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eduard
3 years ago
15

Help I really need help

Mathematics
2 answers:
mylen [45]3 years ago
8 0
Ok well I will send it you your phone number I can text
Mekhanik [1.2K]3 years ago
3 0
Photo has the answer

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The water level in a lake was 22 inches below normal at the beginning of March. The water level decreased by 3 1/6 inches in Mar
Vinvika [58]
At the beginning it was 22 inches below normal (-22).
Then it decreased by 3 1/6 (-19/6).
Then increased by 1 6/7 (+13/7)

-22 - 19/6 + 13/7
-924/42 - 133/42 + 78/42
-1057/42 + 78/42
-979/42
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It was 23 13/42 inches below normal after April.
8 0
4 years ago
What is the sum of the complex numbers 2 + 4i,and 3 − 7i, where i=-1
Elodia [21]

Answer:

5 - 3i.

Step-by-step explanation:

2 + 4i + 3 - 7i       Bring like terms together:

= 2 + 3 + 4i - 71

= 5 - 3i.

5 0
2 years ago
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Explain how using basic facts can help you find 10×20×30×40 mentally?
Katena32 [7]
So all you have to do is take the first numbers of each multiple and multiply them. 
1 x 2 x 3 x 4 = 24 
Now you just add the 4 zeros to your answer. 
240,000 

Our answer even checks! 
10 x 20 x 30 x 40 = 240,000 

Good Luck! :)
3 0
4 years ago
Round 20.86 to the nearest tenth<br><br> 20<br> 20.8<br> 20.86<br> 20.9
stealth61 [152]

Answer:

20.9 is the answer because To round 20.86 to the nearest tenth consider the hundredths’ value of 20.86, which is 6 and equal or more than 5. Therefore, the tenths value of 20.86 increases by 1 to 9. 20.86 rounded to the nearest tenth = 20.9

6 0
3 years ago
HELP QUICK - I WILL MARK YOU BRAINLY
-BARSIC- [3]

Answer:

perimeter goes with the one that has 5x^2

i dont know the second im sorry

Step-by-step explanation:

8 0
3 years ago
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