HELP! I need answers to every question!

HELP! I Need Answers To Every Question!

Answers

Answer 1

Answer:

We can treat i as if it was a variable/symbol, with the caveat that

i * i = -1

[6]

(4 - 13i) - (3 + 6i) = 4 - 13i - 3 - 6i = 4 - 3 - 13i - 6i = 1 - 19i

[7]

-1 + (-7 + 8i) - 18i = -1 - 7 + 8i - 18i = -8 - 10i

[8]

2i * (4 + 3i) = 2i * 4 + 2i * 3i = 8i + 6i^2 = 8i + 6*-1 = -6 + 8i

[9]

(6 - i) * (9 + 3i) = 6 * 9 + 6*3i - i*9 - i*3i = 54 + 18i - 9i - 3i^2 = 54 + 9i - (3*-1) = 54 + 9i + 3 = 57 + 9i

Answer 2

Answer:

6.) 1 - 19i

7 ) -8 - 10i

8.) -6 + 8i

9.) 57 + 9i

not sure if its the right answer


Related Questions

16. Multiply the polynomials: (x + 3)(x2 – 5x + 12)

Answers

The answer would be -3x^2+3 x + 36

help please??????????​

Answers

Answer:

D. 4+2 = 2+4

Step-by-step explanation:

Commutative property of addition states that the answer does not change when you change the order of the equation.

Example:

a+b = b+a

Hope this helps! Have a great day!

Answer: 4+2=2+4

Step-by-step explanation:

Commutative property of addition states that the answer does not change when you change the order of the equation.

Example:

a+b = b+a

100% correct

pls help I really need it too pass I am begging

Answers

Answer:

Lateral : 103.67 in²

Total : 864 in²

Step-by-step explanation: there you go

Describe the type of correlation each scatter plot shows. Draw a trend line that

models each data set and find the equation of that trend line.

Answers

The correlation is positive, negative and no correlation.

The correlation coefficients off both the scatter plots are mentioned above.

What is correlation?Correlation is a statistical measure that expresses the extent to which two variables are linearly related.The sample correlation coefficient is defined as

        [tex]${\displaystyle {\begin{aligned}r_{xy}&={\frac {\sum x_{i}y_{i}-n{\bar {x}}{\bar {y}}}{ns'_{x}s'_{y}}}\\[5pt]&={\frac {n\sum x_{i}y_{i}-\sum x_{i}\sum y_{i}}{{\sqrt {n\sum x_{i}^{2}-(\sum x_{i})^{2}}}~{\sqrt {n\sum y_{i}^{2}-(\sum y_{i})^{2}}}}}.\end{aligned}}}[/tex]

       where [tex]{\displaystyle s'_{x}}[/tex] and [tex]{\displaystyle s'_{y}}[/tex] are the uncorrected sample standard deviations of        

       X and Y.

Given are the scatter plot graphs as shown.

For the graph {1}, the correlation coefficient is positive and is in range of between 0.7 to 0.8

For the graph {2}, the correlation coefficient is negative and is in range of between -0.4 to 0.45

Therefore, the correlation coefficients off both the scatter plots are mentioned above.

To solve more questions on correlation, visit the link below -

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Jeremy solved 35 problems, which is (5)/(7) of all his homework problems. How many problems are in his homework?
ASAP

Answers

Answer:

49

Step-by-step explanation:

make an equation:

5/7x=35

x=35*7/5

x=7*7

x=49

x is the total amount

The graph shows Kendra's morning run:
Which interval on the graph shows Kendra stopping to tie her shoes and stretch? (4 points)

A
B
C
D

Answers

The interval which is horizontal and has a slope of zero shows no distance was covered while time kept increasing, therefore, the interval that shows Kendra stopping to tie her shoes and stretch is: C.

Recall:

A horizontal line on a graph shows rise, and a slope of zero.

Given the graph showing Kendra's morning run, where time running is plotted on the horizontal axis (x-axis) while distance run is plotted on the vertical axis (y-axis).

Thus, the interval which is horizontal and has a slope of zero shows no distance was covered while time kept increasing, therefore, the interval that shows Kendra stopping to tie her shoes and stretch is: C.

Learn more about horizontal graphs on:

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Bub buys a t - shirt for $7.45. He pays with a $20 bill . How much change will he get

Answers

Answer:

12.55

Step-by-step explanation:

HELP!...................................................

