Multiply and simplify -12i x 3i

Answers

Answer 1
-36i^2 because -12 X 3= -36 and i X i = i^2
Answer 2
-12i×3i=-12×3×i×i
12×3=36 i×i=i²
So in the case of basic algebra, it's 36i²

If i is √-1 then i² is √-1×√-1 which is -1
36×-1=-36

Related Questions

the product of m and 5, minus the quotient of r and 7

Answers

5m-7/r  would be the simplified answer.

Figure ABCD is a trapezoid with point A (0, −4). What rule would rotate the figure 270° clockwise?

Answers

To rotate it 270 degrees clockwise (x,y) transforms to (-y,x)

Answer-

The rule (x, y) → (-y, x) would rotate the figure 270° clockwise and after rotation the coordinate of A will be (4, 0)

Solution-

ABCD is a trapezoid with vertex A at (0, -4)

The trapezoid ABCD is rotated 270°.

While rotating a point with coordinate (x, y) 270° clockwise, its new coordinate will be (-y, x)

So applying the rule, new coordinate of A will be (4, 0)

Therefore, the rule (x, y) → (-y, x) would rotate the figure 270° clockwise and after rotation the coordinate of A will be (4, 0)

0.8 is 10 times as great as wich decimal?

Answers

I don't know what to say, I've been trying to explain this for like... 10 minutes but I can't think of how to explain it. All I can say is to just divide .8 by 10. The answer is .08.

What is 681,542 rounded to the nearest hundred thousand.

Answers

That would be 700,000
The answer is 700000

how to graph the equation y= 2x + 3 and y= 2x -2?

Answers

Both equations are lines with a slope of 2. They will be parallel. They differ only in their y-intercept.

It can work well to graph the y-intercept, then plot another point that is at some horizontal distance from the y-axis and twice that distance above the y-intercept.

y = 2x + 3
Plot the point (0, 3) and the point (2, 7). Draw a line through those points.

y = 2x - 2
Plot the point (0, -2) and the point (2, 2). Draw a line through those points.

the length of a rectangle is 6 units shorter than 1/4 of the width x. Write an expression for the perimeter of the rectangle.

Answers

L=x/4 -6

Perimeter= Length x Width
Width=x
Length= x/4 -6

P=LxW
P=(x/4-6)x(x)
[tex]\bf \textit{perimeter of a rectangle}\\\\ P=2l+2w\quad \begin{cases} l=length\\ w=width\\ -----\\ l=\frac{1}{4}w-6 \end{cases}\implies P=2\left( \frac{1}{4}w-6 \right)+2w \\\\\\ P=\cfrac{1}{2}w-12+2w\implies P=\cfrac{w}{2}-12+2w\implies P=\cfrac{w-24+4w}{2} \\\\\\ P=\cfrac{5w-24}{2}\implies P=\cfrac{5}{2}w-12[/tex]

The normal body temperature of a camel is 37° C this temperature varies by up to three degrees C throughout the day write and solve an absolute value inequality that represents the range of normal body temperatures in degrees celsius of a camel throughout the day

Answers

Given that the normal body temperature of a camel is 37° C and that the temperature varies by up to three degrees C throughout the day.

Let x represent the normal body temperatures in degrees celsius of a camel, the absolute value inequality that represents the range of normal body temperatures in degrees celsius of a camel throughout the day is given by

|x - 37| ≤ 3

The absolute value inequality is solved as follows:

|x - 37| ≤ 3

-3 ≤ x - 37 ≤ 3

-3 + 37 ≤ x ≤ 3 + 37

34 ≤ x ≤ 40.

A birds nest is 12 feet above the ground. A moles den is 12 inches below the ground. What is the difference in height of these 2 positions?

Answers

Final answer:

The difference in height between the bird's nest and the mole's den is 132 inches.

Explanation:

To find the difference in height between the bird's nest and the mole's den, we need to convert the measurements to the same units. The nest is 12 feet above the ground, which is equivalent to 12 x 12 = 144 inches above the ground. The mole's den is 12 inches below the ground. To find the difference, we subtract the depth of the mole's den from the height of the bird's nest: 144 - 12 = 132 inches.

