MATHEMATICS HIGH SCHOOL

Multiply and simplify the product.–12i × 3i
Select the product.

a.36

b. -36

c. 36i

d. -36i

Answers

Answer 1
Answer:

The multiplication and simplification of the polynomial –12i × 3i gives 36

What is a complex number?

A complex number is a number of the form a + bi, where a and b are real numbers, and i = √-1

i² = (√-1)² = -1

Given the complex number:

–12i × 3i

multiplying and simplifying gives:

= -36 * i² = -36 * -1 = 36

The multiplication and simplification of the polynomial –12i × 3i gives 36

Find out more on complex number at: brainly.com/question/10662770

#SPJ2
Answer 2
Answer: Hello,
(-12i)*(3i)=-36i²=36
Answer A

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2.28 kg is
% of 600 g.

Answers

Answer:

380%

Step-by-step explanation:

2.28kg = 2280g

2280 = 600n

Divide both sides by the 600

2280 /600 = 600n /600

3.8 = n

Turn 3.8 into a percentage

3.8

= 38/10

= 380/100

= 380%

If this helped, please mark this answer as the Brainliest Answer. Thank you!

PLEASE HELP !!! Which polygon is a concave octagon?

Answers

The correct answer is:

C. The polygon with 8 sides and a concave shape (attached)

|Huntrw6|

The area of a rectangle is 6x^3 – 30x^2. What is the length of the rectangle if the width is 2x(x – 5)?

Answers

x^2 + 8x +15 is the area

x+5 is the length

x+3 is the width

(x+5)(x+3)=

x^2 + 3x +5x +15

x^2 +8x + 15


Hope this helped!!!!

So since the area of a rectangle is A=bh, we just need to form our equation off of that. Our equation will look like this: l*2x(x-5)=6x^3-30x^2


Firstly, divide both sides by 2x(x-5): l=(6x^3-30x^2)/(2x(x-5))


Next, factor 6x^3-30x^2: l=(6x^2(x-5))/(2x(x-5))


Next, cancel out (x-5): l=(6x^2)/(2x)


Next, expand 6x^2: l=(3*2*x^2)/(2x)


Next, divide and your answer will be: l=3x

Please, solve this exercice:1+2+2²+2³+2⁴+....+ 2²⁰¹¹

It can be solved by using geometric progression?

Answers

1+2+2^2+2^3+2^4+...+2^(2011)\n\na_1=1;\ a_2=1\cdot2=2;\ a_3=2\cdot2=2^2;\ a_4=2^2\cdot2=2^3\n\vdots\na_(2012)=2^(2010)\cdot2=2^(2011)

The\ sum\ of\ a\ terms\ of\ geometric\ progression:S_n=(a_1(1-r^n))/(1-r)\n\na_1=1;\ r=2\n\nsubtitute:\n\nS_(2012)=(1(1-2^(2012)))/(1-2)=(1-2^(2012))/(-1)=2^(2012)-1\n\nOnly\ that...(606\ digits,\ if\ you\ want\ how\ length\ this\ number)

What is the value of the expression? 300 + 34 – 8 · 2
A. 746
B. 608
C. 365
D. 296

Answers

Asking the Math Gods...

you have no valid choices

300+34-(8*2)
=334-16
=318

I need help with 2,3, and 4.
Explain the answers too thx

Answers

Answer:

2. G

3. Plane AGH

4. Four planes

Step-by-step explanation:

2. G is the correct answer. Planes ABC and ABI cross intersect at line AB

3. Plane AGH is parallel to the plane containing line EF

4. There are 4 planes perpendicular. Planes DCJ, DCB, BIH, and JIH are all connected to the front plane and are all parallel.
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