex]\implies y=0.39(21)+2.55[/tex]

[tex]\implies y=10.74[/tex]

Therefore, it costs $10.74 to buy 21 oz of carrots.

How many different outcome pairs are possible from rolling a sixteen-sided and a twenty-sided
dice at the same time?

Answers

The number of the possible combinations from rolling a sixteen-sided and a twenty-sided dice at the same time is 320.

What is the combination?

The arrangement of the different things or numbers in a number of ways is called the combination.

The possible outcomes for dice with 16 sides:-

{ 1,2,3,4,5,6,...............16}

The possible outcomes for dice with 20 sides:-

{ 1,2,3,4,5,6,...............20}

So the number of the possible pairs will be:-

=   16   x    20

=   320  pairs.

Therefore the number of the possible combinations from rolling a sixteen-sided and a twenty-sided dice at the same time is 320.

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Please help me on this my moms mad at m e because i dont know

Vicky has a spinner divided into 9 equal sections that are labeled 1 though 9. She wants to compare the theoretical probability and the experimental probability of spinning an odd number. She spins the spinner 10 times and records the results in this list.

{2, 4,​ 1, 8, 7, 5, 3, 4, 1, 9}

**Note - There are 3 answers. You must select 3 answers.**

The theoretical probability of spinning an odd number is equal to ______. The experimental probability of spinning an odd number is equal to ______. Therefore, the theoretical probability of spinning an odd number is _____ the experimental probability of spinning an odd number.

Select 3 correct answer(s)
Question 7 options:

1/5


5/9


2/3


3/5


1/2


less than


greater than

Answers

The theoretical probability of spinning and odd number will be 5/9.

How to calculate the probability?

The theoretical probability of spinning and odd number will be:

Number of odd numbers / Total number

= 5/9

The experimental probability of spinning an odd number is equal to:

= 5/10 = 1/2

Therefore, the theoretical probability of spinning an odd number is greater than the experimental probability of spinning an odd number.

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division equation where 13 is quotient with the dividend a whole number and a unit fraction is the divisor

Answers

The division equation that has a quotient of 13 is 1/1/13 = 13

How to determine the equation?

The given parameters are:

Quotient = 13Dividend = Whole numberDivisor = Unit fraction i.e. 1/n where n is an integer.

A division equation is represented as:

Dividend/Divisor = Quotient

Substitute 13 for the Quotient

Dividend/Divisor = 13

Recall that:

Unit fraction = 1/n

So, we have:

Dividend/1/n = 13

Let n = 13.

So, we have:

Dividend/1/13 = 13

This gives

13 * Dividend = 13

Divide both sides by 13

Dividend = 1

So, we have:

1/1/13 = 13

Hence, the division equation is 1/1/13 = 13

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probability questions
pls help​

Answers

0.2 +0.1+ 0.4 = 0.7/4 = 0.175

A tablet computer costs $399. A person pays $433.91 in the store. What is the sales tax?
A)8.25%
B)8.75%
C)9.25%
D)9.75%

Answers

Answer:

B. 8.75%

Explanation:

Answer:8.75

Step-by-step explanation:

Find the equation of the line that passes through the point (-2, 3) and is parallel to the line whose equation is y = 2x + 1. = 1 1.​

Answers

Answer:

Step-by-step explanation:

The ratio of boys to girls in the 8th grade is 5:6. If there are 75 boys in the 8th grade, how many are girls?​

Answers

Answer:

There are 15 girls

Step-by-step explanation:

Given:- Ratio of boys to girls = 5:3

And, the number of boys = 75

let the girls be 5x and boys be 3x

so, 5 × 75 { given }

x = 75/5 = 15

6x= 6 × 15 = 90

6x/6 = 90/6 = 15

---~ Hope this helps~---

The radius of a single atom of a generic element x is 161 pm and a crystal of x has a unit cell that is a simple cubic. Calculate the volume of the unit cell

Answers

The volume of the unit cell that is a simple cubic is 1.1661622e⁻²⁰.

What is Volume?

Volume is the space occupied by a three-dimensional object.

By the formula of volume of atom

[tex]\rm Volume(atom) = \dfrac{4}{3} \times \pi \times r^3\\Volume(atom) = \dfrac{4}{3} \times \pi \times (161 \times 10^-^2^3)^3\\Volume(atom) = 2.1574e^-^2^1[/tex]

There are total 4 atoms, in a  FCC unit cell.

