1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Pani-rosa [81]
3 years ago
7

Multiply and simplify -12i x 3i

Mathematics
2 answers:
otez555 [7]3 years ago
8 0
-36i^2 because -12 X 3= -36 and i X i = i^2
Lubov Fominskaja [6]3 years ago
3 0
-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
You might be interested in
Initially a pool contains 350 gallons of water. A hose is placed in the pool and the water is turned on. The hose adds 5.2 gallo
Sedaia [141]
The answer is D because to get the total amount of water from the hose in x minutes, you would have to multiply the gallons per minute with the amount of minutes, or x, and so you would have 5.2x. But, we have to include the existing water in the pool. So, we would get V(x) = 5.2x + 350
5 0
3 years ago
Read 2 more answers
QUICK!
RideAnS [48]

Answer:

yes at negative x-coordnintn

Step-by-step explanation:

8 0
2 years ago
The proportion of junior executives leaving large manufacturing companies within three years is to be estimated within 3 percent
Leona [35]

Answer: 709

Step-by-step explanation:

The formulas we use to find the required sample size :-

1. n=(\dfrac{z^*\cdot \sigma}{E})^2

, where \sigma = population standard deviation,

E = Margin of error .

z* = Critical value

2. n=p(1-p)(\dfrac{z^*}{E})^2 , where p= prior estimate of population proportion.

3. If prior estimate of population proportion is unavailable , then we take p= 0.5 and the formula becomes

n=0.25(\dfrac{z^*}{E})^2

Given : Margin of error : E= 3% =0.03

Critical value for 95% confidence interval = z*= 1.96

A study conducted several years ago revealed that the percent of junior executives leaving within three years was 21%.

i.e. p=0.21

Then by formula 2., the required sample size will be :

n=0.21(1-0.21)(\dfrac{1.96}{0.03})^2

n=0.21(0.79)(65.3333)^2

n=(0.1659)(4268.44008889)\\\\ n=708.134933333\approx709 [Round to the next integer.]

Hence, the required sample size of junior executives should be studied = 709

4 0
4 years ago
Write a polynomial that represents the are of the square
STatiana [176]

Answer:

<h2>16c² + 32cd + 16d²</h2>

Step-by-step explanation:

Area = (4c + 4d)×(4c + 4d)

        = 16c² + 16cd + 16dc + 16d²

        = 16c² + 32cd + 16d²

6 0
3 years ago
An annual zoo pass costs $43.25 per person. If the zoo earned $3762.75 by selling passes, write an
vfiekz [6]
$43.25 (p) = $3762.75 87 people bought a pass
6 0
3 years ago
Other questions:
  • How do I graph this? Also what’s the slope?
    14·1 answer
  • Which of the following about carbon sinks is not true
    7·1 answer
  • Ricky wrestles for his school team and wants to increase his weight by 10%. His current weight is 140 pounds. How much weight do
    8·2 answers
  • Can anyone help me with this? I need to prove that line BE bisects angle DBC
    5·2 answers
  • what are the minimum first quartile median third quartile and the maximum of the data set? 9,20,4,18,4,18,20,9
    12·1 answer
  • If a temperature in degrees Celsius is given as C, finding the sum of 1.8 times C and 32 gives the temperature in degrees Fahren
    5·2 answers
  • Please help now!!!!!!!!!!!!!!!!!!!!!!!!!
    6·1 answer
  • Will give brainliest to correct answer!
    7·2 answers
  • PLEASE HELP I WILL GIVE BRAINLIEST:)
    12·2 answers
  • Which set of number cannot represent the lengths of the sides of a triangle?
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!