Anyone know how to do this kind of algebra?

1 answer:

3 0

<u> $\Delta_A=5^2-4\cdot3\cdot1=25-12=13\\
\Delta_B=(-5)^2-4\cdot3\cdot1=25-12=13\\$

</u>Both discriminants are equal.<u>
</u>

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Can somebody help me please? Thank u! :)

tatuchka [14]

Answer:

1. last choice

2. first choice

Step-by-step explanation:

<h3><u>First</u><u> </u><u>Image</u></h3>

The reason why it is the last choice because when times keep going as distance also keeps increasing as well. But the last choice says that run at the end of track then turn around and run back. That means there must be a decreasing distance and a maximum value as well.

Therefore the only with max point/vertex is the absolute value which matches the last choice.

<h3><u>Second</u><u> </u><u>Image</u></h3>

First choice because the car straight forwards without any change. The car runs with a steady speed but the distance will keep changing without any change of distance.

So the answer is first choice.

6 0

3 years ago

How do you find 10% of 9900

Serhud [2]

Step-by-step explanation:

$10\% \: of \: 9900 \\ \\ = \frac{10}{100} \times 9900 \\ \\ = 10 \times 99 \\ \\ = 990$