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3 years ago

Rewrite the function by completing the square 4x^2-16x +7

Mathematics

1 answer:

tia_tia [17]3 years ago

6 0

Answer:

$(2x-4)^2-9 => 4(x-2)^2-9$

Step-by-step explanation:

$=> 4x^2-16x+7\\ =>(2x)^2-2*(2x)*(4)+7\\ =>(2x)^2-2*(2x)*(4)+(4)^2-(4)^2+7\\ =>(2x-4)^2-9\\ =>4(x-2)^2-9$

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Help I don’t get this what is the standard form of y=-2x+3

Kay [80]

Hi there!

Standard form of the given equation is going to be: 2x+y=3

Let me know if this helps! Have a great night.
~Brooke

7 0

3 years ago

Read 2 more answers

Solve the inequality for 8w-35< 3−(5-4w) Simplify the answer as much as possible

Finger [1]

Answer:

w<33/4

Step-by-step explanation:

8w-35<3-(5-4w)

8w-35<3-5+4w

8w-35<-2+4w

8w-4w-35<-2

4w-35<-2

4w<-2+35

4w<33

w<33/4

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2 years ago

Help please ?! I need answers really fast

Aleonysh [2.5K]

The value of x in terms of p is 15/p.

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2 years ago

Mike hiked to a lake in 4.5 hours at an average rate of 2

aleksandrvk [35]

Answer:

It took Pedro 3.81 hours to reach the lake.

Step-by-step explanation:

Time taken by Mike to hike a lake = 4.5 hours

Average rate of Mike while hiking the lake = $2\frac{1}{5}\ miles/hr$

Formula for distance can be seen as:

$Distance = Speed\times Time$

Distance traveled by Mike = $4.5 \times 2\frac{1}{5} = 4.5\times \frac{11}{5} = 9.9\ miles$

Rate of Pedro while hiking the same distance = $2\frac{3}{5}\ miles/hr = \frac{13}{5}\ miles/hr$

Given that, Pedro also travels the same distance.

And we have to find the Time.

$Time = \dfrac{Distance}{Speed}$

$Time = \dfrac{9.9}{\frac{13}{5}}\\\Rightarrow Time = \dfrac{9.9\times 5}{13} = \bold{3.81\ hours}$

It took Pedro 3.81 hours to reach the lake.

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2 years ago

Hi can I have help with my work

gogolik [260]

Answer:

Sure what do you need?

Step-by-step explanation:

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2 years ago