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3 years ago

Y=4x^2-4x-8 using the quadratic formula

Mathematics

1 answer:

densk [106]3 years ago

8 0

Answer:

4(x+1)(x-2)

Step-by-step explanation:

factor the expression: 4x^2-4x-8

4(x^2-x-2)

write as a difference: 4(x^2+x-2x-2)

factor out x: 4(x(x+1)-2(x+1)),

then factor out x+1:

4(x+1)(x-2)

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Does (–3, 17) make the equation y = 6x + –1 true?

telo118 [61]

Answer:

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Step-by-step explanation:

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6 0

2 years ago

What is the volume of a rectangular prism that has a length of 9 feet, a width of 5 feet, and a height of 7.5 feet? 300 ft3 150

Deffense [45]

Answer:

The answer is 337.5.

Step-by-step explanation:

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6 0

3 years ago

Read 2 more answers

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fgiga [73]

Answer:

The length of side of largest square is 15 inches

Step-by-step explanation:

The given suares are when joined in the way as shown in picture their sides form a right agnled triangle.

Area of square 1 and perimeter of square 2 will be used to calculate the sides of the triangle.

So,

Area of square 1: 81 square inches

$s^2 = A\\s^2 = 81\\\sqrt{s^2} = \sqrt{81}\\s = 9$

Perimeter of square 2: 48 inches

$4*side = P\\4* side = 48\\side = \frac{48}{4}\\side = 12\ inches$

We can see that a right angled triangle is formed.

Here

Base = 12 inches

Perpendicular = 9 inches

And the side of largest square will be hypotenuse.

Pythagoras theorem can be used to find the length.

$(H)^2 = (P)^2+(B)^2\\H^2 = (9)^2+(12)^2\\H^2 = 81+144\\H^2 = 225\\\sqrt{H^2} = \sqrt{225}\\H = 15$

Hence,

The length of side of largest square is 15 inches

5 0

2 years ago

49 decreased by twice a number

saveliy_v [14]

Answer:

3x-x+2=4

Step-by-step explanation:

6 0

3 years ago

What is the sum? Thank you!

timurjin [86]

Answer:

50 is the sum

Step-by-step explanation:

-10+20=10

10+-40=-30

-30+80=50

5 0

2 years ago