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timurjin [86]
3 years ago
8

Plz help I might get a F A marching band has 4 rows of trumpets with 10trumpeters in each row.how many trumpeters are in the mar

ching band use the distributive property to solve.PLZ HELP ASAP IT WILL MEAN A LOT TO ME!!!!!
Mathematics
2 answers:
solmaris [256]3 years ago
8 0
4(10) 
an unknown amount of trumpeters.
the answer is 40.
almond37 [142]3 years ago
5 0
The answer is 40

i hope this helps and have a great day !!!

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A coffee shop collected the following information regarding purchases from 110 of its customers 59 purchased coffee 39 purchased
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Answer:

Let X be the number of customer purchased coffee

Let Y be the number of customer purchased donuts

Then X\cap Y is the number of customer purchased both coffee and donuts

X\cup Y  is the number of customer purchased both coffee or donuts

<em><u>The Number of customers purchased  only Coffee:</u></em>

Number of customers purchased  only donuts =n(X -Y)

n( X -Y) = n(X) - n(X \cap Y)

n(X-Y) = 59 -16

n(Y - X) = 43

<em><u>The Number of customers purchased  only donuts:</u></em>

Number of customers purchased  only donuts =n(Y -X)

n(Y - X) = n(Y) - n(X \cap Y)

n(Y - X) = 39 -16

n(Y - X) = 23

<u>The Number of customers did not purchase either of these items:</u>

Number of customers did not purchase either of these items = n(X\cup Y)^{\prime}

First lets find   n(X\cup Y)

n(X\cup Y) = n(X) +  n(Y) - n( X \cap Y)

n(X\cup Y) = 59 + 39 - 16

n(X\cup Y)  = 82

n(X\cup Y)^{\prime}  =110 -  n(X\cup Y)  = 28

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