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Mandarinka [93]
3 years ago
8

Answer, please. I need help.

Mathematics
2 answers:
kumpel [21]3 years ago
4 0

Answer:

2i, if you don't understand any of the steps let me know, I'd be happy to explain.

Step-by-step explanation:

\sqrt{-x} =\sqrt{-1*x} ,\sqrt{xy}=\sqrt{x} \sqrt{y},   \sqrt{-1}=i

so in order -4 = -1 * 4 so then \sqrt{-1*4}=\sqrt{-1} \sqrt{4} then just solve each

qaws [65]3 years ago
4 0

Answer:

undefined

Step-by-step explanation:

because you can be negative in square root.

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Ted can change an advertisement on a billboard in 5hr. Marie can do the same job in 2hr. How long would it take them if they wor
AnnyKZ [126]

Answer:

Working together, they will finish the job in 1 hour, 25 minutes, and 42.6 seconds.

Step-by-step explanation:

Given that Ted can change an advertisement on a billboard in 5 hours, while Marie can do the same job in 2 hours, to determine how long it would take them if they worked together the following calculation must be performed:

Ted 1/5 in 1 hour

Marie 1/2 in 1 hour

1/5 + 1/2 = X

5X + 2X = 10

7X = 10

X = 10/7

X = 1 3/7

60/7 x 3 = 25.71

60 x 0.71 = 42.6

So, working together, they will finish the job in 1 hour, 25 minutes, and 42.6 seconds.

5 0
3 years ago
Find the equation of the line that contains the given point and has the given slope.P(−1, 7), m = −3
DENIUS [597]

Answer:

y = -3x+4

Step-by-step explanation:

y = -3x+b

7=-3(-1)+b

7=3+b

4=b

8 0
3 years ago
Which of the following number 1001,1002,1004 will be the sum of 994 and a 2 digit number
katrin [286]

The number that will be the sum of 994 and a 2 digit number is 1004 (option 3). Details about digits of numbers can be found below.

<h3>What is a 2-digit number?</h3>

A digit is the whole numbers from 0 to 9 and the arabic numerals representing them, which are combined to represent base-ten numbers.

A 2-digit number is any number between 10 and 99.

According to this question, 994 is said to be added to a 2 digit number to result into either 1001, 1002 or 1004.

  • 1001 - 994 = 7 (1 digit)
  • 1002 - 994 = 8 (1 digit)
  • 1004 - 994 = 10 (2 digit)

Therefore, the number that will be the sum of 994 and a 2 digit number is 1004.

Learn more about number at: brainly.com/question/17429689

#SPJ1

8 0
2 years ago
Find the radius or diameter of each circle with the given dimensions. d=18 in.
Dovator [93]

Answer

If d equals diameter the radius is 9

Step-by-step explanation:

5 0
3 years ago
Help me plzzz!! I need to get this right.
NARA [144]

The formula for circumference is

C=(pi)d

11304=(pi)d

assume pi is 3.14

rearrange formula

d= c / (pi)

= 11304 / 3.14

d= 3600

3 0
3 years ago
Read 2 more answers
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