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3 years ago

Write y=-3x^2+12x-21 in vertex form

2 answers:

6 0

The vertex form of any function is : f(x) = a(x-h)^2 + k
Hence the correct option would be: A): "-3(x-2)^2-9"

riadik2000 [5.3K]3 years ago

5 0

Complete the square:
y = 3x^2 - 12x + 4 
y = 3(x^2 - 4x) + 4 
y = 3(x^2 - 4x + 4 - 4) + 4 
y = 3(x^2 - 4x + 4) - 12 + 4 
y = 3(x - 2)^2 - 8

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In your computation, approximate its value as 3.14.

andrey2020 [161]

Answer: d

Step-by-step explanation:

Find the area of the rectangle.

$A=l*w\\A=(15in)(12in)\\A=180in^2$

Find the area of the base of the semicircle.

$A=\pi r^2$

12 in would be the diameter, divide by 2 to get the radius.

$\frac{12}{2}=6$

Plug this into the formula.

$A=(3.14)(6)^2\\A=113.04in^2$

Since we do not have a full circle but a semi one instead, we must divide our result by 2.

$\frac{113.04}{2}=56.52in^2$

Add both areas.

180+56.52=236.52 $in^2$

7 0

3 years ago

Suppose that in 6 minutes, 36 gallons of water came out the pipe. what was the rate in

Tom [10]

Answer:

6 gallons in one minute :)

Step-by-step explanation:

3 0

3 years ago

How do you solve -4x - 10 < 2

viva [34]

There is a way and you will find it but not from me

5 0

3 years ago

Could yall solve this and tell me how you did it I'm so confused 5/6 ÷(-11/7)=

Sedbober [7]

the answer is -35/66

to divide fractions you take the reciprocal of the second fraction (switching the numerator and denominator) and multiply it so the equation turns into

5/6*(-7/11) = -35/66

hope you understand now

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3 years ago

Kayla uses 3/4 tablespoon of glitter for each craft project she is making. She used a total of 4 1/2 tablespoons of glitter. How

iris [78.8K]

The answer would be 6 crafts

3 0

3 years ago

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