Mathematics Middle School

Find the sum of 3 - 7i and 8 + 4i.

Answers

Answer 1
Thanks for your equation!

This problem seems tricky, but is pretty simple.

All we have to do is add:

3 - 7i + 8 + 4i

And combine like terms:

-3i + 11

Hope this helps!
Answer 2
This problem looks tricky but in truth is very simple:
You simply add 3-7i+8+4i
You combine terms and it equals to- 11-3i

Related Questions

if x = -6, which inequality is true, -5 - 3x > 10, -3 - 5x < -14 or 2-x < -3?

Answers

if x = -6
we can subtitution x to every inequality, so :
-5 - 3x > 10
-5 - 3(-6) > 10
-5 - (-18) > 10
-5 + 18 > 10
13 > 10 [true]

-3 - 5x < -14
-3 - 5(-6) < -14
-3 - (-30) < -14
-3 + 30 < -14
27 < -14 [false]

2 - x < -3
2 - (-6) < -3
2 + 6 < -3
8 < -3 [false]

So if x=-6, inequality true is -5 - 3x > 10.

a 7/16 inch bolt is used in a machine . what is the length of the bolt writtin as a decimal?

Answers

In decimal form it is .4375

find the factors and the greatest common factor 375,66,333

Answers

Answer:

the greatest common factor is 3

Step-by-step explanation:

375: 1, 3, 5,11, 15, 25, 75, 125, 375

66: 1, 2, 3, 6, 11, 22, 33, 66

333: 1, 3, 9, 37, 111, 333

What is 1,995298 to the nearest 1,0000

Answers

1,995,298 rounded to the nearest 10,000 is 2,000,000

hope this helps

he earns $7 a week for each cat he feeds and $0.20for each email he answers. Marcus answered 140 emails and earned $49 last week. create an equation that will determine the number of cats he fed

Answers

3 cats! 
140x0.020= 28
7x3=21
28+21=49
bam hope i helped :)

Write an algebraic expression for each verbal expression

Answers

10-u
18+n
33j
2/5*n^3
Its me again

What is 51/8 as a mixed number?

Answers

You divide 51/8.

It's 6, and the remainder is 3, then put 3 over the denominator.

It would be 6 3/8.

What is 39.39 rounded to the nearest 10th

Answers

39.39 rounded to the nearest 10th is 39.4

you round up, since the hundredths place is higher than 5.

hope this helps! :D
the answer is 39.4. srry th pic is so blurry it's just an explanation how to round and how I got the answer

2/5 (y-40) = 5 (solve for y)

Answers

first,multiply both sides by 5 to get rid of the faction:
2(y-40) = 25
then, divide both sides by 2 to get rid of the 2 in the left side:
y-40 = 12.5
then, isolate the y in one side and the other terms on the other.
y = 12.5+40
y = 52.5

567,433 to the nearest hundred thousand

Answers

567,433...to the nearest hundred thousand..

first, find the number in the hundred thousand place....it is the 5...now look at the number directly to the right of it...
if that number is 5 or above, ur 5 gets rounded up to a 6
if that number is 4 or below, ur 5 stays the same

so the number to the right of 5 is 6....it is greater then 5, so u round ur 5 up to a 6...and ur answer is 600,000 <==

because 567,433 is closer to 600,000 then it is to 500,000

The number 567,433 nearest hundred thousand is 600,000 after rounding off, the answer is 600,000.

What is rounding off the number?

Rounding is a technique to reduce a large number to a smaller, more approachable figure which is very similar to the actual. Rounding numbers can be achieved in a variety of ways.

It is given that:

The number is 567,433

600,000

Rounded to the nearest 100,000 or

the Hundred Thousands Place.

Thus, the number 567,433 nearest hundred thousand is 600,000 after rounding off, the answer is 600,000.

Learn more about the rounding off number here:

https://brainly.com/question/13391706

#SPJ2

simplify the following expression: 2(6x + 18)

a. -12x + 36
b. 8x + 20
c. 6x + 36
d. 12x + 36

Answers

your answer will be D 12x+36
It's d 12x+36
because you multiply 2 and 6 and then 2 and 18

if sin q = 4/5, cos p + cos q =?

Answers

Sent a pic for you to see how I got the answer.

Which integer is less than –4?



 
A.
–6


 
B.
–2


 
C.
0


 
D.
3

Answers

-6 is less than (-4)
The answer is A. -6 because if the numbers were on a number like -6 would be left of -4 which means it's less than -4

What’s b = 3x + 9xy ? Solving the equation for x.

Answers

Answer:

x= [tex]\frac{b}{3+9y}[/tex] .

Step-by-step explanation:

Given :  b = 3x + 9xy.

To find :  Solving the equation for x.

Solution : We have given

b = 3x + 9xy.

Taking common 3x from right hand side

b = 3x ( 1 + 3y).

On dividing both sides by 1 + 3y .

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

On dividing both sides by 3

[tex]\frac{b}{(3+9y)}[/tex] = x .

