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leonid [27]
3 years ago
7

The equation below describes a parabola. If a is negative, which way does the parabola open?

Mathematics
2 answers:
const2013 [10]3 years ago
6 0
Given equation : y=ax^2 
Taking a to the other side we have, x^2=(1/a)*y
 This equation describes a parabola that opens up.
 When a is negative, the focus is on the negative y-axis, therefore, the parabola opens down.
 The answer is a. down.
sladkih [1.3K]3 years ago
4 0

Answer:down

Step-by-step explanation:

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B a perfect cube because 5 cubed is 125
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3 years ago
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kolezko [41]

Answer:

98

Step-by-step explanation:

So we have the two functions:

g(x)=-2x-2\text{ and } r(x)=x^2-2

And we want to find the value of r(g(4)).

To do so, first find the value of g(4):

g(x)=-2x-2\\g(4)=-2(4)-2\\

Multiply:

g(4)=(-8)-2

Subtract:

g(4)=-10

Now, substitute this into r(g(4)):

r(g(4))\\=r(-10)

And substitute this value into r(x):

r(-10)=(-10)^2-2

Square:

r(-10)=100-2

Subtract:

r(-10)=98

Therefore:

r(-10)=r(g(4))=98

3 0
3 years ago
Recursive definitions for subsets of binary strings.Give a recursive definition for the specified subset of the binary strings.
dmitriy555 [2]

Answer:

Step-by-step explanation:

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your second case is basically the fact that if you have string of length n ending with zero than you can the string of length n+1 ending with zero by:

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2. or by placing a zero in available n+1 places.

0 ϵ P

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3 0
3 years ago
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qaws [65]

Answer:

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Step-by-step explanation:

4 0
3 years ago
Can somebody please give me a step by step explanation. I have the answer I just don’t know how to show work!!!!!!! Please!!!
krek1111 [17]

Answer:

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Step-by-step explanation:

We have a rectangle and 2 semicircles

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Then we know that 2 semicircles = 1 circle

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Add the areas together

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7 0
3 years ago
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