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Dafna11 [192]
3 years ago
8

What is the square root of –16? A. –8i B. –4i C. 4i D. 8i

Mathematics
2 answers:
hichkok12 [17]3 years ago
6 0

Answer:

C. 4i

Step-by-step explanation:

\sqrt{-16} = \sqrt{16} \sqrt{-1} (because \sqrt{ab} =\sqrt{a} \sqrt{b})

Since \sqrt{16}=4, and \sqrt{-1}=i, \sqrt{-16}=4i

lesya692 [45]3 years ago
5 0

Answer:

C. 4i

Step-by-step explanation:

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3 0
4 years ago
Can someone help me plead
andrew-mc [135]

Answer:

a. 2^3

b. 3^4

c. 4^3 × 5^2

d. 9^4 × 7^2

Step-by-step explanation:

The following equations are given

a. 2 × 2× 2

b. 3 × 3 × 3 × 3

c. 4 × 4 × 4 × 5 × 5

d. 9 × 7 × 9 × 9 × 7 × 9

We need to find the index notation for the above equations

a. 2^3

b. 3^4

c. 4^3 × 5^2

d. 9^4 × 7^2

In this way it should be done

The same would be relevant

4 0
3 years ago
The sum of two numbers is 3. Five times the larger number plus four times the smaller number is 29. Find the numbers
gulaghasi [49]
Let's have two numbers x (larger) and y (smaller). from the info above...

x + y = 3
5x + 4y = 29

so that means y=3 - x. we can sub this in
5x + 4(3-x) = 29
5x + 12 - 4x = 29
x = 17
then y=3-x=3-17=-14

so it's 17 and -14



7 0
4 years ago
Read 2 more answers
YOOOOO PLS PLS SOMEONE WHAT IS 10-5 PLS I NEED IT QUICK FOR MY TEST
katrin2010 [14]
The answer is 5

Explanation:

10 - 5 = 5
8 0
3 years ago
Read 2 more answers
Tegan takes 23 minutes to walk to work. After getting a new
11Alexandr11 [23.1K]

Answer:

18.66 minutes or 18 minutes 39.6 seconds

Step-by-step explanation:

23 x .19 = 4.37

23 - 4.37 = 18.66 minutes

8 0
3 years ago
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