You start your Thanksgiving morning doing the Turkey Trot, a 5K run, with friends. Your mom said you need to be at the Thanksgiving celebration by 11:30am to help prepare the side dishes. In order to get there on time, you have to plan ahead. The Turkey Trot starts at 8:00am. You have allotted 1.25 hours after the trot to stretch, and get home. It takes you 0.75 hours to shower and get ready. The drive to the Thanksgiving dinner is 0.9 hours. At what speed (in km/hr) do you need to run the Turkey Trot in order to still be on time to Thanksgiving on time?

Answers

Answer:

1.6 hrs remaining, or 3.12 km/h

Step-by-step explanation:

A grocery store buys cereal using the cost function c(n) = { 2n when n < 100 1. 9n when 100 ≤ n ≤ 500 1. 8n when n > 500 where n is the number of boxes of cereal the grocery store buys and c(n) is the cost of the cereal. The grocery store then sells the cereal using the sales function s(c) = 1. 3c. What is the grocery store's sales from selling cereal if the grocery store buys 100 boxes and sells all of them?.

Answers

The grocery store's sales from selling cereal if the grocery store buys 100 boxes and sells all of them are $247

From the given function, we can see that the equivalent function for a number of 100 boxes is given as;

c(n) = 1.9n

If n = 100

c(100) = 1.9(100)

c(100) = 190

Hence the cost of 100 boxes will be $190

Given the sales function s(c) = 1. 3c, the grocery store's sales from selling cereal if the grocery store buys 100 boxes will be expressed as:

[tex]s(c) = 1. 3c\\s(190)=1.3(190)\\s(190)=$247[/tex]

Hence the grocery store's sales from selling cereal if the grocery store buys 100 boxes and sells all of them are $247

Learn more on functions here: https://brainly.com/question/17043948

Ali uses 1.5 cups of flour to bake a dozen cupcakes. at this rate,how many cups of flour will she need to bake 30 cupcakes?
A.3.75c
B.3c
C.2.4c
D.2.75c

Answers

Answer:

A

Step-by-step explanation:

1.5 c flour = 12 cupcake

0.75 c flour = 6 cupcake

1.5 + 1.5 + 0.75 = 3.75 c flour

Mr. Capp runs his own disc golf store every Saturday. The first customer of the day came in and bought
1 driver and 2 putters for $43. The second customer came in and bought 3 drivers and 1 putter for $69.
How much money does one driver and one putter cost at Mr. C's store?

Answers

Answer:

a driver costs $19, while a putter costs $12

Step-by-step explanation:

driver = d

putter = p

1d + 2p = 43

3d + 1p = 69

d + 2p = 43. eq 1

3d + p = 69. eq 2

make d the subject of the equation

d = 43 - 2p. eq 3

substitute the value of d in eq 3 in eq 2

3(43 - 2p) + p = 69

129 - 6p + p = 69

collect like terms

129 - 69 = 6p - p

60 = 5p

p = 12

substitute the value of p in eq 3

d = 43 - 2(12)

d = 43 - 24

d = 19

Pleaseee this is a grade and i need to get my 67 to a 70 or above

Answers

Answer: a. [tex]f(x)=3^{x}[/tex]

Step-by-step explanation:

You can plug in the x and y values to get [tex]f(x)=3^{x}[/tex]

15,735 children visited a fun park in January and 32,012 children visitedit in February. How many children visited the fun park in 2 months?

Answers

47,747 all you do is add the two numbers together

67-7x(12-3)
Evaluate

Answers

Answer:

67-63x

Step-by-step explanation:

The sunglasses cost €70
The exchange rate is €1 = £0.895
Emad says, “The sunglasses cost less than £60"
b) Using a suitable approximation, show that Emad is wrong.

Answers

Answer:

 70 * 0.895 = 62.65

OR

1   0.895

 70 x

-Cross-multiply

[tex]\frac{70 * 0.895}{1}[/tex] = 62.65

Please, Help with this MATH question.

Answers

y in the second equation
The x at the second one. I hope you are help

simply the expresstion: 5+8 (3 + x )

Answers

The answer is going to be 8x+29

Answer:

29+8x

Step-by-step explanation:

5+8(3+x)

Expand 8(3+x)

= 5+24+8x (add the numbers)

= 29+8x

35% of (blank) days is 7 days

Answers

Answer:

2.45 days.

Step-by-step explanation:

35% of 7 days is 2.45 days :) please thank.

This should be 20.

50% of 20 is 10. If you subtracted 15% from 10, you would get 3 which then makes it 7. Therefore, 35% of 20 days is 7 days.