Final answer:

To find the difference in height between the bird's nest and the mole's den, convert the measurements to the same unit and calculate the total difference.

Explanation:

To find the difference in height between the bird's nest and the mole's den, we need to convert the measurements to the same unit. Since the bird's nest is 12 feet above the ground and the mole's den is 12 inches below the ground, we can convert both measurements to inches. There are 12 inches in a foot, so the bird's nest is 12 x 12 = 144 inches above the ground. The difference in height is then 144 inches + 12 inches (negative sign since it's below the ground) = 156 inches.

How should the number 1.230 x 103 be properly expressed as a decimal?

Answers

Answer: 1,230
Usage of 10^x form is called scientific form and it helps much in science where the calculation unit can vary from very big into very small.
In this case, you are given the number 1.230 x 10^3  and asked to express it in decimal form. Then you just simply need to multiply the number with the 10^3. The calculation  would be: 1.230 x 10^3= 1.230 x 1000= 1230

Final answer:

To express [tex]1.230 \times 10^3[/tex] as a decimal, you move the decimal point three places to the right, resulting in the number 1230.

Explanation:

The question asks how the number [tex]1.230 \times 10^3[/tex] should be properly expressed as a decimal. To convert from scientific notation to decimal form, we multiply the numerical part of the expression by 10 raised to the power indicated by the exponent. In this case, 1.230 is multiplied by  [tex]10^3,[/tex] which means 1.230 needs to be multiplied by 1000 (because 103 = 1000). Therefore, we move the decimal point three places to the right (since the exponent is positive), transforming  [tex]1.230 \times 10^3[/tex] into 1230.

the 400ths power of number is 9^1000 what is the number

Answers

[tex]\bf (9^{1000})^{400}\implies 9^{1000\cdot 400}\implies 9^{400000}[/tex]

what is the improper fraction of 7/2

Answers

That is an improper fraction

It is already an improper fraction, which basically is a larger number over a smaller number.

Did you mean in mixed fraction form? It would be 3 1/2, then. 

For a party 20 sandwiches are being made if each sandwich is cut into thirds how many sandwich pieces are there?

Answers

Well let’s simplify the problem.

If we take one sandwich it would be 1: and if we add the fact that for every one sandwich 3 new sandwiches were made, we can make a 1:3 ratio. If for every 1 sandwich there are 3 more sandwiches then we would multiply the beginning amount of 20 sandwiches to both numbers in the ratio so it stays equivalent.

1 x 20 = 20
3 x 20 = 60

So we can say now that the ratio for 20 sandwich pieces there are 60 new sandwich pieces.

The new ratio being 20:60 thus the amount of sandwiches after they were cut in thirds is 60 sandwiches

Answer = 60 sandwiches



Have a nice day! :D
Final answer:

When you cut 20 sandwiches into thirds, you will end up having 60 pieces of sandwiches.

Explanation:

The question you're asking requires a simple multiplication. Given that you have 20 sandwiches and you're cutting each sandwich into thirds, you need to multiply the number of sandwiches (20) by the number of cuts (3). The equation is 20 sandwiches * 3 pieces/sandwich.

So, when you multiply 20 by 3, you end up with a total of 60 pieces of sandwich. Therefore, after cutting all the sandwiches into thirds, you should have 60 pieces of sandwich for the party.

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Simplify using the distributive property. 8( y + 12)

A: 8 y + 12
B: 20 y
C: 20 + y
D: 8 y + 96

Answers

Final answer:

The question requires us to simplify 8(y + 12) using the distributive property, which results in 8y + 96. So, correct answer is D: 8y + 96.

Explanation:

The question is asking us to simplify the expression 8( y + 12)

using the distributive property. The distributive property states that multiplication distributes over addition. In simpler terms, it means that if you have a multiplication operation involving a sum (or difference), you can 'distribute' the multiplier to each term inside the parenthesis.

