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3 years ago

An mp 3 player costs $60. If a 6.75% sales tax is add, what is the total cost?

Mathematics

1 answer:

photoshop1234 [79]3 years ago

3 0

To find the total cost, multiply the price of the player by 1 + sales tax.

60 x 1.0675 = 64.05

The total cost would be $64.05

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For each statement determine if it is True or False for the graph of 6x – 3y = 21.

Viktor [21]

<h3>Answer:</h3>

1. Yes, the x-intercept is 3 1/2

2. Yes, the y-intercept is -7

3. No, the slope is 2

<h3>Explanation:</h3>

6x -3y = 21

-3y = -6x + 21

y = 2x - 7

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3 years ago

What is the sum of the angle measures of a 37 gon?

Airida [17]

Answer:

The sum of the interior angles with n number of sides is solved through the equation,

S = 180 x (n - 2)

For 37 - gon,

S = 180 x (37 - 2) = 6300

Thus, the sum of the interior angles of a 37-gon is 6300°

Step-by-step explanation:

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3 years ago

Solve the following system of linear equations. 3x + 2y = 10 2x + 3y = 15/2 No solution y = (-3/2)x + 5 x = 3, y = -1/2 x = 3, y

frutty [35]

3x + 2y = 10 .....multiply by -2
2x + 3y = 15/2...multiply by 3
------------------
-6x - 4y = -20 (result of multiplying by -2)
6x + 9y = 22.5 (result of multiplying by 3)
-----------------add
5y = 2.5
y = 2.5/5
y = 1/2

3x + 2y = 10
3x + 2(1/2) = 10
3x + 1 = 10
3x = 10 - 1
3x = 9
x = 9/3
x = 3

solution is (3,-1/2)

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3 years ago

If 1 cm represents 30 km on a map and colorado is shown by a 20cm by 15 cm rectangle on the map, what is the approximate actual

zubka84 [21]

Answer:

20*30km = 600km

15*30km = 450km

600km * 450km = 270000 km^2

Step-by-step explanation:

assuming 1cm --- 30km causes that 2cm --- 60km, 3cm --- 90km, 4cm --- 120km etc. Notice that number of km's is 30 times greater than the number of cm's on a map

using this logic, you calculate both real dimensions of Colorado by multiplying 20*30 = 600 km and 15*30 = 450km

Then we use a formula of an area of a rectangle $A=a\cdot b$ assuming $a=600km, \ b=450km$ and get $A=600\cdot 450=270000km^2$ which is an actual area of Colorado

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