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Alexeev081 [22]
3 years ago
5

using three data points (x,y) that we know Evil passed through and the general quadratic equation, create three corresponding eq

uations:
Mathematics
1 answer:
Katen [24]3 years ago
7 0
The general quadratic equation is y = ax^2 + bx + c.

Let's see whether it's possible to invent 3 separate points thru which the graph of a quadratic passes and then to create 3 equations in a, b and c:

Suppose the points are (-3,2), (-1,1) and (2,4).

Focus on (-3,2):  Here x= -3 and y= 2.  Then 2 = a(-3)^2 + b(-3) + c, or
                                                                        2 = 9a - 3b + c

Do the same thing for the other 2 points, (-1,1) and (2,4).

When you're done, you'll have 3 linear equations in the variables a, b and c.

You were not asked to solve for a, b and c.

If you want, however, we could go thru that process.
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arsen [322]

Answer:

x = 40

Step-by-step explanation:

In order for m and n to be parallel, the corresponding angles need to be equal. Therefore we get the equation:

3x = 120

Divide both sides by 3 to get:

x = 40

6 0
3 years ago
If you help me I’ll mark brainliest
Ivahew [28]

Answer:

∠2=92°

Step-by-step explanation:

Using an angle formula, -8x+144=2x+74

Simplification:

-8x+144=2x+74

-8x+70=2x

70=10x

x=7

Therefore, each angle is 88°

Now, because ∠2 is adjacent to one of 88°, they add up to 180°

Therefore,

180°=88°+∠2

∠2=92°

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2 years ago
Lines AB and CD are parallel. If 6 measures (3x - 34)°, and 8 measures 154°, what is the value of x?
Lera25 [3.4K]

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x=20 I believe but I could be wrong

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12 can be divisible by 8,4
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3 years ago
Lol I’m dumb please help
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The answer is 50, just divide 10 and 2, you get 5 and multiply the 5 with the 10

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