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Vladimir [108]
2 years ago
6

Given the following prices, explain why Brand B is the better buy. (Hint: 16 ounces = 1 pound and 1 pound = 453.59 grams)

Mathematics
2 answers:
Mashcka [7]2 years ago
6 0

Answer:

Step-by-step explanation:

Calculate the unit price of Brand A: 54 ounces = 3.375 pounds; 4.89/3.375 is approximately $1.45 per pound. Calculate the unit price of Brand B: 2 3/4 = 2.75; 3.91/2.75 is approximately $1.42 per pound. Calculate the unit price of Brand C: 910 grams is approximately 2 pounds; 3.10/2 is approximately $1.50 per pound. Comparing the unit prices, Brand B has the cheaper unit price.

almond37 [142]2 years ago
4 0
Convert all to lb and find cost per 1lb

A.
54oz, convert to lb
54/16=3.375lb
find per lb
4.89/3.375=$1.4488888 per lb

B.
2 and 3/4=2.75, 3.91/2.75=$1.42181 per lb

C. 910/453.59=2.00621lb
3.10/2.00621=$1.545 per lb



compare
A: $1.4488888 per lb

B: $1.42181 per lb

C: $1.545 per lb


B is cheapest, followed by A then C


B is best buy
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Alright, lets get started.

At the beginning of her training, she is able to run 2 miles without stopping means 2 will be in the addition when we will write the equation for her running miles.

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Suppose she runs x weeks, so shee will add distance = \frac{3}{4}x

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Where d is total numer of miles she runs

x is number of weeks    :   Answer

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2 years ago
1) Jodi liked to collect stamps. On 3 different days she bought 6 stomps. Then she
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Answer:

4

Step-by-step explanation:

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Ming needs 1/2 pint of red paint for an art project. He has 6 jars that have the following amounts of red paint in them. He want
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The hypotenuse of a 45°-45°-90° triangle measures 10 StartRoot 5 EndRoot in. A right triangle is shown. The hypotenuse has a len
suter [353]

Answer:

5\sqrt{10}\ units

5 StartRoot 10 EndRoot

Step-by-step explanation:

we know that

The legs of a 45°-45°-90° triangle are congruent

Let

x ---->  the length of one leg of the triangle

Applying the Pythagorean Theorem

c^2=a^2+b^2

where

c is the hypotenuse

a and b are the legs

we have

c=10\sqrt{5}\ units

a=b=x\ units

substitute

(10\sqrt{5})^2=x^2+x^2

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Simplify

x=5\sqrt{10}\ units

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4 0
2 years ago
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3.30 Survey response rate. Pew Research reported in 2012 that the typical response rate to their surveys is only 9%. If for a pa
Artist 52 [7]

Answer:

0% probability that at least 1,500 will agree to respond

Step-by-step explanation:

I am going to use the binomial approximation to the normal to solve this question.

Binomial probability distribution

Probability of exactly x sucesses on n repeated trials, with p probability.

Can be approximated to a normal distribution, using the expected value and the standard deviation.

The expected value of the binomial distribution is:

E(X) = np

The standard deviation of the binomial distribution is:

\sqrt{V(X)} = \sqrt{np(1-p)}

Normal probability distribution

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:

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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.

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In this problem, we have that:

n = 15000, p = 0.09

So

\mu = E(X) = np = 15000*0.09 = 1350

\sigma = \sqrt{V(X)} = \sqrt{np(1-p)} = \sqrt{15000*0.09*0.91} = 35.05

What is the probability that at least 1,500 will agree to respond

This is 1 subtracted by the pvalue of Z when X = 1500-1 = 1499. So

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

Z = \frac{1499 - 1350}{35.05}

Z = 4.25

Z = 4.25 has a pvalue of 1.

1 - 1 = 0

0% probability that at least 1,500 will agree to respond

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2 years ago
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