Quick easy question

Answers

Answer:16

Step-by-step explanation:

144^0.5 = 12

400^0.5 = 20

a^2=b^2+c^2

20^2 = 12^2 +x^2

x^2 = 400-144= 256

x =16

Answer:

16

Step-by-step explanation:

Only the a) part please!!!!

Answers

[tex](i)\\\\2A = \begin{pmatrix}3x \times 2 & 1 \times 2 & 5 \times 2\\0\times 2 & 2x \times 2 & -3 \times 2\end{pmatrix} = \begin{pmatrix}6x & 2 & 10\\0 & 4x & -6\end{pmatrix}\\\\\\(ii)\\\\2A + B = C\\\\\implies \begin{pmatrix}6x & 2 & 10\\0 & 4x & -6\end{pmatrix} + \begin{pmatrix}y & 0 & -4\\1 & -3y & 2\end{pmatrix} = \begin{pmatrix}31& 2 & 6\\1 & 17& -4\end{pmatrix}[/tex]

[tex]\implies \begin{pmatrix}6x+y & 2+0 & 10-4\\0+1 & 4x-3y & -6+2\end{pmatrix} = \begin{pmatrix}31 & 2 & 6\\1 & 17& -4 \end{pmatrix}\\\\\\\implies \begin{pmatrix}6x+y & 2 & 6\\1 & 4x-3y & -4\end{pmatrix} = \begin{pmatrix}31 & 2 & 6\\1 & 17& -4 \end{pmatrix}\\\\\text{System of equations},\\\\6x +y =31,~~ 4x -3y = 17\\\\\\(iii)\\\\6x +y-31 =0 \\\\4x-3y -17=0\\\\\text{Solving by cross multiplication method}\\\\\\\dfrac x{1(-17) - (-31)(-3)} = \dfrac y{4(-31) - 6(-17)} = \dfrac 1{6(-3) - 4(1)}[/tex]

[tex]\implies \dfrac{x}{-17 -93} = \dfrac{y}{-124 +102} = \dfrac 1{-18-4}\\\\\\\implies -\dfrac{x}{110} = -\dfrac{y}{22} = -\dfrac 1{22}\\\\ \implies \dfrac{x}{110} = \dfrac{y}{22} = \dfrac 1{22}\\\ \\\text{Hence,}\\\\\\x=\dfrac{110}{22}=5,~~~~ y= \dfrac{22}{22} =1[/tex]

Answer:

  (i)

  [tex]2A=\left[\begin{array}{ccc}6x&2&10\\0&4x&-6\end{array}\right][/tex]

  (ii) 6x+y=31; 4x-3y=17

  (iii) (x, y) = (5, 1)

Step-by-step explanation:

(i)

The matrix 2A is written by multiplying each element of A by 2.

  [tex]2A=\left[\begin{array}{ccc}6x&2&10\\0&4x&-6\end{array}\right][/tex]

__

(ii)

Variables are seen in elements (1, 1) and (2, 2) of the matrices A and B, so the simultaneous equations can be chosen from those elements of the equation 2A+B=C.

6x+y=314x-3y=17

__

(iii)

A graphing calculator shows the solution to be (x, y) = (5, 1).

How do you write an equation of a line so that it is parallel or perpendicular to a given point??

Answers

The equation of a line so that it is perpendicular to a given point will be

y-y0=[tex]\frac{-1}{m}[/tex] (x - xo)

The equation of a line so that it is perpendicular to a given point will be

y-y0=m (x - xo)

The standard equation of the line is better written in point-slope form expressed as:

y-y0=m(x - xo)

where: m is the slope of the given line (x0, y0) is any point of the giuven line.

m is the slope of the given line

(x0, y0) is any point on the given line

If the given slope of the  line is m, the slope of the line perpendicular will be expressed as -1/m

The equation of a line so that it is perpendicular to a given point will be

y-y0=[tex]\frac{-1}{m}[/tex] (x - xo)

If the probability that the Islanders will beat the Rangers in a game is 1/3, what is the
probability that the Islanders will win exactly three out of three games in a series
against the Rangers? Round your answer to the nearest thousandth.

Answers

Answer:

1/3 ^ 1/3 * 1/3 = (1/3)^3 = 1/27

The number of hours required to paint a house varies indirectly to the number of painters. If 5 painters painted a house in 120 hours, how many painters would be required to paint a similar house in 50 hours?

