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lina2011 [118]
4 years ago
10

Find all solutions in the interval[0,2pi) (sin x)(cos x)= 0

Mathematics
1 answer:
faust18 [17]4 years ago
3 0

Answer:

x= π or x=π/2, 3π/2

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a. A statistics class with 36 students is arranged so that there are 6 rows with 6 students in each​ row, and the rows are numbe
expeople1 [14]

Answer:

If I'm not mistaken this is a ratio so it would 6:36 or 6 to 36

Step-by-step explanation:

If Wrong I apologize

5 0
3 years ago
A team t-shirt costs $3 per adult and $2 per child. On a certain day, the total number of adults (a) and children (c) who bought
svlad2 [7]
75 adults, 25 children

4 0
4 years ago
Two cards are drawn without replacement from a standard deck of 52 playing cards. What is the probability of choosing a red card
joja [24]

Answer: \dfrac{3}{51}

Step-by-step explanation:

Given : The total number of cards in a deck = 52

Number of red cards = 26

There are two types of red  cards : diamond and heart.

Number of diamond cards = 13

The probability that the first card is a diamond :-

\dfrac{13}{52}=\dfrac{1}{4}

Since diamond is also a red card.

Now, the total cards left = 51

The number of red cards left = 12

The probability that the second card is a red card (without repetition) is given by :-

\dfrac{12}{51}

Now, the probability of choosing a red card for the second card drawn, if the first card, drawn without replacement, was a diamond :-

\dfrac{1}{4}\times\dfrac{12}{51}=\dfrac{3}{51}

7 0
4 years ago
Jose worked 2.5 hours more than William. together they worked a total of 22 hours. William worked h hours
nataly862011 [7]

I believe that the answer you're looking for is B. h+(h+2.5)=22.

h+(h+2.5)=22

h+h+2.5=22

Combine like terms.

2h+2.5=22

Subtract 2.5 from both sides.

2h=19.5

Divide both sides by 2.

h=9.75

Now let's check the work by plugging 9.75 into the equation.

9.75+(9.75+2.5)=22

9.75+9.75+2.5=22

22=22

So we now see that the answer choice <u>B.</u> Is correct! And William worked 9.75 hours. I hope that you found this helpful!

4 0
3 years ago
50 is 20% of what ? Round to the nearest tenth is needed
miv72 [106K]

Answer:

250

Step-by-step explanation:

20% of 250 is 50. 100% of 250 is 250, therefore 20 percent of 250 equals 50.

More simplified explanation: The question is asking if 50 is 20% of a number, what is the number? So we know that 20% is 1/5 of 100%; if we know that 50 is 20% of something, then we would multiply 50 by 5 to get the answer. We would have to multiply 50 by 5 because if 50 is 20% of a number that would mean that 50 is 1/5 of the number we need to find, so to find the number, you to multiply 50 by 5.

Hope this helps!

5 0
3 years ago
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