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
jekas [21]
3 years ago
14

The price of gourmet coffee beans at the corner market has increased 10% per year over the past several years if the current cos

t is $40 per pound what did a pound of gourmet beans cost two years ago
Mathematics
2 answers:
hichkok12 [17]3 years ago
6 0

Answer: $32.4

Step-by-step explanation:

Given : The price of gourmet coffee beans at the corner market has increased 10% (0.1) per year over the past several years.

The current cost is $40 per pound .

The exponential decay equation is given by :-

y=A(1-r)^x, where r is the rate of decay and A is the initial amount and x is the time period.

Put A = 40 , r= 0.1 and t=2, we get

y=40(1-0.1)^2=\$32.4

Hence, the cost of  a pound of gourmet beans two years ago= $32.4

Anarel [89]3 years ago
4 0
$20 because 10% of 40 is 10 and the price now is 40 so 2 years before would have been 20
You might be interested in
Can someone tell me what “increase s by 2s” is
Kryger [21]

Answer:

It means goes up by twos for example 2,4,6,8 all those numbers increase by 2s.

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
How to solve 3+p=8 step by step
AURORKA [14]
3+p=8
-p      -p
3=8-p
-8 -8
-5=-p
swap signs
5=p
5 0
3 years ago
Read 2 more answers
Three populations have proportions 0.1, 0.3, and 0.5. We select random samples of the size n from these populations. Only two of
IRINA_888 [86]

Answer:

(1) A Normal approximation to binomial can be applied for population 1, if <em>n</em> = 100.

(2) A Normal approximation to binomial can be applied for population 2, if <em>n</em> = 100, 50 and 40.

(3) A Normal approximation to binomial can be applied for population 2, if <em>n</em> = 100, 50, 40 and 20.

Step-by-step explanation:

Consider a random variable <em>X</em> following a Binomial distribution with parameters <em>n </em>and <em>p</em>.

If the sample selected is too large and the probability of success is close to 0.50 a Normal approximation to binomial can be applied to approximate the distribution of X if the following conditions are satisfied:

  • np ≥ 10
  • n(1 - p) ≥ 10

The three populations has the following proportions:

p₁ = 0.10

p₂ = 0.30

p₃ = 0.50

(1)

Check the Normal approximation conditions for population 1, for all the provided <em>n</em> as follows:

n_{a}p_{1}=10\times 0.10=1

Thus, a Normal approximation to binomial can be applied for population 1, if <em>n</em> = 100.

(2)

Check the Normal approximation conditions for population 2, for all the provided <em>n</em> as follows:

n_{a}p_{1}=10\times 0.30=310\\\\n_{c}p_{1}=50\times 0.30=15>10\\\\n_{d}p_{1}=40\times 0.10=12>10\\\\n_{e}p_{1}=20\times 0.10=6

Thus, a Normal approximation to binomial can be applied for population 2, if <em>n</em> = 100, 50 and 40.

(3)

Check the Normal approximation conditions for population 3, for all the provided <em>n</em> as follows:

n_{a}p_{1}=10\times 0.50=510\\\\n_{c}p_{1}=50\times 0.50=25>10\\\\n_{d}p_{1}=40\times 0.50=20>10\\\\n_{e}p_{1}=20\times 0.10=10=10

Thus, a Normal approximation to binomial can be applied for population 2, if <em>n</em> = 100, 50, 40 and 20.

8 0
3 years ago
How much trail mix will each person get if 5 people share 1 pound of trail mix?
JulijaS [17]

1\5 pound of trail mix because 1 pound divided to\by 5 people is 1\5.
So, each person gets 1\5 pound trail mix

5 0
3 years ago
Read 2 more answers
Pen are shipped to the office supply store in boxes of 12 each. Write a function rule to calculate the total number of pens when
Tom [10]

p = 12x is the  function rule to calculate the total number of pens when you know the number of boxes

<em><u>Solution:</u></em>

Given that,

Pen are shipped to the office supply store in boxes of 12 each

To find: Write a function rule to calculate the total number of pens when you know the number of boxes

Let "p" be the total number of pens

Let "x" be the number of boxes

Number of pens in each box = 12

Then from given information,

Total number of pens = Number of boxes multiplied by number of pens in each box

p = x \times 12\\\\p = 12x

Thus the function rule is found

6 0
3 years ago
Other questions:
  • What are the coordinates of the vertex of the parabola described by the equation below? y = -7(x - 4)2 - 5
    12·2 answers
  • Write 600 as the product of prime factors. give the answer in index form
    14·2 answers
  • Are you dumb or stupid, because I see both
    7·2 answers
  • What is the midpoint of a segment in the complex plane with endpoints at 6 – 2i and –4 + 6i?
    10·1 answer
  • In a survey of 347 people, the data presented in Table 3
    5·1 answer
  • At his most recent medical checkup, a boy was 40 inches tall. Currently, he is 10% taller. How tall is the boy now?
    9·2 answers
  • In the right triangle shown,
    8·1 answer
  • Consider the diagram and the paragraph proof below.
    10·2 answers
  • Last year, the average monthly revenue at the Richmond Times newspaper was $82,980. So far this year, the average has been 25% m
    7·1 answer
  • Formula for percent increase
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!