Answer:
x=2.600
Step-by-step explanation:
2x(x+4)+7+=(x+8)+ 2x(x+1)+12
Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :
-> 2*x*(x+4)+7+-((x+8)+2*x*(x+1)+12)=0
-> ((2x•(x+4))+7)-(((x+8)+2x•(x+1))+12) = 0
-> (2x • (x + 4) + 7) - (2x2 + 3x + 20) = 0
-> 5x - 13 = 0
-> Add 13 to both sides of the equation :
5x = 13
Divide both sides of the equation by 5:
x = 13/5 = 2.600
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Answer:
<h2>
<em><u>THE CORRECT ANSWER IS B- 73 FEET</u></em></h2>
<em>The given condition in question will form a right angle triangle </em>
<em>and the length of sides of triangle are given 55ft, 48ft and missing one.</em>
<em>Now using pythagoras theorem</em><em>,55²+48²= x²</em>
<em>x² = 3025 + 2304</em>
<em>x² = 5329</em>
<em>Taking square root of 5329 will give 73 ft!</em>
20 because you multiply 4 and 5 and get 20
