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3 years ago

Y = 2(x – 3)2 - 4 Convert to standard form

Mathematics

2 answers:

Klio2033 [76]3 years ago

8 0

Answer:

y = 2x² - 12x + 14

Step-by-step explanation:

The equation of a parabola in standard form is

y = ax² + bx + c ( a ≠ 0 )

Given

y = 2(x - 3)² - 4 ← expand (x - 3)² using FOIL

= 2(x² - 6x + 9) - 4 ← distribute parenthesis

= 2x² - 12x + 18 - 4

y = 2x² - 12x + 14 ← in standard form

Artist 52 [7]3 years ago

3 0

Answer:

4x - y = 16

Step-by-step explanation:

y = 2(x – 3)2 - 4

When written in standard form, this will be the answer --->

4x - y = 16

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Answer:

$3xy( {x}^{3} y + 5 {x}^{2} {y}^{2} )$

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3 years ago

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30% of what number is 70

katrin2010 [14]

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4 years ago

HELP I REALLY NEED HELP

zepelin [54]

Answer: 72 inches squared

Step-by-step explanation:

So, the real floor of a classroom is 36 feet by 32 feet.

And the scale drawing, has length of the classroom equal to 9 inches.

What is the area in square inches of the floor in the scale drawing

1 foot = 12 inches

The length of the classroom, measured in feet, has been multiplied by 12, to get converted in inches. After that, it has been divided by a number, a proportion, to get to 9 inches.

36feet * 12 / x = 9 inches

432 inches / x = 9 inches

Now, to solve for x, we can cross-multiply

432 inches = 9x inches

Divide 9 inches on both sides.

x = 48

To solve the exercise, we need to calculate the floor's area in the scale drawing.

We have the length = 9 inches.

Now, let's calculate the width

Width = 32 feet * 12 / 48

Width = 384 inches / 48

Width = 8 inches

Area = Length * Width

Area = 9 inches * 8 inches

Area = 72 inches squared

Hope I helped!

6 0

2 years ago

The seventh-grade class is building target areas for a PE activity. The bases for the game will be in a circular shape. The diam

lys-0071 [83]

By definition, the area of a circle is given by:
$A = \pi * r ^ 2
$
Where,
r: radius of the circle.
Substituting the values in the given expression, we have:
$A = 3.14 * (3) ^ 2

 A = 28.26 feet ^ 2$
Rounding to the nearest tenth we have:
$A=28.3feet^2$
Answer:
Approximately needed:
$A=28.3feet^2$

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4 years ago

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Determine the slope of the line represented by y = 2x - 9

lbvjy [14]

Answer:

Step-by-step explanation:

2x is the slope which is just 2

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3 years ago