1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Usimov [2.4K]
3 years ago
10

1. Identify each situation in which a quantity grows or decays by a constant percent rate per unit interval. A. The number of ca

rs sold doubles every year. B. The value of a boat decreases by $3000 every 2 years. C. The number of visitors at the Zoo increases by 1,000 each year. D. Each time you start a car engine the remaining engine life decreases by 0.0075%. E. The number of people creating cat videos increases by 15% percent every year. F. Computer technology increases by a factor of 3 every five years. 2. A block of ice weighing 50 kilograms begins to melt. Each hour the block of ice loses 10% of its weight. Let W be the weight in kilograms after melting for t hours. Describe the relationship between W and t?
Mathematics
1 answer:
zvonat [6]3 years ago
3 0

Answer:

Step-by-step explanation:

1) For each situation to grow or decay by a constant percent rate, it must be exponential. Therefore, the correct examples are

A. The number of cars sold doubles every year. It is a 200% growth every year.

D. Each time you start a car engine the remaining engine life decreases by 0.0075%. A case of decay

E. The number of people creating cat videos increases by 15% percent every year.

F. Computer technology increases by a factor of 3 every five years.

2) this is a case of exponential decay. The expression for exponential decay is

y = b(1 - r)^t

y = final value

b = initial value

r = decay rate

t = time

Given that

r = 10% = 10/100 = 0.1

b = 50 kilograms

y = W kilograms

The relationship is

W = 50(1 - 0.1)^t

W = 50(0.9)^t

You might be interested in
3. Approximate square root v15
baherus [9]

Answer:

<h2>4</h2>

Step-by-step explanation:

\sqrt{15}\\=3.87298\dots \\\\= 4

4 0
3 years ago
Lenox ironed 1/4 of the shirts over the weekend. she plans to split the remainder of the work equally over the next 5 evenings.
Arisa [49]
I'm not sure if I'm right but I got 21 don't depend on me to get ur answer correct tho Bc I'm not sure
3 0
3 years ago
Do this and I’ll pay u I need help
frutty [35]

Answer:

69

"bring me my money"

Step-by-step explanation:

8 0
3 years ago
What is the radius of a circle whose equation is x2 + (y – 8)2 = 25?
Dafna11 [192]
Use photo math :) and you will get your answer
8 0
3 years ago
Read 2 more answers
Using the digits 2 through 8, find the number of different 5-digit numbers such that, digits can be used more than once.
Solnce55 [7]

Answer:

7 digits can be used for each position

There are a total of 5 positions

N = 7^5 = 16,807 numbers

You have 7 choices for the first position, second position, etc.

7 0
3 years ago
Other questions:
  • Do you can download 20 songs in five minutes how long does it take to download one song
    10·2 answers
  • Alexis spends 4 hours a day watching tv. how many seconds does she watch tv in a week
    14·1 answer
  • What’s the correct answer for this question?
    14·1 answer
  • In a recent study, researchers found that 31 out of 150 boys aged 7-13 were overweight or obese. On the basis of this study can
    11·1 answer
  • What is half of the sum of 5 and the number p?
    9·2 answers
  • We are interested in finding an estimator for Var (Xi), and propose to use V=-n (1-Xn). 0/2 puntos (calificable) Now, we are int
    12·1 answer
  • Find the measure of each interior angle of the shown figure *​
    12·2 answers
  • Given f(x)=3(2-x)+5 what is the value of f(-5)?
    9·1 answer
  • Evaluate the following expression: 12 – 10 + 5 - 11. Remember to show your work
    12·1 answer
  • Type your answers into the boxes.
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!