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3 years ago

Simplify: 3x2 - 4x - 5x2 + 8x

Mathematics

2 answers:

Sati [7]3 years ago

8 0

-2x^2+4x I hope this helps!

Afina-wow [57]3 years ago

7 0

-2x^2+4x
pls mark brainlest <3

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A colored chip is yellow on one side and red on the other. The chip was flipped 50 times and landed red side facing up 21 times.

faust18 [17]

42%

You have essentially a fraction, 21/50, which gives you a decimal of 0.42, or 42%.

(Flipped a total of 50 times, of those, it landed red side up 21 times, so 21/50)

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3 years ago

A ramp 12 feet long is leaning against a raised platform which is 5 feet above the ground. What is the distance from the ramp's

anygoal [31]

Answer:

The distance from the ramp's contact point with the ground and the base of the platform is 10.90 feet.

Step-by-step explanation:

A ramp 12 feet long is leaning against a raised platform which is 5 feet above the ground.

And

We have to determine the distance from the ramp's contact point with the ground and the base of the platform.

Since we are looking for the side of 'b' right triangle.

Please check the attached figure.

So using the Pythagorean formula:

Fora right angled triangle with sides a, and b the hypotenuse c is defined as

$c^2=a^2+b^2$

$b=\sqrt{c^2-a^2}$

$a=5$

$c=12$

$b=?$

$b=\sqrt{12^2-5^2}$

$b=\sqrt{119}$

$b=10.90$ feet

Therefore, the distance from the ramp's contact point with the ground and the base of the platform is 10.90 feet.

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4 years ago

Expand the expression as a product of factors (x-t)3

Leya [2.2K]

(x-t)(x-t) = x^2 - 2xt + t^2
(x^2 - 2xt + t^2)(x - t) = x^3 - 2x^2t + xt^2 - xt^2 + 2xt^2 - t^3
=
x^3 - t^3 - 2x^2t + 2xt^2

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3 years ago

Graph on a number line. -6/7

Korolek [52]

The answer would be C

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4 years ago

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Sage and Tom started the month with the same number of talk minutes on their cell phones. Sage talked for 7 minutes with her dad

AlekseyPX

Answer:

Step-by-step explanation:

x=number of talk mnutes

Sage uses 7 minutes = x-7

Tom uses 4 and 3 minutes = x-4-3 = x-7

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3 years ago

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