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a_sh-v [17]
3 years ago
8

In a class of 666, there are 222 students who forgot their lunch.

Mathematics
2 answers:
pychu [463]3 years ago
8 0
Is the numbers just 6, 2 and 2 if those are the numbers the answer is 1/15
pav-90 [236]3 years ago
5 0

Answer:

1/15

Step-by-step explanation:

  • The probability that the first student has forgotten their lunch is 2/6.
  • Since there are only 5 students left the probability that the second student that is picked and has forgotten their lunch is 1/5.
  • 2/6*1/5=2/30=1/15\\
You might be interested in
Find the terminal point on the unit circle determined by pi radians.
svet-max [94.6K]

Answer:

Terminal points

(x,y) = (\frac{1}{\sqrt{2} }) , (\frac{-1}{\sqrt{2} })

Step-by-step explanation:

According to the question, it is provided that

\theta = \frac{7\pi}{4}

Now

x = 1. cos (\frac{7\pi}{4})\\\\ = cos (2\pi - \frac{\pi}{4})\\\\= cos \frac{\pi}{4} \\\\= \frac{1}{\sqrt{2} }

y = 1. sin (\frac{7\pi}{4})\\\\ = sin (2\pi - \frac{\pi}{4})\\\\= -sin \frac{\pi}{4} \\\\= \frac{-1}{\sqrt{2} }

Now

(x,y) = (\frac{1}{\sqrt{2} }) , (\frac{-1}{\sqrt{2} })

These two represents the terminal points

We simply applied the above equations and then equate these two equations to determine the terminal points and therefore the same is to be considered

It could be figure out by using the x and y points

Therefore the two shows the terminal points

3 0
3 years ago
15(x -20)-21= -3(x+1)+6
jeyben [28]

Answer:

x = 18

Step-by-step explanation:

Solve for x:

15 (x - 20) - 21 = 6 - 3 (x + 1)

Hint: | Distribute 15 over x - 20.

15 (x - 20) = 15 x - 300:

15 x - 300 - 21 = 6 - 3 (x + 1)

Hint: | Group like terms in 15 x - 300 - 21.

Grouping like terms, 15 x - 300 - 21 = 15 x + (-300 - 21):

15 x + (-300 - 21) = 6 - 3 (x + 1)

Hint: | Evaluate -300 - 21.

-300 - 21 = -321:

15 x + -321 = 6 - 3 (x + 1)

Hint: | Distribute -3 over x + 1.

-3 (x + 1) = -3 x - 3:

15 x - 321 = -3 x - 3 + 6

Hint: | Group like terms in -3 x - 3 + 6.

Grouping like terms, -3 x - 3 + 6 = (6 - 3) - 3 x:

15 x - 321 = (6 - 3) - 3 x

Hint: | Evaluate 6 - 3.

6 - 3 = 3:

15 x - 321 = 3 - 3 x

Hint: | Move terms with x to the left hand side.

Add 3 x to both sides:

15 x + 3 x - 321 = (3 x - 3 x) + 3

Hint: | Look for the difference of two identical terms.

3 x - 3 x = 0:

15 x + 3 x - 321 = 3

Hint: | Group like terms in 15 x + 3 x - 321.

Grouping like terms, 15 x + 3 x - 321 = (15 x + 3 x) - 321:

(15 x + 3 x) - 321 = 3

Hint: | Add like terms in 15 x + 3 x.

15 x + 3 x = 18 x:

18 x - 321 = 3

Hint: | Isolate terms with x to the left hand side.

Add 321 to both sides:

18 x + (321 - 321) = 321 + 3

Hint: | Look for the difference of two identical terms.

321 - 321 = 0:

18 x = 3 + 321

Hint: | Evaluate 3 + 321.

3 + 321 = 324:

18 x = 324

Hint: | Divide both sides by a constant to simplify the equation.

Divide both sides of 18 x = 324 by 18:

(18 x)/18 = 324/18

Hint: | Any nonzero number divided by itself is one.

18/18 = 1:

x = 324/18

Hint: | Reduce 324/18 to lowest terms. Start by finding the GCD of 324 and 18.

The gcd of 324 and 18 is 18, so 324/18 = (18×18)/(18×1) = 18/18×18 = 18:

Answer: x = 18

8 0
3 years ago
10pts FOR WHEVER ANWSERS ASAP PLZ!!
mojhsa [17]

Answer:

B.

Step-by-step explanation:

Both sides of equation are the same, making the amount of solutions infinite.

3 0
3 years ago
Philip has $2,000 and spends $23.75 on supplies. He divides the remaining amount equally among his 8 employees. How much does ea
ziro4ka [17]
(2000 - 23.75) / 8 = 
1976.25 / 8 =
247.03 per employee <==
8 0
3 years ago
Read 2 more answers
I need a prediction about 3/162 being a terminating or non terminating number could someone help?
3241004551 [841]

Answer:

5+5=10

Step-by-step explanation:

your welcome:)

6 0
2 years ago
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