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2 years ago

18. Where does the graph of y = –2x2 + 6x cross the x-axis?

Mathematics

1 answer:

algol132 years ago

8 0

Answer:

(0,0) and (3,0)

Step-by-step explanation:

When you graph y= -2x^2+6x it turns out to be a parabola. So, that means that this parabola actually crosses two points on the x-axis; (0,0) and (3,0)

Hope this helps!

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The center of the inscribed circle of Triangle ABC is point , and the center of the circumscribed circle of Triagnle ABC is poin

quester [9]

Answer:

Part A: The center of The inscribed circle is the point S

Part B: The center of The circumscribed circle is the point P

Step-by-step explanation:

Part A: Find the center of The inscribed circle of ΔABC

The inscribed circle will touch each of the three sides of the triangle in exactly one point,

The center of the inscribed circle is the point of intersection between the angle bisectors of the triangle.

So, According to the previous definition:

A₁A₂ and B₁B₂ are the angle bisectors of ∠A and ∠B

So, the inter section between them is the center of The inscribed circle

So, the center of The inscribed circle is the point S

=====================================================

Part B: Find the center of The circumscribed circle of ΔABC

The circumscribed circle is the circle that passes through all three vertices of the triangle.

The center of the circumscribed circle is the point of intersection between the perpendicular bisectors of the sides.

So, According to the previous definition:

P₁P₂ and Q₁Q₂ are the perpendicular bisectors of AB and BC

So, the inter section between them is the center of The circumscribed circle

So, the center of The circumscribed circle is the point P

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3 years ago

Sound intensity of certain Vacuum Cleaner is a random variable having a normal distribution with a mean of 75 dB and a standard

fomenos

Answer:

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2 years ago

How can this 12×2+2³ make 120

Alex17521 [72]

Step-by-step explanation:

$12\times(2+2^3)\qquad\text{use PEMDAS}\\\\\text{first power}\\\\=12\times(2+8)\\\\\text{next addition in parentheses}\\\\=12\times10=120$

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2 years ago

The nth term of sequence is n2 + 20

saw5 [17]

Answer:

First three terms:

22,24,26

There are 15 terms in the sequence that are 50 or less, yet only 14 if its just less than 50.

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2 years ago

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Which is the angle of elevation from the submarine to the boat? <1, <2 ,<4 <3

grigory [225]

Answer:

Step-by-step explanation:

When an observer is at the same level with the submarine, his line of sight above the horizontal upward to the boat would form an angle called the angle of elevation.

Thus, the angle of elevation from the submarine to the boat is marked as <1. <1 is the angle of elevation from the submarine.

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2 years ago