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2 years ago

A shopper pays $87.15 for an $83 ceramic vase after sales tax is added. What is the sales tax percentage?

Mathematics

2 answers:

nexus9112 [7]2 years ago

8 0

Answer:

5% or $4.15

Step-by-step explanation:

Irina-Kira [14]2 years ago

5 0

Answer:

Step-by-step explanation:

sales tax: 87.15-83 = 4.15

4.15/83 = 0.05

to convert decimal to percentage multiply by 100

0.05*100 = 5%

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An experiment consists of choosing objects without regards to order. Determine the size of the sample space when you choose the

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Answer:

$n= 75, 582$

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Step-by-step explanation:

Generally the size of the sample sample space is mathematically represented as

$n = \left N } \atop {}} \right. C_r$

Where N is the total number of objects available and r is the number of objects to be selected

So for a, where N = 19 and r = 8

$n = \left 19 } \atop {}} \right. C_8 = \frac{19 !}{(19 - 8 )! 8!}$

$= \frac{19 *18 *17 *16 *15 *14 *13 *12 *11! }{11 ! \ 8!}$

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For b Where N = 25 and r = 3

$n = \left 25 } \atop {}} \right. C_3 = \frac{25 !}{(19 - 3 )! 3!}$

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For c Where N = 23 and r = 2

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4 0

3 years ago

At every company meeting, the president speaks for 20 minutes and then takes questions from her employees. Let q represent the n

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Answer:

t = 20 + q (minutes)

Step-by-step explanation:

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Speaking session = 20 minutes

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But total number of minutes meeting lasted = t minutes.

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3 years ago

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2 years ago

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Vlad1618 [11]

See the picture attached to better understand the problem

we know that
in the right triangle ABC
cos A=AC/AB
cos A=1/3
so
1/3=AC/AB----->AB=3*AC-----> square----> AB²=9*AC²----> equation 1

applying the Pythagoras Theorem
BC²+AC²=AB²-----> 2²+AC²=AB²---> 4+AC²=AB²----> equation 2

substitute equation 1 in equation 2
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