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Alona [7]
3 years ago
8

Converting from vertex to standard form plzz help ;( ​

Mathematics
1 answer:
Trava [24]3 years ago
5 0

Answer:

x²-4x+7

-x²-6x-12

Step-by-step explanation:

1.) the first thing we do is expand the exponent (or mulitply  (x-2)(x-2) the images below will show you how to do that

We get x²-4x+4 and then just need to add three

x²-4x+7

2.)

We do the same thing (expand the exponent) and get x²+6x+9

which means so far we have

-(x²+6x+9)-3

carry out the negative sign and subtract 3

-x²-6x-12

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Delvig [45]

Answer: 8 hours

Step-by-step explanation:

Let x be the time taken by each person to paint the fence.

Given: Tom and Becky can paint Jim's fence together in 12 hours.

Since all people paint at the same rate, then we have the following equation ;-

\dfrac{1}{x}+\dfrac{1}{x}=\dfrac{1}{12}\\\\\Rightarrow\ \dfrac{2}{x}=\dfrac{1}{12}\\\\\Rightarrow\ x=24

Thus, the time taken by each person to paint the fence alone = 24 hours

Now, the time taken by all three paint together:-

\dfrac{1}{t}=\dfrac{1}{24}+\dfrac{1}{24}+\dfrac{1}{24}\\\\\Rightarrow\ \dfrac{1}{t}=\dfrac{3}{24}\\\\\Rightarrow\ t=\dfrac{24}{3}=8\text{ hours}

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3 years ago
Erin recycles milk bottles, soda cans, and newspapers. If the following items are in the trash bin, what percent of the items ca
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Answer:

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the rest is compost

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multiply by 100

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<h2><u><em>B.65%</em></u></h2>

Step-by-step explanation:

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3 years ago
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Answer:

that will be 40(wire)-12(rope)=28parts

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6meter wire div by 0.15 eq to 40

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The first one is A and the second one is D.

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