The total volume is

[tex]2.1574e-21 \times 4 = 8.6296e^-^2^1[/tex]

Volume of a unit cell will be

[tex]\dfrac{8.6296e-21}{0.74} = 1.1661622e^-^2^0[/tex]

Thus, the volume of the unit cell is [tex]\rm 1.1661622e^-^2^0[/tex]

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Daniels garage is 8ft long by 10 ft wide. His living room is twice as long and twice as wide as his garage. Daniels house is 3 times as long and 4 times as wide as his living room. What is the total perimeter of his house?

Answers

Answer:

The perimeter of his house: 256 ft

Step-by-step explanation:

length of living room = 2 x length of garage

                              =2 x 8 ft

                              =16 ft

width of living room  = 2 x width of garage

                             = 2 x 10 ft

                             = 20 ft

daniel house length =  3 x length of L.R

                            = 3 x 16 ft

                            =48 ft

daniel house width   = 4 x width of L.R

                             = 4 X 20 ft

                            = 80 ft

preimeter of rectangle = 2[l + b]

                               = 2[ 48 +80 ]

                              = 256 ft

perimeter of house = 256 ft

HELPP FOR BRIANLEST PLS

Answers

Answer:

63

Step-by-step explanation:

the sum of the interior angles of a triangle is 180

so,

70+47= 117

180-117= 63

Answer:

Your answer is 63°

Explanation:

47 + 70 + angle C = 180° (Sum of all angles of a triangle is 180).

117 + angle C = 180°

So,angle C =180 - 117= 63°

Akeem will record the time it takes him to run 1 mile each day for 7 days. In order to meet his fitness challenge, his mean running time for 7 days must be 9 minutes or less. A list of Akeem's running times, in minutes, for the first 6 days is shown.

9.4, 9.0, 9.1, 8.9, 8.5, 8.8

Answers

The time Akeem runs on days must be 9.3 minutes or less than 9.3 minutes if the mean running time for 7 days must be 9 minutes or less.

What is mean?

It is defined as the single number that represents the mean value for the given set of data or the closed value for each entry given in the set of data.

We have:

Akeem will record the time it takes him to run 1 mile each day for 7 days. In order to meet his fitness challenge, his mean running time for 7 days must be 9 minutes or less.

Here we are assuming that it is required to find the time Akeem runs on the 7th day.

Let's suppose Akeem runs x minutes on the 7th day.

Mean running time ≤ 9

The mean:

[tex]\dfrac{(9.4+9.0+9.1+8.9+8.5+8.8+x)}{7} \leq 9[/tex]

[tex]\dfrac{(53.7+x)}{7} \leq 9[/tex]

53.7 + x ≤ 63

x ≤ 9.3 minutes

Thus, the time Akeem runs on days must be 9.3 minutes or less than 9.3 minutes if the mean running time for 7 days must be 9 minutes or less.

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The solution for x of log, 22 = 3 is between what two integers?

Answers

Answer:

27565541.

Step-by-step explanation:

for the given literal equation z=a/b + c/d .solve for D

Answers

An equation is formed of two equal expressions. The given literal equation z=(a/b)+(c/d) is d=cb/(zb-a).

What is an equation?

An equation is formed when two equal expressions are equated together with the help of an equal sign '='.

The given literal equation z=(a/b)+(c/d) can be solved for D as,

z-(a/b) = (c/d)

(zb-a)/b = c/d

d = cb/(zb-a)

Hence, The given literal equation z=(a/b)+(c/d) is d=cb/(zb-a).

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Gary has 5 cm of string his project uses 1,750 mm how many more millimeters of string does Gary need

Answers

1cm = 10 mm
5cm = 50mm
1750 - 50 = 1700mm

Answer:

1,700mm

Step-by-step explanation:

1,750mm=175cm

5cm=50mm

1,750-50=1,700mm

gary's project uses 1,750 which is equal to 175 cm he already has 5cm of string which is equal to 50mm so he will need 1,700mm of string or 170cm

i hope this helps please feel free to point out any mistakes that i might have made

The diameter of a circle is 10 cm. Find the circumference \textit{to the nearest tenth}to the nearest tenth.

Answers

Circumference = diameter x pi


Circumference = 10 cm x 3.14

Circumference = 31.4 cm

Answer: 31.4 cm

Step-by-Step Explanation:

Diameter (d) = 10 cm
Radius (r) = 10/2 = 5 cm
Circumference = 2πr

Therefore,
= 2πr
= 2 * π * r
= 2 * 3.14 * 5
= 6.28 * 5
= 31.4

Circumference = 31.4 cm

What is the range of this function?
-3 -5
0 -2
4 3
7 8

A(-5,-3,-2,0,3,4,7,8)
B (-5,-2,3,8)
C (-3,3)
D(-3,0,4,7)​​

Answers

Answer:

B (-5, -2, 3, 8)

Step-by-step explanation:

Remember this because you'll probably need it

The range consists of all the y-values that make up a function. Since all of the y-values are [-5, -2, 3, 8], the answer is B

What is the sum? startfraction 3 over x endfraction startfraction 4 over x squared endfraction startfraction 3 x 4 over x cubed endfraction startfraction 7 over x endfraction startfraction 3 x 4 over x squared endfraction startfraction 7 over x x squared endfraction

Answers

The expressions are algebraic expressions, and the sum of the expressions 3/x and 4/x² is [tex]\frac{3x + 4}{x^2}[/tex]

How to determine the sum?