Answers

The answer is 2 workers coz there can't be 2.08333... workers

A computer artist created a rectangular image measuring 50 millimeters by 120 millimeters. She then dilated the image by a scale factor of 2.5. What are the dimensions of the dilated image?

A
125 millimeters by 120 millimeters

B
52.5 millimeters by 122.5 millimeters

C
125 millimeters by 300 millimeters

D
20 millimeters by 48 millimeters

Answers

The dimensions of the dilated image is 125 millimeters by 300 millimeters.

An image is dilated if the dimensions of the image is resized in a way that does not change the shape of the image. When an image is dilated, it is made larger.

The scale factor is 2.5. This means that the dimensions are 2.5 larger. Dimensions of the dilated image : 50 x 2.5 and 120 x 2.5 = 125 mm by 300 mm

To learn more about dilation, please check: https://brainly.com/question/3457976

what is the slope of the line with the equation: y+6=24-2x

Answers

Answer:

The slope is -2

Step-by-step explanation:

y+6=24-2x

Subtract 6 from each side

y+6-6=24-6-2x

y = 18 -2x

Rewriting

y = -2x+18

This is in slope intercept form

y = mx+b  where m is the slope and b is the y intercept

The slope is -2 and the y intercept is 18

What is the angle, in degrees, when the coordinate is [tex](-\sqrt{2} /2), \sqrt{2} /2)[/tex] ? Pls help thanks

Answers

Answer:

135°

Step-by-step explanation:

seg AB=seg OB

tan ∠AOB = 1

∠AOB = 45°

∠AOC = 135°

I
Table for a linear equation
Fill in the table using this function rule.
y = 5x-2
X
y
Х
?
- 1
0
1
2

Answers

Here you go mate. Very easy concept to learn :D good luck in your studies

Please help find these values.

Answers

Answer:

3. x=14° y=7

4. x=29° y=3

Step-by-step explanation:

3. this is a 45 - 45- 90 triangle

so the side is a-a-a√2 ( two sides are the same)

4y-3=10+2y+1 -- collect like terms

4y-2y=10+1+3

2y=14

y=7

find the angle of the inside triangle

180-59-90 =

31°

we know the big triangle was a 45-45-90 angle

so x+31=45

x=45-31

x=14°

4. this is a square, all sides are same

5y+3y=24

8y=24

y=3

angle is 90°

x+x+9y+5=90

we know y=3 --substitute

x+x+9(3)+5=90

2x+27+5=90

2x=90-27-5

2x=58

x=58/2

x=29

Someone help me with this for BRAINLIEST thank you!

Answers

Hope it helps.

Don't forget to click the Brainliest button if you like my answer and if you have any query, please feel free to ask in the comment section.

[tex]x+y =6 ~~~.....(i)\\\\x =3y -2~~.....(ii)\\\\\text{Substitute}~ x =3y-2~ \text{in equation (i):}\\\\\\3y -2 +y =6\\\\\implies 4y = 6+2\\\\\implies 4y = 8\\\\\\\implies y =\dfrac 84 =2\\\\\text{Substitute y =2 in equation (ii):}\\\\x = 3(2) -2\\\\\implies x = 6-2 =4\\\\\\\text{Hence,}~ (x,y) = \left(4, 2\right)[/tex]

At the craft store, Franklin bought a bag of red and brown marbles. He received 33 red marbles and 67 brown marbles. What percentage of the marbles were red?

Answers

Answer:

