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Nezavi [6.7K]
3 years ago
7

Robert buys a new pair of boots for 120 dollars. Sales tax is

Mathematics
1 answer:
Margarita [4]3 years ago
7 0

Answer: $133.20

Step-by-step explanation: To simply find the sales tax all you have to do is:

Step 1 Multiply: 120 x .11 = 13.2

Step 2 Add: 120 + 13.2 = 132.2

So Robert actually has to pay $133.20

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A square has a perimeter of 36 cm.<br> What is the length of each side?
larisa [96]
9 cm i hope this helps
5 0
2 years ago
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Suppose y varies inversely with x, and y=39 when x=1/3.what is the value of y when x=26
vagabundo [1.1K]

Answer:

y = 1/2

Step-by-step explanation:

Varies inversely

xy = k

------------------------

Find the constant of variation

y = 39 when x = 1/3

k = 1/3 * 39

k = 13

-----------------------

what is the value of y when x=26

26y = 13

y = 13/26

y = 1/2

6 0
3 years ago
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Marcos had 15 coins in nickels and quarters. He had 3 more quarters than nickels. He wrote a system of equations to represent th
hodyreva [135]

Answer:

There are 6 coins in nickels and 9 coins in quarters.

Step-by-step explanation:

Now, to find the solution.

According to question:

The number of nickels = x.

The number of quarters = y.

So, the total number of coins:

x+y=15.

He had 3 more quarters than nickels.

Thus,

y=x+3 .....(1)

Now, to get the solution:

x+y=15

Substituting the equation (1):

x+(x+3)=15

x+x+3=15

2x+3=15

<em>Subtracting both sides by 3 we get:</em>

<em />2x=12<em />

<em>Dividing both sides by 2 we get:</em>

x=6.

<em>The number of nickels = 6.</em>

Now, substituting the value of x in equation (1):

y=x+3\\\\y=6+3\\\\y=9.

<em>The number of quarters = 9.</em>

Thus, there are 6 coins in nickels and 9 coins in quarters.

6 0
3 years ago
Is the square root of 20 a rational number or irrational number
KIM [24]
A number is rational if it can be written in form a/b where a and b are integers and b is not equal to 0
integers are like -4,-3,-2,-1,0,1,2,3,4, etc


so
√20=2√5 which is irrational because we can't write it as a fraciton with only integers

also a rational number multilied by an irratinonal number=irrtaional
we know that the square root of any prime number will be irrational and 5 is prime so 2 times √5=rational times irrational=irrational

√20 is irrational
7 0
3 years ago
Read 2 more answers
They are going to build wind turbines off the coast of Staten Island. It requires ⅙ square miles of land. How many turbines can
Mila [183]

Answer:

48

Step-by-step explanation:

Here we will show you how to calculate 8 divided by 1/6. We will give you the answer in fraction form and in decimal form.

Here is 8 divided by 1/6 displayed mathematically in colors:

8

 ÷    

1

6

The numbers in 8 divided by 1/6 are labeled below:

8 = whole number

1 = numerator

6 = denominator

To make it a fraction form answer, you multiply the whole number by the denominator and make the result the new numerator. The old numerator becomes the new denominator:

8 x 6

1

 =  

48

1

Thus, the answer to 8 divided by 1/6 in fraction form is:

48

1

To make the answer to 8 divided by 1/6 in decimal form, you simply divide the numerator by the denominator from the fraction answer above:

48 / 1 = 48

The answer is rounded to the nearest two decimal points if necessary.

48/1 is an improper fraction and should be written as 48.

3 0
2 years ago
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