Please help me:( I’m not very good with parabolas

Mathematics

1 answer:

steposvetlana [31]3 years ago

3 0

Answer:

Direction of the parabola: Down

Step-by-step explanation:

The value of the coefficient of x² (represented by a ) determines whether the graph opens up or down.

* If a is positive, the graph opens up.

* If a is negative, the graph opens down.

Since the coefficient of x² is -1, then it means that the graph of the parabola opens downward.

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Find the measure of DC if m

kupik [55]

Answer:

B. 132°

Step-by-step explanation:

Find the measure of arc BD

m∠A = 1/2(arc BC - arc BD)
2*36° = 150° - arc BD
arc BD = 150° - 72° = 78°

Find the measure of arc DC

arc BD + arc BC + arc DC = 360°

arc DC = 360° - (150° + 78°) = 360° - 228° = 132°

Correct choice is B

7 0

3 years ago

b. Sixty-five pounds of candy was divided into four different boxes. The second box contained twice the amount of the first box.

Ainat [17]

First box = 14 pounds

Second box = 2x = 28 pounds

Third Box = x+2= 16 pounds

Fourth box = x/2 = 7 pounds

Step-by-step explanation:

Here we have , Sixty-five pounds of candy was divided into four different boxes. The second box contained twice the amount of the first box. The third box contained two more pounds than the first box. The last box contained one-fourth the amount in the second box. We need to find How much candy was in each box. Let's find out:

We have a total of 65 pounds of candy ! Let in first box we have x pounds so , second box contained twice the amount of the first box i.e.

⇒ $2x$