33% of the marbles were red

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Find the population after 5 years40,00032,50035,00032,000 Find the roots of the equation: y^2-1/16=0 Pls I need help quickly!Mindy owns 20 pairs of shoes and every week she purchases two more pairs. How long will it take for her closet to have 50 pairs of shoes? The weight of 120 books is 36kg, find the weight per book what was the final major battle of the american revolution find the perimeter of the triangle A(4,-2) B(9,-2) C(9,10) what did William Prescott do A bag of mixed nuts has 18 almonds, 8 cashews, and 14 peanuts. If one nut is selected, what is the probability that a peanut is chosen?Provide the answer as a simplified fraction. PLEASE HELP ILL GIVE A HEART AND 5 STARS In Canada, just like in China, eating at McDonalds was a novelty for us. In the wake of post-Mao economic reforms, the belated introduction of the Golden Arches to China represented a whole ethos about what constituted the good life. Fast food might connote easy accessibility or overindulgence in the West, but McDonalds presented a different kind of comfort for my family and me. The cost of a burger was hardly a trivial thing for us at the time, and my parents didnt actually treat me to meals there all that often. When they did, we always got takeout so we could eat our burgers and fries around our Formica dining table, on our own plates. The hope was to have our fast food as slowly as we could. The Filet-O-Fish became my menu item of choice. Its virtues are too many to count; doing so would be futile. As McDonalds only seafood-based option, the Filet-O-Fishs semblance of relative health appealed to my parents. Luckily it was also McDonalds most delicious item. It played to my Chinese palate: While other McDonalds buns were toasted, the Filet-O-Fishs was steamed, much like the baozi2. From its honeyed starch to its tangy tartar and savory fillet, the taste of the Filet-O-Fish carries an ineffable umami-ness. At once sweet and sour, it reminds me of orange-chicken sauce: a plausibly Chinese flavor mass-produced in America. Eating one always felt transportive the equivalent of Prousts madeleine3 for my Chinese diasporic upbringing. The Filet-O-Fish is the gold standard of fast food for many Asian-Americans, as well as other minority American communities. Invented by an Ohio franchise owner in 1962, the first Filet-O-Fish was the answer to the problem of McDonalds falling sales on Fridays, when observant Catholics abstained from eating meat. Born from an attempt to market fast food to as many people as possible, the tasty little unit has since been further claimed by everyone from fish-loving Chinese-Americans to practicing Muslims to well, anyone with taste. By 1965 the sandwich had gone national. Its appeal is inscrutable, perhaps out of proportion to its paltry constituent parts. Consider the recognizably flaky fish patty, made from the ubiquitous Alaskan pollock. Pollock is everywhere, writes the marine fisheries biologist Kevin M. Bailey in the book Billion-Dollar Fish. It is the pure white meat in fish sticks bought at Walmart and Filet-O-Fish burgers ordered in McDonalds. But you wouldnt want the fish to be more interesting. The generic quality of pollocks fishiness common enough for various cuisines to lay claim to it is part of its allure. So maybe what makes the sandwich beloved isnt its taste at all, but the juxtaposition of its elements: A single fillet of fried fish, topped with a thin slice of American cheese and tartar sauce, all of it cradled in a bun whose impossible roundness suggests the triumph of industrial food production. As a child, I was under the fantasy that my obsession with such a strange sandwich was eccentric. When I went to McDonalds with friends who got Chicken McNuggets Happy Meals or cheeseburgers, ordering the Filet-O-Fish made me feel as if I was in on some sort of secret. After a few years in Montreal, my dad landed a good government job in Victoria, British Columbia. On our drive across Canada, we indulged in the prospect of my dads earning a real salary by eating at McDonalds almost daily, a whirlwind of Filet-O-Fish meals (for me) and hamburgers (for my parents). But my experience was shattered when I, fancying myself different, pointed out that my parents both loved hamburgers while I, a renegade, preferred the Filet-O-Fish. Well, I like the Filet-O-Fish most too, my mother put it candidly. But it is expensive, so we only buy it for you. These days, the sandwich is more expensive than ever; its also less beautiful than I remember. At some point, the Filet-O-Fish underwent rebranding: An ostentatious paper box replaced the modest blue wrapper, while what I remember being a full slice of cheese seems to have shrank by half. McDonalds insists that the cheese has always been half a slice so as not to overwhelm the fishiness of the fillet. Todays unboxing experience most often reveals limp cheese sagging off the patty, frequently stuck to the ill-advised box. Where is the madeleine of my youth? Nowadays, a good Filet-O-Fish is hard to find. Which of the following statements best encapsulates the authors line of reasoning in the passage?A....McDonalds presented a different kind of comfort for my family and me. (paragraph 2)B.By 1965 the sandwich had gone national. (paragraph 4)C.Its appeal is inscrutable, perhaps out of proportion to its paltry constituent parts. (paragraph 5)D.These days, the sandwich is more expensive than ever; its also less beautiful than I remember. (paragraph 7, sentence 1)E.Nowadays, a good Filet-O-Fish is hard to find. (paragraph 7, sentence 6) what is the constant for 1000z + 800y A shopkeeper orders a special brand of coffee powder to be delivered tohim. A packet of this coffee powder cost $2. These packets are packed intocontainers which cost $3 each. Each container can hold 30 packets. A vandelivers 60 containers of this coffee powder to the shop and charges $20 fortransport, How much does the shopkeeper pay altogether? need help with math problem give 5 stars and a good rating Help ASAP pleaseee A line passes through the points (-4,1) and (-3,3) this line can be modeled by the equation y=mx+b What is the values of m and b?