The expression is given as:

[tex]\frac{3}{x} + \frac{4}{x^2}[/tex]

Take the LCM of the expressions

[tex]\frac{3}{x} + \frac{4}{x^2} = \frac{3x + 4}{x^2}[/tex]

The above expression cannot be further simplified

Hence, the sum of the expressions 3/x and 4/x² is [tex]\frac{3x + 4}{x^2}[/tex]

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Answer:

C on edge

Step-by-step explanation:

3x+4/x^2

Help me pls this is due today and I need the answers a soon as possible!!!

Answers

Answer:

You can find the given attachment

To make sure there is enough space for the donuts, Dave wants to add { inch to the minimum length, width, and height of the box. Including the additional space, what should be the length, width, and height of the new box, in inches? nter each answer in a separate response box. ​

Answers

The new length, width, and the height of the cuboid are (L+2) inches, (W+2) inches, and (H+2) inches respectively

What is a cuboid?

It is defined as the six-faced shape, a type of hexahedron in geometry. As the old length, width, and height are not given so we are assuming the length of the box is L, width is W, and height is H.

Dave wants to add 2 inches to the minimum length, width, and height of the box. Including the additional space. So the new length = (L+2) inches

New width = (W+2) inches

New height = (H+2) inches

Thus, the new length, width, and height are (L+2) inches, (W+2) inches, and (H+2) inches respectively.

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What is the explicit formula of the arithmetic sequence?
-9, -6, -3, 0....

Answers

Answer:

Tn= -9+(n-1)×3

Step-by-step explanation:

d= t2-t1 =t3-t2....

=-6-(-9)=3

We realize that this is an arithmetic sequence

Therefore Tn= a + (n-1)d, whereby a if the first term= - 9,d=3

Tn=-9+(n-1)×3

Answer:An=-9+3(n-1)

Step-by-step explanation:

First, find the common difference (the amount you are adding each time). You can find this by taking the second term and subtracting the first term.  Now, identify the first term.  This is the first number in your list.  Finally, plug the first term in for A1 and the common difference in for d in the equation an=a1+d(n-1)  Note: Leave the variable n as part of the equation.

6. Geographic Trends Janice has been offered
a job in Chicago where her current salary of
$30,000 will increase by 20 percent. Before
ct
accepting the position, Janice wants to
understand her potential cost of living. She
estimates that rent will be $1,500 per month.
She will have to take the train to and from
work, which will be $3.50 round trip daily. Her
food cost will be $75 per week. If Janice works
5 days a week for 52 weeks per year, what
will her annual income be after paying rent,
transportation, and food?

Answers

The annual income of Janice when she accepts new job in Chicago be after paying rent, transportation, and food is, $409190.

What is the total cost?

Total cost or the final cost is the summation of all the cost spend while buying any good or taking any service.

Janice has been offered a job in Chicago where her current salary of $30,000 will increase by 20 percent. Thus, his new salary is,

[tex]S=\dfrac{100+20}{100}\times30000\\S=36000[/tex]

He gets 6000 thousand extra after increment. Her annual income is,

[tex]S=36000\times12\\S=432000[/tex]

Before accepting the position, Janice wants to understand her potential cost of living.

She estimates that rent will be $1,500 per month. Thus, the She will have to take the train to and from work, which will be $3.50 round trip daily. Her food cost will be $75 per week.

Janice works 5 days a week for 52 weeks per year. Her annual income be after paying rent, transportation, and food is,

[tex]S=432000-1500\times12-3.50\times5\times52-75\times52\\S=409190[/tex]

Thus, the annual income of Janice when she accepts new job in Chicago be after paying rent, transportation, and food is, $409190.

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26. Figure B is the image of Figure A.
after a dilation with center (0,0) and a
reflection across the y-axis. What is the
scale factor of the dilation?

Answers

The scale factor of dilation is [tex]\LARGE \frac{1}{4}[/tex].

What is scale factor?

When describing an enlargement you must state by how much the shape has been enlarged or reduced.