Applying the distributive property to 8( y + 12) gives us:

8 * y + 8 * 12

This simplifies to:

8y + 96

So the correct answer is D : 8y + 96.

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a painter works 37.5 hours one week. If she worked 5 days, how many hours did she work on average per day?

Answers

This means she worked 37.5 hours in 5 days, taking 2 days as a vacation.
To find the amount she worked in one day:

37.5/5
7.5 hours

Hope this helps!
37.5 divided by 5 would come out to be 7.5 hours

In the 2011 new york marathon 29867 men finished the race, and 16928 women finished the race. Each finisher was given a t-shirt. About how many men's shirts were given away? About how many women's shirts were given away? Explain how you found your answers.

Answers

30000 men's shirts and 17000 woman's shirts

29867 rounded is about 30000

16928 rounded is 17000

The number of t-shirts given to men is 29867 and the number of t-shirts given to women is 16928.

What is a number system?

The number system is a way to represent or express numbers.

A decimal number is a very common number that we use frequently.

Since the decimal number system employs ten digits from 0 to 9, it has a base of 10.

Any of the multiple sets of symbols and the guidelines for utilizing them to represent numbers are included in the Number System.

Given that,

Each male finisher has given a t-shirt

So,

Number of men finishers = number of t shirt

Since,

number of t-shirts given to man = 29867

Similarly,

Each women's finisher has given a t-shirt

So,

Number of women's finishers = number of t-shirts

So,

number of t-shirts given to women = 16928

Hence "The number of t-shirts given to men is 29867 and the number of t-shirts given to women is 16928".

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12-5x-4kx=y solve for x

Answers

[tex]12-5x-4kx=y :x[/tex] 

[tex]-5x-4kx=y-12[/tex] 

[tex]-x(5+4k)=y-12 [/tex] 

[tex]-x= \dfrac{y-12}{5+4k} [/tex] 

[tex]x=- \dfrac{y-12}{5+4k}[/tex]

Please help me!! I'm terrible at math

Answers

girl thats so easy i can help you 

Is the number of calories you have burned since midnight at any time during the say a function\?

Answers

Yes, this would be considered a function of time elapsed. To be a function, there needs to be exactly a one-to-one relationship between the variables. At any one time (elapsed since midnight), there is exactly one value for the number of calories burned.

Antonio is ready to move out of his parent's house and live on his own. He found a great apartment that has all utilities included. His job as an assistant plumber requires him to have a car, but his hours are flexible enough to give him time on the weekends to have fun with his friends. What is the best way Antonio's budget can be modified to help him save enough for the $200 down payment and make the $500 monthly rental payment? Monthly Budget Old Budget New Budget Income Wages $1500 $1500 Expenses Food Cell Phone Savings Entertainment Car Expenses . $250 $175 $200 $200 $300 . $____ $____ $____ $____ $____ Net Income $375 $____ a. Antonio could keep his budget the same and hope he gets a raise at work. b. Antonio could reduce his monthly entertainment expenses by $100 to help pay the monthly rent. He could take $200 out of savings once for the deposit. c. Antonio could live at his parent’s house for one more month and save his net income. After one month of living at home, he would have enough additional money for the deposit and one year’s rent at the apartment. d. Antonio could reduce his monthly entertainment expenses by $75 and his food expenses by $50 to pay the monthly rent. He could take $200 out of savings once for the deposit.

Answers

the answer is d just did it on edgunity 

Answer:

d. Antonio could reduce his monthly entertainment expenses by $75 and his food expenses by $50 to pay the monthly rent. He could take $200 out of savings once for the deposit.

