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Eddi Din [679]
3 years ago
13

30pts! Brainliest! Calculus 2!

Mathematics
1 answer:
masha68 [24]3 years ago
4 0
Substitute 1/x with u
dx = -x^2 du
-1/4 integral of e^u•du
Apply exponential rule -(e^u)/4
Undo the substitution u is 1/x
Answer is (-(e^1/x)/4 ) + C
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A company is trying out a new marketing technique that begin by asking One customer to tell three friends about a product in the
Nostrana [21]

Week 1 : 1 customer tells 3 friends

Week 2: 3 new customers tell 9 friends

Week 3: 9 new customers tell 27 friends

If w represents number of weeks, then (C) represents the model appropriately. Let's see how:

Putting w = 1 , 2 and 3 in each of the options

(A) 3w: 3 for week 1, 6 for week 2, 9 for week 3 ⇒ INCORRECT

(B) w^3: 1 for week 1, 8 for week 2, 27 for week 3 ⇒ INCORRECT

(C) 3^w: 3 for week 1, 9 for week 2, 27 for week 3 ⇒ CORRECT

(D) 3w^3: 3 for week 1, 24 for week 2, 81 for week 3 ⇒ INCORRECT

Hence, the answer is (C)


5 0
3 years ago
Read 2 more answers
In January the students in a class red 72 books in February they read 56 books what is the approximate percentage decrease in th
snow_lady [41]

Answer: -12.5%

72 + 56 = 128

72 x / 128 x 100 = 56.25

56 / 128 x 100 = 43.75

43.75 - 56.25 = - 12.5

5 0
3 years ago
Lots of point n brainliest SO help rq
nordsb [41]

Answer:

  • A. $6000

Step-by-step explanation:

Let the invested amount is x.

<u>Then the interest amount is:</u>

  • x*5*2.25/100 = 675
  • 0.1125x = 675
  • x = 675 / 0.1125
  • x = 6000

Correct choice is A

7 0
3 years ago
Pam bought a pair of shoes on sale for $22.40. If this was 20%. Off the original price, find the original price of the shoes
Rus_ich [418]

Answer:

26.88

Step-by-step explanation:

20%*22.40=4.48

22.40+4.48=26.88

3 0
2 years ago
Which is greater 5/8 or 5/12?
ElenaW [278]
5/8 is greater than 5/12
5 0
3 years ago
Read 2 more answers
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