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
Mnenie [13.5K]
3 years ago
13

value mart is advertising a back to school sale on notebook a pack of 8 notebooks sells for 7.15 where as a 6 pack of the same b

rand of note books cost 5.25 wich is the better buy
Mathematics
1 answer:
Morgarella [4.7K]3 years ago
4 0

Answer:

6 notebooks  for  5.25 is a BETTER BUY.

Step-by-step explanation:

Here, according to the question:

A)  8 notebooks sells for 7.15

\textrm{Cost of 1 notebook} = \frac{\textrm{Cost of n notebooks}}{\textrm{n}}

So, here cost of 1 notebook = (\frac{7.15}{8} ) = 0.893

⇒Here the cost of 1 notebook = $0.893

B)  6 notebooks sells for  5.25

\textrm{Cost of 1 notebook} = \frac{\textrm{Cost of n notebooks}}{\textrm{n}}

So, here cost of 1 notebook = (\frac{5.25}{6} ) = 0.875

⇒Here the cost of 1 notebook = $0.875

Now, as we can see   $0.893 >  $0.875

⇒ the cost of 1 notebook is MORE if we buy 8 notebooks sells for 7.15.

Hence, 6 notebooks  for  5.25 is a BETTER BUY.

You might be interested in
the function y=-2(x-3)^2+4 shows the daily profit (in hundreds of dollars) of a hot dog stand, where x is the price of a hot dog
Roman55 [17]
X intercept would mean plug in 0 for Y.
Then finding the y intercept would mean X is 0. Your answer will be 69420
8 0
3 years ago
Plz some one look at this
aleksklad [387]
5 : - 1/6 = 0.167     out of 10 = 1.67  out of 100 = 16.7

even number  0.33 out of 10:-  3.3 out of 100:-  33

a prime number  0.5 out of 10: 5 and out of 100:- 50

multipl of 3:- 0/33  out of 10:- 3.3 and out of 100: 33
4 0
3 years ago
Which is the best approximation for <img src="https://tex.z-dn.net/?f=%5Csqrt%7B90%7D" id="TexFormula1" title="\sqrt{90}" alt="\
Aleonysh [2.5K]

Answer:

A9.5

Step-by-step explanation:

I used a calculator......hope it helped:)))))))))))

4 0
3 years ago
The number of major earthquakes in a year is approximately normally distributed with a mean of 20.8 and a standard deviation of
SCORPION-xisa [38]

Answer:

a) 51.60% probability that in a given year there will be less than 21 earthquakes.

b) 49.35% probability that in a given year there will be between 18 and 23 earthquakes.

Step-by-step explanation:

Problems of normally distributed samples can be solved using the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem, we have that:

\mu = 20.8, \sigma = 4.5

a) Find the probability that in a given year there will be less than 21 earthquakes.

This is the pvalue of Z when X = 21. So

Z = \frac{X - \mu}{\sigma}

Z = \frac{21 - 20.8}{4.5}

Z = 0.04

Z = 0.04 has a pvalue of 0.5160.

So there is a 51.60% probability that in a given year there will be less than 21 earthquakes.

b) Find the probability that in a given year there will be between 18 and 23 earthquakes.

This is the pvalue of Z when X = 23 subtracted by the pvalue of Z when X = 18. So:

X = 23

Z = \frac{X - \mu}{\sigma}

Z = \frac{23 - 20.8}{4.5}

Z = 0.71

Z = 0.71 has a pvalue of 0.7611

X = 18

Z = \frac{X - \mu}{\sigma}

Z = \frac{18 - 20.8}{4.5}

Z = -0.62

Z = -0.62 has a pvalue of 0.2676

So there is a 0.7611 - 0.2676 = 0.4935 = 49.35% probability that in a given year there will be between 18 and 23 earthquakes.

5 0
3 years ago
The table shows four transactions and the resulting account balance in a bank account, except some numbers are missing. Fill in
rusak2 [61]
For transaction 3 it should be -155.15 and for transaction 4 it would be -223.75
6 0
2 years ago
Other questions:
  • Why does a triangular prism and an oblique triangular prism, each made up of 15 equal cross sections, have the same volume? Sele
    8·1 answer
  • Andy sold 312 inGirl Scout cookies. If each box is 4 how many boxes did Andy sail
    15·1 answer
  • Rename the number. Use the place value chart to help. 24 ten thousands =
    10·2 answers
  • Find the area of the shape
    14·1 answer
  • 1/3 plus 4/7 divided by 3/10
    12·2 answers
  • Can someone help me? Thanks! :D
    9·1 answer
  • I believe the answer is d is this correct?
    12·1 answer
  • Can someone help me with these questions please ?!!!
    12·1 answer
  • The diagram shows a triangle.<br><br> What is the value of b?
    10·1 answer
  • PLSSSSSS HELPPPPPPP FAST WILL GIVE BRAINLIEST IF CORRECT!!<br><br> ITS IREADY PLLSSSS HELPP!!
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!