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maxonik [38]
3 years ago
11

This is urgent, please answer!!

Mathematics
1 answer:
Serhud [2]3 years ago
3 0
Answer: 23.4

Explanation: make the volumes equal each other with the ? as x. Then solve.
(12)(18)(32.5)=(25)(12)x
Divide both sides by 12
(18)(32.5)=25x
Solve left side
585=25x
Divide by 25
x=23.4
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A pair of boats costs $64.99. If the sales tax is 7%, what is the sales tax<br>on the boots?<br>​
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Answer:

First, you would need to find 7% of $64.99 which can be calculated like this:

64.99 x 0.07 = 4.55, this means that the sales tax on the boots is $4.55.

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3 years ago
Find the product of the 3+ V11 and its conjugate.
erik [133]

Answer:

It would be -2.

Step-by-step explanation:

<u>Key skills: Conjugate, Distribution Property, and Addition/Subtraction </u>

3 + \sqrt{11\\} is your expression. The conjugate is an important concept you need to know to solve this.

Given the expression: a + \sqrt{b\\}

It's conjugate would be: a - \sqrt{b}

(Basically if there is an addition sign between the 2 terms, it would become a subtractions symbol and if there is a subtraction symbol it would become an addition symbol)

1) So the conjugate of  3+ \sqrt{11} would be 3 - \sqrt{11}

2) Now we would have to multiply them

  • (3 + \sqrt{11})(3- \sqrt{11}) is your expression.
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  • The two middle terms would cancel out (they both add up to 0), so then we have 3^{2} - \sqrt{11}^2
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Hope you understood, and have a nice day!! :)

6 0
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Maria ate 1/3 of a pie . Her sister ate 1/5 of that . What fraction of the whole pie did her sister eat
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Step-by-step explanation:

1/5 of 1/3 is 1/5 x 1/3 which is 1/15

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Answer:

The maximum possible area is 1,600 m.

Step-by-step explanation:

You already have the two sides so you just multiply 40×40 and that gives you the area.

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2 years ago
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