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larisa [96]
2 years ago
10

A parabola has a vertex at the origin. The focus of the parabola is located at (–2,0).

Mathematics
1 answer:
12345 [234]2 years ago
5 0

dam what Answer:

Step-by-step explanation:dom

no it’s not working

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Can someone please clearly and correctly solve and show me how to work out QUESTION 3 AND 4??
vredina [299]
There are 2 options to solve that.
1. The first one is by derivatives. 
f(x)=x^2+12x+36
f'(x)=2x+12
then you solve that for f'(x)=0
0=2x+12
x=(-6)
you have x so for (-6) solve the first equation, then you find y
y=(-6)^2+12*(-6)+36=(-72)
so the vertex is (-6, -72)
2. The second option is to solve that by equations:
for x we have:
x=(-b)/2a
for that task we have
b=12
a=1
x=(-12)/2=(-6)
you have x so put x into the main equation
y=(-6)^2+12*(-6)+36=(-72)
and we have the same solution: vertex is (-6, -72)

For next task, I will use the second option:
y=x^2-6x
x=(-b)/2a
for that task we have
b=(-6)
a=1
x=(6)/2=3
you have x so put x into the main equation
y=3^2+(-6)*3=(--9)
and we have the same solution: vertex is (3, -9)

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2 years ago
. Sara collected $135 in donations for the hospital. This represents 5% of the total amount collected by her class. How much did
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An ellipse has vertices of (5, 0) and (–5, 0) and covertices of (0, 2) and (0, –2). Use the given information to answer the ques
ValentinkaMS [17]

Answer:

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The foci are located at about ?

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The directrices are located at about?

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Step-by-step explanation:

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3 years ago
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Strike441 [17]
<span>2r2 + 3s3 − r2 + 4t2 − r2
</span>
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Last year the cost of Mr. patten’s car insurance was 86.80 per month. This year it inscreased by 5 percent. What was the cost of
marissa [1.9K]

Answer:4.34

Step-by-step explanation:

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