The image of a parabolic lens is traced onto a graph. The function f(x) = (x + 8)(x – 4) represents the image. At which points d
2 answers:
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Answer:
(4, -1) is not a solution to the system
Step-by-step explanation:
The first point: (4,-1) doesn't satisfy the first inequality:
since we get to an absurd, because -1 cannot be strictly smaller than -1!
Answer:
C
Step-by-step explanation:
If we were to draw a horizontal line from the bottom of the ladder to the bottom of the tree and then draw a vertical line from the bottom of the tree to the top of the ladder, we'd get a right triangle with legs as the distance between the bottom of the tree and the bottom of the ladder and the height of the ladder, and the hypotenuse is the length.
Here, we know the hypotenuse is 10 feet and that the bottom of the ladder is 4 feet away from the bottom of the tree, so use the Pythagorean Theorem to find the height:
h = ≈ 9.2 feet
The answer is C.
Answer:
260 nesting turtles were at this sanctuary last year
Step-by-step explanation:
Given:
The number of nesting turtles decreased = 10%
Number of turtles present in sanctuary this year = 234
To Find:
Number of nesting turtles present at this sanctuary last year= ?
Solution:
Let the number of nesting turtles present at this sanctuary last year be x
Then,
x- 10% of x = Number of turtles present in sanctuary this year
x- 10% of x = 234
x= 260