A farmhouse shelters Penn animal summer pigs in the summer ducks altogether there at 36 legs how many of each animal are there?
1 answer:
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Hello :
<span>(x 4 +5x² - 36)(2x ²+ 9x - 5) = 0</span>
<span>(x 4 +5x² - 36)(2x ²+ 9x - 5) = 0</span>
Answer:
x = 4
Step-by-step explanation:
Using Pythagoras' identity in the right triangle.
The square on the hypotenuse is equal to the sum of the squares on the other 2 sides, that is
x² + 1² = 9²
x² + 1 = 81 ( subtract 1 from both sides )
x² = 80 ( take square root of both sides )
x = =
=
×
= 4