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Burka [1]
3 years ago
13

A khanacademy.org Differential equations: exponential model word problems You might need: Calculator A controversial story comes

out in the school newspaper. The number of students who have not heard about the story decreases at a rate that is proportional at any time to the number of students who have not heard the story at that time. There were 900 students who had not heard the story initially, and the number of students is divided by 3 every 4 days. How many students have not heard the story after 7 days? Round to the nearest student. students Stuck?
Mathematics
1 answer:
malfutka [58]3 years ago
4 0
The answer for this question is to be polite to people and he kind to the students .
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Please solve this problem ​
asambeis [7]

Answer:

(4) 0

Step-by-step explanation:

<u>Given:</u>

  • cos²27°×cos²34°×...×cos²167 = ?

<u>Looking at the angles measures, they form series of: </u>

  • 27, 34, 41, ..., 167

This is AP with the first term of 27 and common difference of 7

<u>We can see one of the terms of this AP is 90</u>

  • 27+9*7 = 27 + 63 = 90

Since cos 90° = 0 ⇒ cos²90° = 0 and therefore given series equals to zero as one of the terms of multiplication is zero.

<u>So correct answer choice is</u>  Option 4) 0

8 0
3 years ago
What is the greatest common factor of 22 and 2?
Snowcat [4.5K]

Answer:

2

Step-by-step explanation:

2 is 2.

22 is 2•11.

The GCF is 2.

6 0
3 years ago
A model spaceship cost 15.99 before tax the tax on the model spaceship is 8%
marysya [2.9K]

15.99 * .8 = 12.79

15.99 + 12.79 = 28.78

the answer is $28.78 :)

4 0
3 years ago
Read 2 more answers
Oh 9i is a root of the polynomial function f(x), which of the following must also be a root of f(x)? A. -9i B. -1/9i C. 1/9i D.
kotegsom [21]
The best answer is A. The possible roots of this polynomial function 9i and -9i. It is possible that this polynomial function is a quadratic equation. It has a degree of two which means there are two roots and it is possible that the positive and negative value of 9i are its roots.
6 0
3 years ago
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PLSS HELPPPPPPP IMMA FAIL
Leto [7]

Answer:

it should 3

Step-by-step explanation:

3 0
3 years ago
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