Area of triangle B =[tex]\frac{1}{2} * b *h[/tex]

                                = 0.5 x 2 x 3

                               = 3 units

Area of triangle A =[tex]\frac{1}{2} * b *h[/tex]

                                = 0.5 x 4 x 6

                               = 12 units

Scale factor =[tex]\frac{Area of \; triangle B}{Area of\; triangle A}[/tex]

                    =[tex]\frac{3}{12}[/tex]

                    = [tex]\frac{1}{4}[/tex]

Hence, the scale factor of dilation is [tex]\LARGE \frac{1}{4}[/tex].

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Find the x- and y-intercepts of the graph of y=−13x+3

Answers

Answer:

x-intercept: [tex]\frac{3}{13}[/tex]  or about 0.231 which is also written as ([tex]\frac{3}{13}[/tex], 0)

y-intercept: 3 which is also written as (0, 3)

[Solution One]

   We can find the answer by graphing. See attached. The points at which the line intersects the different axes is the answer.

[Solution Two]

   We can solve by plugging into the equation. We will do this by setting the other variable, the one we aren't solving for, to 0.

For the x-intercept:

   y = −13x + 3

   (0) = −13x + 3

   0 - 3 = -13x + 3 - 3

   -3 = -13x

   [tex]\frac{3}{13}[/tex] = x

For the y-intercept:

   y = −13x + 3

   y = −13(0) + 3    

   y = 3

what is the equation of a parabola with a vertex at (6,4) and a=2?

Answers

Answer:

y = 2x² - 24x + 76

Step-by-step explanation:

the equation of a parabola in vertex form is

y = a(x - h)² + k

where (h, k ) are the coordinates of the vertex and a is a multiplier

here a = 2 and (h, k ) = (6, 4 ) , then

y = 2(x - 6)² + 4 ← in vertex form

expand factor using FOIL

y = 2(x² - 12x + 36) + 4 ← distribute parenthesis by 2

y = 2x² - 24x + 72 + 4

y = 2x² - 24x + 76 ← in standard form

What is the measure of x?

Answers

Answer:

[tex] x = 75\degree[/tex]

Step-by-step explanation:

In [tex] \triangle BDH,\: \angle x [/tex] is the exterior angle.

[tex]\implies x = 36\degree + 39\degree[/tex] (By exterior angle theorem)

[tex]\implies x = 75\degree[/tex]

On a coordinate plane, 2 triangles are shown. triangle 1 has points at a (negative 3, 4), b (negative 2, 1), c (negative 4, 1). triangle 2 has points at a prime (4, negative 2), b prime (3, negative 5), c prime (5, negative 5). which rule represents the translation from the pre-image, δabc, to the image, δa'b'c'? (x, y) → (x 7, y 6) (x, y) → (x 7, y – 6) (x, y) → (x – 6, y 7) (x, y) → (x 6, y 7)

Answers

The rule which represents the translation from the pre-image (Δabc), to the image (Δa'b'c') is (x, y) → (y, x).

What is a triangle?

A triangle simply refers to a two-dimensional geometric shape that comprises three (3) sides, three (3) vertices and three (3) angles only.

Based on this triangle, we can deduce the following points:

The coordinates of a are given by (-3, 4).The coordinates of a' are given by (4, -2).

By critically observing the triangle, we can also deduce that points were swapped as (x, y) → (y, x) and this is a reflection across line y = x.

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Answer:

B

Step-by-step explanation:

Unit 6.6, Lesson 9: Practice Problems
Jarm-Up
Determine the greatest common factor (GCF) for each pair of numbers,
14 and 21
6 and 8
10 and 50

Answers

Answer:

the answer is 798 + 789 mawdgghhji the same time as the work of the Maroons

can someone help me out with this problem? Thank you!

Answers

Answer:

three (3).

Step-by-step explanation:

H=O+A

c^2=5^2+12^2

c^2=25+144

c^2=169

c=√169

c=13

[tex]\qquad\qquad\huge\underline{{\sf Answer}}[/tex]

Let's calculate the value of c using Pythagoras theorem ~

[tex]\qquad \sf  \dashrightarrow \: c {}^{2} = a {}^{2} + {b}^{2} [/tex]

[tex]\qquad \sf  \dashrightarrow \: c {}^{2} = {5}^{2} + {12}^{2} [/tex]

[tex]\qquad \sf  \dashrightarrow \: c = \sqrt{25 + 144} [/tex]

[tex]\qquad \sf  \dashrightarrow \: c = \sqrt{169} [/tex]

[tex]\qquad \sf  \dashrightarrow \: c = 13 \: units[/tex]

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