This is the work and the answer is 4/23 or (in decimal form) 0.17391304
A student got an 80% on a test that had 40 questions on it. How many questions did the student get correct?
1 answer:
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Answer:
B
Step-by-step explanation:
The closed circle at - indicates that x can equal this value
The open circle at indicates that x cannot equal this value.
All values of x between - and
are valid, thus
- ≤ x <
→ B
Answer:
Step-by-step explanation:
Given
Vertex of the parabola
Focus of the parabola
As the x coordinate of vertex and focus is same and focus lie below the vertex, therefore the parabola is the type of
distance between Vertex and focus is 1 unit
Parabola becomes
Answer:
Option 3 - f(x)= 4x,
Step-by-step explanation:
To find : Which two functions are inverses of each other?
Solution :
Two functions are inverse if
Now, we find one by one
1) f(x)= x, g(x) = -x
Not true.
2) f(x)= 2x,
Not true.
3) f(x)= 4x,
i.e. is true.
So, These two functions are inverse of each other.
4) f(x)= -8x,
Not true.
Therefore, Option 3 is correct.