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Lerok [7]
4 years ago
5

What is the value of X?

Mathematics
1 answer:
balandron [24]4 years ago
3 0
The problem can be solved using the Power of a Point, which states that:

EC \cdot ED=EB \cdot EA.

Substituting

EC=x+4; ED=x+5; EB=x+1; EA=x+12, 

we have the equation

(x+4) \cdot (x+5)=(x+1) \cdot (x+12).

Expanding both sides we get, 

x^2+9x+20=x^2+13x+12.

Subtracting x^2 from both sides, we have
                           
9x+20=13x+12. 
 
Collecting x's and the numbers on two different sides, we have:

4x=8, which finally yields x=2.



Answer: x=2
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Answer:

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Step-by-step explanation:

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= \frac{8}{15}  --------------(1)

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If "t" is the time taken to finish the  job together, then one hour work

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Now we have to find the value of "t" by setting the expression (1) and (2) equal.

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It can solve by flipping the equation;

\frac{t}{1} = \frac{18}{5}

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4 0
3 years ago
Read 2 more answers
Use a product of two binomials to find a polynomial that represents the area of Roberto's plot.
Helga [31]

Answer:

First, we know that the area of a rectangle of width W and length L is:

A = W*L

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Then the area of the whole thing is:

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This is what we wanted, a product of two polynomials that represents the area of Roberto's plot.

Now if we subtract the white square (is a square of sidelength x, then its area is A = x*x) we will get the area of the border;

The total area of Roberto's borders is:

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Answer:

41% is equivalent to 41/100.

5 0
3 years ago
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makkiz [27]

Answer:

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Answer
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Explanation
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