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LenKa [72]
2 years ago
12

I NEED HELP PLEASE!!!

Mathematics
1 answer:
miss Akunina [59]2 years ago
3 0

Answer:

B

Step-by-step explanation:

cosine function, cos(ax) gets it period reduced by a factor of a, period is 2*pi/(4)=pi/2

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What is the risk of going into a group of more than 20 or more people at this time from coronavirus?
olga55 [171]

Answer:

Even if a person doesn't show symptoms, they can still have it.

Step-by-step explanation:

That's the problem.

Even if you think everyone isn't sick, they very well could be, and because there is no vaccine and it spreads so quickly, there's a chance that all the people in that group could get it.

5 0
3 years ago
Read 2 more answers
A red candle is 8 inches tall and burns at a rate of 7/10 inch per hour. a blue cans is 6 inches tall and burns at a rate of 1/5
Galina-37 [17]
Let t = number of hours

The first candle starts at 8 inches.
It burns at 7/10 inch per hour, so in t hours it burns (7/10)t inches.
After t hours, its length is 8 - (7/10)t

The second candle starts at 6 inches.
It burns at 1/5 inch per hour, so in t hours it burns (1/5)t inches.
After t hours, its length is 6 - (1/5)t

You want the lengths to be equal, so the equation is

8 - (7/10)t = 6 - (1/5)t
4 0
3 years ago
SOME ONE PLEASE HELP !!!!
Andrei [34K]

x = 20 - -5 = 20 + 5 = 25

y = 16 - 1 = 15

<h2>x = 25</h2><h2>y = 15</h2>

7 0
2 years ago
How many ways can first, second, and third place be awarded in a race of 20 people?
Volgvan
That would be 20 x 19 x 18 which equals 6840. 
After first place is chosen, 19 spots left and so on.
The answer is 6840 ways.
3 0
3 years ago
Help with this question
snow_tiger [21]

Answer:

c

Step-by-step explanation:

just take out the brackets and add the like terms.

6 0
3 years ago
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