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Anna [14]
3 years ago
13

What is (-1)⁶? O A. -i O B.-1 O C. 1 O D. i​

Mathematics
1 answer:
Svetlanka [38]3 years ago
3 0
The answer would be : C) 1
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Six men completed a task in 24 hrs and 48 min. How long, in hours and minutes, would it take four men to complete the same task?
igor_vitrenko [27]

Answer:

It would take 4 men 37 hrs and 12 mins to complete the same task.

step-by-step explanation:

Let X be the time the four men would use to complete the task.

From the question, 6 men completed a task in 24 hrs and 48 mins

But

24 \: hrs \: 48 \: mins = 24(60mins) + 48 \: mins=1488 \: mins

Using ratio and proportion

6 \: men:1488 \: mins

4  men:x\:mins

if more, less divides and if less, more divides.

4 men required more time to complete the task

Hence:

x =  \frac{6}{4} \times 1488 \: mins

x = 2232 \: mins

x = 37 hrs 12 mins

5 0
3 years ago
Using factoring, which values are the solutions to the quadratic equation 2m2+7m−30=0?
Luden [163]

Answer:

B: m = -6 or m = 5/2

Explanation:

\rightarrow \sf 2m^2 +7m - 30 = 0

<u>breakdown</u>

\rightarrow \sf 2m^2 +12m -5m- 30 = 0

<u>take out common factor</u>

\rightarrow \sf 2m(m +6) -5(m+ 6) = 0

<u>collect into groups</u>

\rightarrow \sf (2m -5)(m+ 6) = 0

<u>set to zero</u>

\rightarrow \sf 2m -5=0, \ m+ 6 = 0

<u>change sides</u>

\rightarrow \sf m=2.5, \ m= -6

8 0
2 years ago
Read 2 more answers
Simplify<br><br> 5 by 6 - 1 by 2 + 2 by 3
charle [14.2K]
I think the answer is 1
5 0
2 years ago
Show that x=2 is a solution of the equation X^3-x-6
My name is Ann [436]

Answer:

x = 2 is the solution of x^3 - x - 6

Step-by-step explanation:

(x^3) - x - 6 = 0

If x = 2,

--> (2^3) - 2 - 6

= 8 - 2 - 6 = 8 - 8 = 0.

6 0
4 years ago
Ana and Jesse are scuba diving. Ana is 35 meters below the surface of the water, and Jesse is 8 meters directly below her. What
egoroff_w [7]

Answer:

The answer is 43 meters below the water.

Step-by-step explanation:

Ana is 35 meters below the water's surface, so if Jesse is 8 meters below her, you would add 8 to 35 and end up with 43 meters below the surface of the water.

4 0
3 years ago
Read 2 more answers
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