40 PTS+ BRAINLY IF CORRECT
2 answers:
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The values are 5i, -4, 2√2i, -16, -50i and i.
<h3>What is an imaginary number?</h3>An imaginary number is a number that, when squared, has a negative result, and is defined by its property i² = −1 or i = √-1.
Given are numbers,
1) √-25 = √25*√-1 = 5i
2) √-2√-2 = 2i*2i = 4i² = -4
3) √-8 = √8*√-1 = 2√2i
4) (4i)² = 16*i² = -16
5) (2i)(5i)² = 2i*25i² = 50i³ = -50i
6) i²*i³* = -1*(-i)*1 = i
Hence, The values are 5i, -4, 2√2i, -16, -50i and i.
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Answer:
- The mean length of 10 children's big finger is 8.1 cm
Average length of all the 10 children's finger is (8.1×10) cm = 81 cm.
- The mean length of 11 adult's big finger is 14.1 cm
Average length of all the 11 adult's big finger is (14.1×11) cm =155.1
- Mean length of these 21 people's big finger is
- Hence, <em><u>11.24</u></em> is the right answer.
The expression for (r-s)(x) is found by subtracting s from r. That difference is 
. The expression for (r+s)(x) is found by adding them, which is 
. Now we are told to evaluate (r*s)(x) which means they want us to multiply those and state the "new" expression that results. 
. There you go!