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AleksAgata [21]
3 years ago
15

Which equation is y = –3x2 – 12x – 2 rewritten in vertex form?

Mathematics
2 answers:
WARRIOR [948]3 years ago
7 0
Y=-6-12x-2
y=-6-12x-2
y=-8-12x
y=-8-12x
and these are real numbers
inysia [295]3 years ago
5 0

Answer:

The vertex form of the given equation is y=-3(x+2)^2+10.

Step-by-step explanation:

The vertex form of a parabola is

y=a(x-h)^2+k.

The given equation is

y=-3x^2-12x-2

y=(-3x^2-12x)-2

Take the common coefficients.

y=-3(x^2+4x)-2

If an expression is defined as x^2+bx, then we need to add (\frac{b}{2})^2 to make it perfect square.

Here b=4, so we need to add (\frac{4}{2})^2 in the parenthesis.

y=-3(x^2+4x+2^2-2^2)-2

y=-3(x^2+4x+2^2)-3(-2^2)-2

y=-3(x+2)^2-3(-4)-2

y=-3(x+2)^2+12-2

y=-3(x+2)^2+10

Therefore the vertex form of the given equation is y=-3(x+2)^2+10.

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A square has one of its sides increased by 7 inches and the other side decreased by 4 inches. Which of the following represents
Anna71 [15]

Answer:

Step-by-step explanation:

both the length and the width of a square is the same measurement.

so if both measured to "x" then that means one side increase +7.

so one side is x + 7

and the other side decreased -4

so the other side is x - 4

area of square = length x width or just one of the sides to the power of 2

so (x+7) * (x-4) = Area

x^2 + 3x - 21 = area

7 0
3 years ago
Read 2 more answers
What is the average rate of change from x = 0 to x = 4?
hammer [34]
1) find the corresponding y values for when x = 0 and when x = 4,
when x = 0, y = 4
when x = 4, y = 4

the coordinates are (0,4) and (4,4)

2) to calculate the average rate of change, find the slope of the two points:

(0,4) (4,4)

(change in y) 4 - 4 = 0
(change in x) 4 - 0 = 4

0/4 = 0

the average rate of change is 0!
3 0
3 years ago
30 points on this question simply find the volumes of tank a and then find the volume of tank b.
maksim [4K]

Answer:

volume of tank a=65.63

volume of tank b=61.88

Step-by-step explanation:

3.5*3.75*5=65.63

3*3.75*5.5=61.88

brainliest plz

7 0
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Which will be the digit in ONE’S place in multiplication 3x5x7x9
Harman [31]

Answer:

5

Step-by-step explanation:

3x5x7x9=945

9 is in the hundreds place

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which means 5 must be in the ones

8 0
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5 points free, good job
Vilka [71]

Answer:

ok, what's the question?

Step-by-step explanation:

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