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3 years ago

In a school there are 60 teachers and 1200 students

Mathematics

1 answer:

Rufina [12.5K]3 years ago

4 0

Answer:

409

Step-by-step explanation:

We first take the number of bilingual students 1200 * 0.3 = 400

Then the number of teachers 60 * 0.15 = 9

Add the two together and you have your answer

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Scott is on his school's academic team. On average, it takes Scott 4 minutes, with a standard deviation of 0.25 minutes, to solv

uysha [10]

Answer:

15.87% is the chance that Scott takes more than 4.25 minutes to solve a problem at an academic bowl.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 4 minutes

Standard Deviation, σ = 0.25 minutes

We standardize the given data.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

P(more than 4.25 minutes to solve a problem)

$P( x > 4.25) = P( z > \displaystyle\frac{4.25 - 4}{0.25}) = P(z > 1)$

$= 1 - P(z \leq 1)$

Calculation the value from standard normal z table, we have,

$P(x > 4.25) = 1 - 0.8413 = 0.1587 = 15.87\%$

Thus,15.87% is the chance that Scott takes more than 4.25 minutes to solve a problem at an academic bowl.

8 0

3 years ago

Please help with this SAT question. A solution gets Brainliest!

baherus [9]

Answer:

<h2>i think C</h2>

hope its help

C is my answer

3 0

2 years ago

This is really confusing. Thanks for helping.

Mandarinka [93]

Count change of signs to tell positive roots
then replace x with -x and evaluate, then count change in sign for negative roots

initially
+, -, -, +, +, -
3 changes
3 or 1 positive roots

replacing x with -x
-,-,+,+,-,-
2 changes
2 or 0 negative roots

B is answer

5 0

3 years ago

I need help..................

Angelina_Jolie [31]

1.0 2.39 3.3 4.-17 5.. 15 6. -24 7. 43 8. 39 9. -11 10.-17

5 0

3 years ago

Read 2 more answers

Pls help asap!!!!!!!!

wel

Answer:

It is possible, because the two shortest sides have to add up to be more than the longest side, and 8 + 12 = 20, which is more than the longest side of 17.

So yes, I agree with Bear.

3 0

3 years ago