Which of the following equations shows the correct form of the equation x 2 + 10x + 25 = 16 if the zero product property is to b e used? (x + 5)(x + 5) = 16 (x + 1)(x + 9) = 0 (x - 1)(x - 9) = 0
1 answer:
Answer:
(x + 1)(x + 9) = 0
Step-by-step explanation:
After you subtract 16 from both sides, you get ...
x² +10x +9 = 0
When you factor this equation, it becomes ...
(x +1)(x +9) = 0
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For the zero product property to be of any use, the form of the equation must be a product that equals zero.
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<em>Comment on the other answer choice</em>
(x -1)(x -9) = 0 = x² -10x +9 . . . . . the x term is different from that in the given equation. It has the wrong sign.
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Answer:
f^-1(x) = 4(x+5)/3
Step-by-step explanation:
Let f(x) = y
So, y = (3/4)x - 5
y + 5 = (3/4)x
4(y+5)/3 = x
The steps are first to make a variable that holds the same value as the function, then from there you simplify and eventually make x the subject of the equation.
Answer:
1,3,21,23,35 odd
Step-by-step explanation:
those aren't prime
3 -(2x-5) < -4(x+2)
3 - 2x + 5 < -4x - 8
-2x + 8 < -4x - 8
2x + 8 < -8
2x < -16
x < -8
Hope this helps! ;)
z° = 25°+90°
=115°.............