john is n years old. kim is three years younger than john. vanessa is half kim's age. write an expression for each persons age.
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Answer:
Step-by-step explanation:
The perimeter is obtained by taking the sun of the fence :
Outer fencing :
Let's obtain b :
From Pythagoras :
b² = 15² - 12²
b = sqrt(225 - 144)
b = 9
Outer fencing = 2(12+6) + 2(8+9)
= 2(18) + 2(17)
= 36 + 34
= 70
Inner fencing :
(8 + 9 + 12 + 6 + 15 + 10) = 60
(70 + 60) = 130 yards
<h3>I'll teach you how to solve 11X - X2 +4y2 = 52</h3>
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11X - X2 +4y2 = 52
Add similar elements:
9x+4*2y= 52
Multiply the numbers 4*2:
4*2= 8
9x+8y= 52
Subtract 8y from both sides:
9x+8y-8y= 52- 8y
Simplify:
9x= 52- 8y
Divide both sides by 9:
9x/9= 52/9 - 8y/9
Simplify:
x=
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