Step-by-step explanation:

As you can see, Antonio´s expenses add up to a total of $1,125 a month

Expenses:

Food                    $250

Cellphone            $175

Savings                $200

Entertainment      $200

Car                        $300

Total:                     $1175

So he has $375 each month free to pay for the rent, he is $125 short of making it to the $500 monthly rent, so he only has to cut expenses for $125 dollars, by reducing his food expenses $75 and his entertainment expenses $50 he makes the $125 that he is lacking and is able to afford the $500 monthly rent.

the mantle layer of earth begins about 70 kilometers underneath the surface. The layer called the outer core begins about 2970 kilometers underneath the surface. Write an interger for the position of each layer relative to the surface

Answers

Given:
mantle layer of earth begins about 70 kilometers underneath the surface
outer core begins about 2970 kilometers underneath the surface

Since we need to find the position of each layer relative to the surface, the surface will serve as the point of origin or 0. Below the surface infers a negative value. So, Mantle layer is -70 km from the surface while outer core is -2970 km under the surface.

Comparing -70 and -2970, -70 has a greater value than -2970. The nearer the number is to the origin or 0, the higher its value.

Comparing the absolute greater value of -70 and -2970, -2970 has a greater absolute value. This is because absolute value is the positive value of the number. Absolute value of -70 is 70 while absolute value of -2970 is 2970. Thus, -2970 has a greater absolute value. 

A city's sales tax is 0.07write this decimal as a fraction and tell how many cents of tax are on each dollar

Answers

its 7/100 is the fraction and for a dollar its 7 pennies

Chris said that it is 31 days until his birthday. how many hours until his birthday? minutes? second?

Answers

31 days * 24 hrs in a day= 744 hours

744 hours* 60 minutes per hour = 44640 minutes

44640 minutes * 60 seconds per minute = 2678400 seconds

Hope this helps!

8/9(54x−36)+2=−34(−40+16x)+90x

Answers

Answer:-2

Step-by-step explanation:

Step 1: Simplify both sides of the equation.

Step 2: Subtract 78x from both sides.

Step 3: Add 30 to both sides.

Step 4: Divide both sides by -30.

x=−2

The expression as 8/9(54x−36)+2=−34(−40+16x)+90x gives the value of x is -2.

What are equivalent expressions?

Those expressions who might look different but their simplified forms are same expressions are called equivalent expressions.

To derive equivalent expressions of some expression, we can either make it look more complex or simple. Usually, we simplify it.

Given ;

8/9(54x−36)+2=−34(−40+16x)+90x

First we need to use the distributive property

48x-32+2=30-12x+90

Now then add or subtract like terms,

48x-30=30+78x

Then subtract 48x

-30=30 +30x

Now, then -30

-60=30x

then multiply by 30

We get the value of x

x=−2

Therefore, the expression as 8/9(54x−36)+2=−34(−40+16x)+90x gives the value of x is -2.

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frank finished his history assignment 1/5 hours then he completed his math assignment in 2/3 hours what is the total amount of time Frank's been doing these two assignments write your answer in simplest fraction form

Answers

1/5 = 3/15
2/3 = 10/15
3/15 + 10/15 = 13/15
13/15 cannot be simplified any further

The total amount of time Frank's been doing these two assignments will be 13 / 15 hours.

What is a fraction number?

A fraction number is a number that represents the part of the whole, where the whole can be any number. It is in the form of a numerator and a denominator.

PEMDAS rule means for the Parenthesis, Exponent, Multiplication, Division, Addition, and Subtraction. This rule is used to solve the equation in a proper and correct manner.

Frank finished his history assignment in 1/5 hours then he completed his math assignment in 2/3 hours.

Then the total amount of time Frank's been doing these two assignments will be

⇒ 1/5 + 2/3

⇒ (3 + 2 x 5) / 15

⇒ 13 / 15 hours

The total amount of time Frank's been doing these two assignments will be 13 / 15 hours.

