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
guajiro [1.7K]
3 years ago
6

A store charges ​$13.75 for 5 boxes of cookies. A second store charges ​$9.00 for 4 boxes of​ cookies, but you have to buy a gal

lon of milk for ​$1.50 to get that deal.
**Write the cost model equations for both​ stores, and find the number of boxes of cookies that makes the costs equal.**
Mathematics
1 answer:
belka [17]3 years ago
5 0

Answer: The number of boxes of cookies that makes the costs equal is 3

Step-by-step explanation:

A store charges ​$13.75 for 5 boxes of cookies. This means the charge per cookie is 13.75/5 = $2.75

Therefore, for x cookies, the store charges 2.75 × x = $2.75x

A second store charges ​$9.00 for 4 boxes of​ cookies. This means the charge per cookie is 9/4 = $2.25

Therefore, for x cookies, the store charges 2.25 × x = $2.25x but you have to buy a gallon of milk for ​$1.50 to get that deal.

This means that at the second store, the charge for x cookies will be

2.25x + 1.50. Therefore, the cost model equations for both boxes are

Cost of x boxes cookies at first store, C(x)= $2.75x

Cost of x boxes of cookies at second store, C(x) = 2.25x + 1.50

To find number of boxes of cookies that make both costs equal,

2.75x = 2.25x + 1.50

2.75x - 2.25x = 1.50

0.5x = 1.5

x = 1.5/0.5 = 3

You might be interested in
These spam comments are seriously getting out of hand and are really annoying. And the worst part is that you can’t really do an
RideAnS [48]

Answer: Yea at least brainly deleting them when they catch them

Step-by-step explanation:

7 0
3 years ago
3. Assume that the likelihood of a child under the age of ten watching PBS is 0.76. Three children are
natta225 [31]

Using the binomial distribution, the probabilities are given as follows:

a) 0.4159 = 41.59%.

b) 0.5610 = 56.10%.

c) 0.8549 = 85.49%.

<h3>What is the binomial distribution formula?</h3>

The formula is:

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

C_{n,x} = \frac{n!}{x!(n-x)!}

The parameters are:

  • x is the number of successes.
  • n is the number of trials.
  • p is the probability of a success on a single trial.

For this problem, the values of the parameters are:

n = 3, p = 0.76.

Item a:

The probability is P(X = 2), hence:

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

P(X = 2) = C_{3,2}.(0.76)^{2}.(0.24)^{1} = 0.4159

Item b:

The probability is P(X < 3), hence:

P(X < 3) = 1 - P(X = 3)

In which:

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

P(X = 3) = C_{3,3}.(0.76)^{3}.(0.24)^{0} = 0.4390

Then:

P(X < 3) = 1 - P(X = 3) = 1 - 0.4390 = 0.5610 = 56.10%.

Item c:

The probability is:

P(X \geq 2) = P(X = 2) + P(X = 3) = 0.4159 + 0.4390 = 0.8549

More can be learned about the binomial distribution at brainly.com/question/24863377

#SPJ1

4 0
2 years ago
Wrote the equation an the answer for brainliest!
Snowcat [4.5K]

Answer: 66.50+5g= 83.50

g=3.4

Step-by-step explanation:

3 0
3 years ago
Find the value of X, please!
worty [1.4K]

Answer:

x=42°

Step-by-step explanation:

We know that 2 of the legs are congruent, so the angles opposite them will be congruent.

The angles of a triangle add up to 180°

This can be represented by 96+2x=180

2x=84

x=42

<u>Hope this helps :-)</u>

7 0
3 years ago
Read 2 more answers
If an employee notices that a bucket with sanitizing water is becoming dirt, he/she should ___.
ehidna [41]
This is pretty much a "common sense" question.  It'd be best to get rid of the dirty sanitizing water and start fresh; in other words, he should change (throw out) the dirty water and make a fresh sanitizer.

By the way, this is the Math section; next time, please choose a different section more suited to your questions.
7 0
3 years ago
Other questions:
  • A researcher reports a 98% confidence interval for the proportion of Drosophila in a population with mutation Adh-F to be [0.34,
    11·1 answer
  • Jermaine has just painted a large mural. It's 8 1/2 feet wide the wall he wants to place it on is 11 3/4 feet wide.Ahout how far
    5·1 answer
  • Which of the following linear expressions CANNOT be factored?
    15·2 answers
  • Calculate the length of the circumference of a circle with diameter of 7cm (1dp)
    9·1 answer
  • a segment with endpoints A (4,2) and C (1,5) is partitioned by a point B such that AB and BC from a 1:3 ratio. find B.
    8·1 answer
  • The area of a rectangular garden is 54 square feet. If the width of the garden is 1.2 feet, what is its length in feet?​
    14·2 answers
  • In your own words, explain what a rational expression is and give and example of one.
    8·1 answer
  • 13. You are going camping. The cost for renting a cabin at
    8·1 answer
  • What is this answer? A B C OR D?
    7·2 answers
  • Help meeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!