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Katena32 [7]
2 years ago
7

Solve using the square root property.X^2=-12

Mathematics
1 answer:
Alla [95]2 years ago
5 0

Answer:

x = ± 2i\sqrt{3}

Step-by-step explanation:

note that \sqrt{-1} = i

x² = - 12 ( take square root of both sides )

x = ± \sqrt{-12} = ± \sqrt{4(3)(-1)} = ± 2i\sqrt{3}

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12.36% I think sorry if its wrong ;-;


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3 years ago
Suppose a 5-digit number is formed using the digits from 1 to 9 (without replacement). What is the probability that it will be a
zhuklara [117]

Answer:

  1. First take 5 empty. Digits.
  2. The no of digits are 9 (1-9).
  3. The last no must be even so . The total no of even no’s . Are 4 (2,4,6,8)
  4. The probability of last digit is 4
  5. There are remaing 8 digits so. Place them where. U required. The probability are. 8, 7,6,5(no reputations)
  6. The final answer is 4*8*7*6*5=6720 ways

6 0
2 years ago
Read 2 more answers
a carton contains soup cans weighing a total of 20 pounds. Each can weighs 1-1/4. How many cans does the carton contain?
il63 [147K]
This is a division problem.

20 divided by 1 1/4

20/(1 1/4) = 20/(5/4) = 20/1 * 4/5 = 80/5 = 16

There are 16 cans.
7 0
4 years ago
Last month customers at a gift shop bought 40 birthday cards, 19 congratulation cards, 20 holiday cards, 21 thank you cards, sup
Lena [83]

Answer:50 customers would be expected to buy birthday cards next month.

Step-by-step explanation:

Last month customers at a gift shop bought 40 birthday cards, 19 congratulation cards, 20 holiday cards, 21 thank you cards. The total number of greeting cards that the customers bought last month would be

40 + 19 + 20 + 21 = 100

Percentage of customers that bought birthday cards last month would be

40/100 × 100 = 40%

supposed 125 customers by greeting cards next month, the expected number of customers that would buy birthday cards next month would be

40/100 × 125 = 50

4 0
3 years ago
Find the value of P.
bearhunter [10]
Solution is lr =Al
=(5p-8)= (2p+22)
=5p-8 =2p+22
=5-2p= 22+8
=3p= 30
P=30/3= 10 so p =10
3 0
2 years ago
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