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EastWind [94]
3 years ago
6

Evaluate the following expression. (-3)-2 | ao

Mathematics
1 answer:
dmitriy555 [2]3 years ago
7 0

Answer:

6

Step-by-step explanation:

The parentheses mean to multiply, in this case, so -3 times -2 would equal 6.

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Well, since there is a 0 in the hundredths place, the 4 in the tenths place would stay the same! Ignore the 3.
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Find the x-intercepts of the parabola with vertex (-5,80) and y-intercept (0,-45). Write your answer in this form (x of 1 , y of
Ivan
A parabola is a quadratic function, and a quadratic can be expressed in vertex form, which is:

y=a(x-h)^2+k, where (h,k) is the vertex (absolute maximum or minimum point of the quadratic)

In this case we are given that (h,k) is (-5,80) so we have so far:

y=a(x--5)^2+80

y=a(x+5)^2+80, we are also told that it passes through the point (0,-45) so:

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y=-5(x+5)^2+80

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5(x+5)^2=80  divide both sides by 5

(x+5)^2=16  take the square root of both sides

x+5=±√16  which is

x+5=±4  subtract 5 from both sides

x=-5±4 so the x-intercepts are:

x=-1 and -9


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