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Ksivusya [100]
3 years ago
7

Assume f(x) = ax^2+ bx + c Which one is true? f is a parabola that opens sideways to the right. f is a parabola that opens sidew

ays to the left. f is a parabola that opens downward. f is a parabola that opens upward.​
Mathematics
1 answer:
Viefleur [7K]3 years ago
5 0

Step-by-step explanation:

f is a parabola that opens upward.

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To find that one, just look at the highest exponent.  In the given equation that would be 4, so there can be at most 4 zeros in this function.
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4 years ago
Prove that: (secA-cosec A) (1+cot A +tan A) =( sec^2A/cosecA)-(Cosec^2A/secA)<br>​
Ksju [112]

Step-by-step explanation:

(\sec A - \csc A)(1 + \cot A + \tan A)

=(\sec A - \csc A)\left(1 + \dfrac{\cos A}{\sin A} + \dfrac{\sin A}{\cos A} \right)

=(\sec A - \csc A)\left(1 + \dfrac{\cos^2 A + \sin^2 A}{\sin A\cos A} \right)

=(\sec A - \csc A)\left(\dfrac{1 + \sin A \cos A}{\sin A \cos A} \right)

=\left(\dfrac{\frac{1}{\cos A} - \frac{1}{\sin A}+\sin A - \cos A}{\sin A\cos A}\right)

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5 0
3 years ago
30% of 150? I can't work it it out​
german

Answer:

30

Step-by-step explanation:

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6 0
2 years ago
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= (Y2 - y1) / (x2 - x1)

= (-1-4) / (1-0)

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and c = 4.

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2 years ago
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For this question you want to take 83 and subtract 56 which would give you 27. So 33 couldn't be the number of cows still in the barn.
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4 years ago
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