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aleksandrvk [35]
3 years ago
7

The directrix of a parabola is the line y=-2 and the focus is (2,-4). This parabola can be written in y=ax^2+bx+c form. Complete

the table to determine the values of a, b, and c for the parabola.
Mathematics
1 answer:
miv72 [106K]3 years ago
7 0

Answer:

Step-by-step explanation:

This calculator will find either the equation of the parabola from the given ... latus rectum, focus, vertex, directrix, focal parameter, x-intercepts, y-intercepts of ... Assume that the equation of the parabola is $$$y=a x^{2} + b x + c$$$. ... Since the parabola passes through the point $$$\left(2, 9\right)$$$, then $$$9=4 a + 2 b + ...

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Three investors own a company. One partner owns One-fourthof the company, while the second partner owns Two-fifths of the compan
Lelechka [254]

Answer:

7/20

Step-by-step explanation:

2/5 = 8/20

1/4 = 5/20

20/20 - 13/20 = 7/20

5 0
3 years ago
Lex is at the mall, which is 8 miles from his house. Lex walks home at a constant rate of 2 miles an hour.
egoroff_w [7]
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4 years ago
Logan saved $35 from cutting the neighbor’s yard. He earns $10 a week from washing dishes, which he also saves. Which function c
balandron [24]

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7 0
2 years ago
Help please!
Anna71 [15]

Answer:

y= -4x^2 + 15x - 14

Step-by-step explanation:

A parabola is always in the form y = ax^2 + bx + c.

Substitute each point to produce different equations:

-14 = 0a + 0b + c = c

so c = -14

-3 = a1^2 + b1 + c = a + b - 14

so a + b = 11

0 = a2^2 + b2 + c = 4a + 2b -14 = 0

so 4a + 2b = 14

if we double a + b = 11 we get 2a + 2b = 22

Subtract this from 4a + 2b = 14 and we get 2a = -8 so a= -4 and b = 11 - a = 15

We don't need to use the (3,5) points as we have all the information we need.

4 0
3 years ago
Read 2 more answers
I need help for these 2 problems the reason it’s already written is because I got them wrong (20 pts)
lawyer [7]

Answer:

I'm so so sorry but I cant really see what those say... Again, I'm very sorry about this...

Step-by-step explanation:

8 0
2 years ago
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