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MatroZZZ [7]
3 years ago
13

A dance studio charges $12 per

Mathematics
1 answer:
klemol [59]3 years ago
5 0

Answer:

you will need to subtract 15% from $12 and get 10.20 now times that by 5 and you will get $51.

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Question 13
Mrac [35]

Answer:

71.6 degrees

Step-by-step explanation:

Given the vectors

u= <8,4> v = <9.-9> (5 points)

u*v = (8, 4)*(9, -9)

u*v = 8(9)+(4)(-9)

u*v = 72 - 36

u*v = 36

|u| = √8²+4²

|u| = √64+16

|u| = √80

|v| = √9²+9²

|v|  = √81+81

|v|  = √162

Using the formula

u*v = ||u||v| cos theta

36 = √80(√162)cos theta

36 = √12960 cos theta

cos theta = 36/√12960

cos theta = 36/113.8

cos theta = 0.3162

theta = arccos(0.3162)

theta = 71.56 degrees

Hence the angle between the given vectors to the nearest tenth of a

degree is 71.6 degrees

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2 years ago
Kiara is stacking wood. Kiara stacks sixty-five pieces of wood. There are only seven more pieces of wood for kiara to put on the
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The answer is 72

You would have to add sixty-five plus seven
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Answer:

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Answer:

36 people picked a vanilla cupcake

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