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Annette [7]
3 years ago
5

Which property justifies the procedure used to eliminate fractions and decimals from equations?

Mathematics
1 answer:
igor_vitrenko [27]3 years ago
4 0
By multiplying both sides of an equation by a number, you can eliminate all decimals and fractions, so the answer is C.
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Answer: 26.8 feet

Step-by-step explanation:

In the figure attached you can see two right triangles  triangle ABD and a triangle ACD.

You are located at point B and the other person at point C.

The approximate height of the lifeguard station is <em>x</em>.

Keep on mind that:

tan\alpha=\frac{opposite}{adjacent}

Therefore:

<em>For the triangle ABD</em>:

tan(36\°)=\frac{x}{DC+11}    [EQUATION 1]

<em>For the triangle ACD:</em>

tan(46\°)=\frac{x}{DC}    [EQUATION 2]

Solve from DC from [EQUATION 2]:

DC=\frac{x}{tan(46\°)}

Substitute into [EQUATION 1] and solve for x:

tan(36\°)=\frac{x}{(\frac{x}{tan(46\°)}+11)}\\tan(36\°)(\frac{x}{tan(46\°)}+11)=x\\11*tan(36\°)=x-\frac{xtan(36\°)}{tan(46\°)}\\7.991=0.298x

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7 0
3 years ago
The two-way table shows information about the subjects studied
son4ous [18]

Answer:

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Step-by-step explanation:

a) The table tells you there are 42 males, and 20 more females that study biology.

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Answer:

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Answer:

because of them is bigger than the other one so that means its differ but it has the same length

Step-by-step explanation:

7 0
3 years ago
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Number 8 please thanks!
WINSTONCH [101]

4b(b+2)=16+4b^2\\4b^2+8b=16+4b^2\\8b = 16 + 4b^2-4b^2\\8b = 16\\b = 2

Hope that helps!

4 0
3 years ago
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