Therefore, x =[tex]\frac{b}{(3+9y)}[/tex] .

x = b/(3 + 9y)

Further explanation

[tex]\boxed{ \ b = 3x + 9xy \ }[/tex]

In the equation, there are three variables, namely b, x, and y. The coefficients of x and xy are 3 and 9, respectively.

We need solving for x from the equation.

Let us reposition it by swapping sides. The aim is to prepare x as the subject on the left-hand side.

[tex]\boxed{ \ 3x + 9xy = b \ }[/tex]

On the left-hand side, 3x is pulled out of the brackets because it is the GCF (The Greatest Common Factor) of 3x and 9xy.

[tex]\boxed{ \ 3x(1 + 3y) = b \ }[/tex]

Both sides divided by 3(1 + 3y).

[tex]\boxed{ \ x = \frac{b}{3(1 + 3y)} \ }[/tex]

Hence, the final result is

[tex]\boxed{\boxed{ \ x = \frac{b}{3 + 9y} \ }}[/tex]

That's all the steps to get x as a subject.

Learn moreSolve one of the variables of the equation to become the subject https://brainly.com/question/6465937# The inverse of a function https://brainly.com/question/3225044What is the simplified form of 5(14 - 2)² ÷ 2 ? https://brainly.com/question/1602237  

Keywords: what’s b = 3x + 9xy?, solving the equation for x, solve for x, both sides, divide, GCF, subject, steps, b/(3 + 9y)

What is 855,000 in scientific notation

Answers

8.55 x 10^5

you want your scientific notation number in between 1 and 10 !!!
Step ONE: Move the decimal place to the left to create a new number from 1 up to 10.
- Where’s the decimal point in 312,000,000,000? Because it’s a whole number, the decimal point is understood to be at the end of the number: 312,000,000,000.
So, N = 3.12.

Step TWO: Determine the exponent, which is the number of times you moved the decimal.
-In this example, you moved the decimal 11 times; also, because you moved the decimal to the left, the exponent is positive. Therefore, a = 11, and so you get

Step THREE: Put the number in the correct form for scientific notation

Evaluate the expression for the given values.

mx−y when m=2, x=7, and y=5

Answers

2(7)-5

2*7 is 14

14-5 is 9

The answer to 2(7)-5 is 9
2(7)-5
14-5
9 would be answer

A town's population increases in one year from 100,000 to 110,000. If the population is growing exponentially at a steady rate, then at the end of a second year it will be

Answers

120,000 people.
110,000 - 100,000 = 10,000
110,000 + 10,000 = 120,000 peoples.

How do you read 12.0045 in standard form

Answers

12.0045 = 12 + 45/10000

so you read as

twelve and forty-five ten-thousandths

Divide 28 cans of soda into two groups so the ratio is 3 to 4.

Answers

28 cans of soda into 2 groups in which the ratio is 3:4

3 x 4 = 12
4 x 4 = 16
12 + 16 = 28

you will put 12 cans in one group and 16 cans in another group

hope this helps

Rafael has 118 baseball cards arranged in an album. Each page of the album can hold 9 cards. How many pages are full and how many cards are on the last page? Show your work.

Answers

Rafael would have 13 pages that are full.
13 times 9= 117
Rafael would have 1 card on the last page.
118-117= 1

The division is one of the four fundamental arithmetic operations. The number of pages of the album that are completely filled is 13, while the last page of the album has only 1 card.

What is Division?

The division is one of the four fundamental arithmetic operations, which tells us how the numbers are combined to form a new one.

Given that Rafel has 118 baseball cards arranged in an album. Also, Each page of the album can hold 9 cards.

Therefore, the number of pages that will be full can be found by dividing the total number of cards available by the total number of cards that each page can have.

In the division, the quotient represents the number of pages which have 9 photos, therefore are full. And the remainder represents the number of photos that will be left on the last page.

The division can be carried out as shown below.

Hence, the number of pages of the album that are completely filled is 13, while the last page of the album has only 1 card.

Learn more about Division here:

https://brainly.com/question/369266

#SPJ5

Discussion Explain why 2 < x < 6 can be considered the short method for writing the AND compound inequality x > 2 AND x < 6.

Answers

its much shorter since you changed 2 inequalities into 1 and you made it be 2 in 1

Eva would like to add paper streamer around the edge of a round table. The table covers an area of 19.5 square ft. What is the minimum length of the paper streamer Eva needs?

Answers

C=3.14d
A=3.14 r squared
19.5 divided by 3.14 =r squared
6.21 =r squared
R=2.49
C= 3.14 (4.98)=15.64 feet of paper

After 3.5 hours pasha had traveled to 17 miles if she travels at a constant speed how far will she have traveled after four hours

Answers

Since we want to know how far she goes every hour to multiply that by 4 to get how far she goes in 4 hours, we do 17/3.5 to get per hour miles = around 4.86. Multiply that by 4 to get around 19.43 miles

In order to join an online learning community, there is a $20 startup fee and a $5 monthly fee. Write an equation in slope-intercept form that models this situation.

Answers

y=5x+20 hope this helps

Equation in slope intercept form will be 5x + 20.

It is given that to join a online learning community, startup fee is $ 20 and the monthly fee is $ 5.

We have to write an equation in slope-intercept form.