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Solve this equation for C

R=5(C/A-0.3)

Answers

isolate the variable by dividing each side by factors that don't contain the variable c=ar/5+0.3a

Answer:

[tex]C=0.2RA+0.3A[/tex]

Step-by-step explanation:

To solve the equation [tex]R=5(\frac{C}{A}-0.3)[/tex] for [tex]C[/tex] you must:

[tex]\mathrm{Switch\:sides}\\\\5\left(\frac{C}{A}-0.3\right)=R[/tex]

[tex]\mathrm{Divide\:both\:sides\:by\:}5\\\\\frac{5\left(\frac{C}{A}-0.3\right)}{5}=\frac{R}{5}[/tex]

[tex]\mathrm{Simplify}\\\\\frac{C}{A}-0.3=\frac{R}{5}[/tex]

[tex]\mathrm{Add\:}0.3\mathrm{\:to\:both\:sides}\\\\\frac{C}{A}-0.3+0.3=\frac{R}{5}+0.3[/tex]

[tex]\mathrm{Simplify}\\\\\frac{C}{A}=0.2R+0.3[/tex]

[tex]\mathrm{Multiply\:both\:sides\:by\:}A\\\\\frac{CA}{A}=0.2RA+0.3A[/tex]

[tex]\mathrm{Simplify}\\\\C=0.2RA+0.3A[/tex]

Which one of these numbers is not like the others?

25, 16, 49, 63, 81

Answers

25 is not alike the other numbers because it is the only one that can be divided by 5.


63 because 16,25,49, and 81 are perfect squares and 63 is not 

alyssa received 30,000 from an inheritance and invests in a certificate of deposit paying 5% annual interest and the rest in apple inc. offering an annual return of 11%. if the annual income from her income from her investment is 2220.00, how much did alyssa invest in each?

Answers

Since her annual return is 2220.00 as well as 11% of her investment in Apple, we can divide it by 11 and multiply that by 100 to get her investment in Apple, which would be 20181+81/99. Since she only invested in 2 things, her investment in her certificate of deposit is 30,000-(20181+81/99)=9818+18/99

Best way to work out planet torrid take 6 years to complete one orbit , planet monde blanc takes 9 years in the year 2035 both planets are lined up perfectly.

How many years will it be before the two worlds are line up again ?

Answers

so... hmmm dunno either planet, I assume they're on the solar system and therefore orbiting the same planet, the sun, or whoever.

but, in short, what I can make out is, when do 6 and 9 have the same LCM, least common multiple, or a factor that's common to both 6 and 9, and therefore meet at such.

well, let's do a prime factoring of 6, is 2 and 3 only, ok,
now a prime factoring of 9, is 3 and 3 only, ok.

now, we have 3 as common to both, so, to get an LCD or LCM, we'll use repeated factors but once only for each instance for each.

therefore   [tex]\bf \stackrel{9}{3,3}\qquad \stackrel{6}{2,3}\qquad \stackrel{LCM}{3,3,2}\implies 18[/tex]

so, after 18 years.

[tex]\bf \cfrac{6}{18}\implies \cfrac{1}{3}\impliedby \textit{torrid will be orbiting one-third of the way} \\\\\\ \cfrac{9}{18}\implies \cfrac{1}{2}\impliedby \textit{monde blanc will be orbiting half-way}[/tex]

At 3pm, Mikayla’s shadow was 1.2 meters long. Mikayla is 1.7 meters tall. She measures a tree’s shadow to be 7.5 meters. How tall is the tree?

Answers

2.5 meters is the answer
1.2 / 1.7 = 7.5 / x
cross multiply
(1.2)(x) = (1.7)(7.5)
1.2x = 12.75
x = 12.75 / 1.2
x = 10.625 meters <==

without using a calculator order the numbers from least to greatest square root of 200, 15, and 14

Answers

Least is 14 = 3.7
Next is 15 = 3.8
Largest is 200 = 14. 1

Final answer:

To order the numbers from least to greatest, estimate their square roots: 14 < 14.14 <  15.

Explanation:

To order the numbers from least to greatest, we need to compare their square roots. Without using a calculator, we can estimate the square roots to determine the order.

The square root of 200 is approximately 14.14.The square root of 15 is approximately 3.87.The square root of 14 is approximately 3.74.

Therefore, the order from least to greatest is 14 < 14.14 <  15.

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