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trapecia [35]
3 years ago
10

Ms. Garcia went shopping for a class celebration. Each bag of pretzels costs $3.49. She buys 3 bags of pretzels. Each container

of hummus costs $4.19. She buys 2 containers of hummus. She has a $20 bill. Is that enough money to pay for all the snacks?
Mathematics
2 answers:
Scilla [17]3 years ago
8 0

Answer:

yes $ 18.85  Is the cost son$1.15 change

Step-by-step explanation:

3x3.49 = 10.47

2x4.19= 8.38  

Amiraneli [1.4K]3 years ago
7 0

Answer:

Yes the $20 bill will be enough to pay for all snacks.

Step-by-step explanation:

To slove this problem we have to find the cost of all snacks.

First lets find pretzels:

Each bag cost $3.49 and she bought 3 bags so

$3.49 * 3 = 10.47

Next find the hummus cost:

Each contaier is $4.19 and she bought 2 so

$4.19 * 2 = 8.38

Last add them together:

$10.47 + $8.38 = 18.85

That means we have more money left because $18.85 < $20.

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Answer: a)  79.10 %           b) 7%                c)19.85 %

Step-by-step explanation:

a) Z = ( × - μ ) ÷ σ           Where  μ mean of population σ standard               deviation Z is the abscissa to give the area or probability we are looking for associated to the value 10 ounces ( × )

So:  Z = ( 10 - 9 ) ÷ 1.2  ⇒ Z = 1/1.2 ⇒   Z = 0.83  it has to be below this value

From Z tables we get  P [ Z ≤ 0.82 ] = 0.7910  0r  79.10 %

b) Following the same procedure: We look for

P [ Z > ( x - μ ) ÷   σ ]    ⇒   Z  =  ( 12 -10 ) ÷ 1.2  = 2.5

From Z table we get the area under the curve from the left tail up to the point Z < 2.5 ( 2.5 not included) but we were asked for the area out of that previous so 1- 0.9930 = 0.007 is the area we are looking for

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Finally between the two points above mentioned ( 10 ≤  Z  ≤ 12 ) we use the previous values (taking in consideration the limits, according to the problem statement )

Z ≤ 10     Z ⇒( 10-9  ) ÷ 1.2   Z = 0.7967

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The interval is between these two points

0.9952 - 0.7967 = 0.1985   ⇒ or 19.85 %

The attached help in the understanding of the solution

                               

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Step-by-step explanation:

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Answer:

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