What is the equation for slope intercept form ?

Equation for slope intercept form is y = mx + c.

Let's assume ;

y = total cost

x = months

c = startup fee

∵ equation in a slope intercept form is y = mx + c.

Putting the values , we get ;

y = 5x + 20

Thus the equation in slope intercept form will be y = 5x + 20.

To learn more about slope intercept form click here ,

https://brainly.com/question/12005129

#SPJ6

#SPJ6

why is scientific notation useful? how is scientific notation used in the real world?

Answers

It is useful because there are some numbers that are either way too small or way too big to write out in standard form.And I don’t know the second part.Hope that helps!!
Scientific Notation is so useful is so many ways!!!!
It makes it easier to deal with because the long numbers are converted into smaller numbers. Like for example, 0.000000000000000000000000000000000000000000045 is converted into 4.5*10^44. Isn't that MUCH MORE simpler?!?!??!
It is also used to find masses, for example, like some metals or substances that have a really smaller mass. 


Algebra 1: Consecutive Integers
If the sum of the first two consecutive even integers is equal to three times the third what are the three integers

Answers

x equals the smallest. x+2 equals the next largest and x+4 equals the third largest.

x+(x+2)= 3(x+4)
2x+2= 3x+12
2x= 3x+10
-x=10
x=-10

Final answer: -10, -8, -6

When you write a deposit slip, you put the cash and the checks in the same section True or False

Answers

False They have a check place and cash place
The answer is false because you're writing a check which isnt cash

Pls help
Simplify
6m+ 7n+ 5m - 3n

Answers

6m+ 7n+ 5m - 3n
(6m + 5m) + (7n - 3n)
11m + 4n  ←  answer
6m + 7n + 5m - 3n
Do the 6m and 5m first. Add them together.
6m + 5m = 11m

Now subtract -3n from 7n.
7n - 3n = 4n

11m + 4n is simplified.

Three equivalent ratio of 36:48

Answers

To find equivalent ratios, one of two things must apply:
There are common factors of both the numerator and denominator
The numerator and denominator are common factors of other numbers.

ex. 36 and 48 are both divisible by 2, 3, 6, and 12. If you divide both the numerator and denominator by 2, your ratio is 18:24. If the numerator and denominator were divided by 3, the ratio would be 12:16. Divided by 6 would give you a ratio of 6:8, and dividing by 12 results in a ratio of 4:3.

On the other side of the spectrum, if you, say, needed five or six options, then you can multiply both the numerator and denominator by a non-zero number (You are really multiplying by one, ex. 2/2, so the ratio is equivalent. It just seems larger.) So if you did multiply it by 2/2, then your ratio would be 72:96. Hope this helps.

Slope=5,through(3,13)

Answers

The slope equal 5 so the equation as the form y=5x+b,
(3,13) means 5(3)+b=13, hence b=-2.
So y=5x-2.

Answer:

y=5x-2.

Step-by-step explanation:

This question wants us to write the given line in a slope-intercept form, which is y=mx+b, where m is the slope and b is the y-intercept. We already know the slope, which is 5, so just insert 5 in for m. We get y = 5x = b. We're not done, however, we still need to solve for b. (3,13) equals 5(3)+b=13. This gives us our final result of b=-2. insert this into the equation for b, and the equation becomes y = 5x -2.

PLEASE MARK BRAINLIEST

Other Questions
0.5 is 10 times as great as Harry estimates that the dinner will have 48 g of fat. if the recommended daily allowances is 70 g What percentage of her total daily allowance of fat will the dinner be Find the midpoint of the line segment whose endpoints are (0,1/2 ) and (0,3/4 ). What enabled more white males to gain the right to vote throughout the first decades of the 1800s? Explain how scientific knowledge develops through making observations about the natural world Today, the majority of mass-media outlets are owned by six corporations. this is a product of ___. The cost to manufacture x number of chairs can be represented by the function C(x) = 36x. In this context, what does C(x) = 2268 mean? Which factor causes a decrease in the rate of dissolution? Help asap with this question. What is the smallest defined unit of time on the geological scale? In basketball some baskets worth two points others worth three points.in one game the ratio of three point baskets to three point tries for one team was 5:8 if team scored 60 points from three point baskets,how many three point tries did the team have? Need help asap please! What factors must be present for majoritarian politics to be in play? jada gets 2 new packs of earses.each pack has 6 earsers in it. draw an array to show how many erasers Jada has together Anyone know topical outlines? Is 0.5 greater than or less than 6/10 A lily plant on a pond is an example of which food chain level? A. primary consumer B. decomposer C. producer D. 3rd tier consumer Which of the following statements violates the cell theory? A) Mitosis produces new cells identical to the parent cell that divided to make them. B) Viruses are not considered to be living organisms, because they are smaller than a cell. C) Though humans are one organism, they are composed of about 100 trillion individual cells. D) Some scientists believe that prions, tiny proteins much smaller than a cell, that can replicate themselves, may be living organisms. Round 4,589 to the thousands Which of the following expressions represents the total earnings of a commissioned employee earning 9.5% commission with sales of $8,540? Steam Workshop Downloader