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sesenic [268]
2 years ago
15

The number of people using an older version of a spreadsheet program decreases at a rate that is proportional at any time to the

number of people still using the version at that time.
There were 10,000 people using the older version of the spreadsheet program when the new version first came out. The number of people still using the older version decreases by 20%, percent every 6 months.
Mathematics
1 answer:
Paraphin [41]2 years ago
8 0

Answer:

5842 people after 2 months

Step-by-step explanation:

Given

Initial Value: a =10000

Rate: r = 20\% every 6 months

Required

Number of people using it after 2 months

The function follows an exponential model.

So, we need to first write out the function.

If Rate: r = 20\% every 6 months

Then

Rate: r = 40\% after 1 year

r = 0.04

The function is represented as:

y = ar^x

So:

y = 10000 * 0.04^t

For 2 months, we have:

t = 2\ months

Convert to years

t = \frac{2}{12}

t = 0.167

y = 10000 * 0.04^t

y = 10000 * 0.04^{0.167}

y = 5842

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romanna [79]

If he answered 3 questions correctly, then the number of questions is got wrong is 7 and the number of questions that he did not attempt is 5.

<h3>What is the linear system?</h3>

A linear system is one in which the parameter in the equation has a degree of one. It might have one, two, or even more variables.

In a class test of 15 questions, (+4) marks are given for every correct answer, (– 2) marks are given for every incorrect answer, and 0 marks are given for questions that are not attempted. Punit scored (– 2) marks.

If he answered 3 questions correctly, then the number of the question are got wrong and the number of the question that he did not attempt.

Let x be the correct question and y be the incorrect question, z be the number of questions that he did not attempt, and A be the number of the total score. Then we have

4x – 2z = A

x + y + z = 15

If A = -2 and x = 3, then we have

4 × 3 – 2z = -2

      12 + 2 = 2z

              z = 7

Then the value of y will be

3 + y + 7 = 15

           y = 5

More about the linear system link is given below.

brainly.com/question/20379472

#SPJ1

3 0
2 years ago
Will give brainliest to correct answer! Given that cos Ф=-8/17 and sin Ф is negative, determine the value of tan Ф.
Kipish [7]

Answer: option 3 is the correct answer

Step-by-step explanation:

Let us look at the various trigonometric ratios

Sin Ф = opposite side/ hypotenuse

Cos Ф = adjacent side / hypotenuse

Tan Ф = opposite side / adjacent side

Therefore, tan Ф = sin Ф / cos Ф

This means that if cos Ф=-8/17 and sin Ф is negative, then the hypotenuse is negative

To determine the adjacent side, we will apply Pythagoras theorem

Hypotenuse ^2 = opposite ^2 + adjacent ^2

-17^2 = 8^2 + adjacent^2

adjacent^2 = 289 - 64 = 225

adjacent = √225 = 15

tan Ф = 8/15

5 0
3 years ago
Which expression is equivalent to 3m1-m?<br> A) 2+m-1+m<br> B) 1+m<br> C) 3m-1<br> D) 3m
valkas [14]

Answer:

C

Step-by-step explanation:

5 0
2 years ago
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Choose the similarity statement
Fofino [41]

Answer:

ΔMLN - ΔΡQO

Step-by-step explanation:

  • LMN change to MLN
  • OPQ change to PQO

Therefore,due to the correct pattern ΔMLN - ΔΡQO is correct.

3 0
3 years ago
A store has 40% off sale on headphones. With this discount, the price of one pair of headphones is $36.00
Nataliya [291]

40 % off means we pay 60 %  (must total 100%)

original price * 60 % = 36.00

change percent to decimal

original price * .6 = 36

divide each side by .6

orginal price = 60


7 0
3 years ago
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