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8090 [49]
3 years ago
8

The sales tax in one town is 8%. So, the total cost of an item can be written as c +0.08c. What is the total cost of an item tha

t sells for $12?
Mathematics
2 answers:
allsm [11]3 years ago
8 0
$12.96 is your answer
aleksley [76]3 years ago
3 0
Use the equation and plug in 12 for the value of c.

c+.08c
12+.08(12)

Now Simplify the equation;

12+.96
= 12.96

Answer: $12.96

Hope this helps :)
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27.96 round to the nearest tenth
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3 years ago
The angle θ lies in Quadrant II. sinθ=3/4 What is cosθ ?
Elden [556K]

Hello from MrBillDoesMath

Answer:

[email protected] = - sqrt(7)/ 4    

which is choice B

Discussion:

This problem can be solved by drawing triangles and looking at ratios of sides or by using the trig identity:

([email protected])^2 + (sin2)^2 = 1

If [email protected] = 3/4 , the

([email protected])^2 + (3/4)^2 = 1 =>              (subtract (3/4)^2 from both sides)

([email protected])^2 = 1 - (3/4)^2  = 1 - 9/16   = 7/16

So...... taking the square root of both sides gives

[email protected] =  +\- sqrt(7)/ sqrt(16) = +\- sqrt(7)/4

But is [email protected] positive or negative?  We are told that @ is in the second quadrant and cos(@) is negative in this quadrant, so our answer must be negative

[email protected] = - sqrt(7)/ 4    

which is choice B


Thank you,

Mr. B


4 0
3 years ago
Use the Distributive Property to multiply. 2(b – 7)
mr Goodwill [35]

Answer:

2b - 14

Step-by-step explanation:

2(b – 7)

2b - 14

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Answer:

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Step-by-step explanation

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ruslelena [56]

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