Will mark brainliest! what is the product of the polynomials? (2x^2-x+1)( x-3) explain answer choices: a) 2x^3-7x^2+4x-3 b) 2x^3-7x^2+3x-3 c) 2x^3-6x^2+3x-3 d) 2x^3-6x^2+4x-3

We multiply 2x^2 - x + 1 by x and by -3 and add it all up:

A

2x^3 - 7x^2 + 4x - 3.

Step-by-step explanation:

(2x^2-x+1)( x-3)

= x(2x^2 - x + 1) - 3(2x^2 - x + 1)

= 2x^3 - x^2 + x - 6x^2 + 3x - 3

= 2x^3 - 7x^2 + 4x - 3.

step-by-step explanation: a reaction is first order. if the initial reactant concentration is 0.0200 m, and 25.0 days later the concentration is 6.25 x 10-4 m, then its half-life is:

-3

step-by-step explanation:

a drawing really does here:

so i draw the horizontal line y=2 and the vertical line x=-2 at this intersection i put b (this is where my right angle is going to be).   so point b is at (-2,2).   point a is 5 units long and is also on y=2 so this point has to be (3,2) or (-7,2) -doesn't matter i will go with (3,2).

now we know c is at (-2,y) we don't know the y yet bet we know that c is on x=-2.

we have the area of the triangle is .5bh=12.5

we know the base length is 5 (ab)

we have the height is (2-y) if you look at your

plug in

.5(5)(2-y)=12.5

solve for y to get the y-coordinate for c

2.5(2-y)=12.5

divide both sides by 2.5 giving:

2-y=5

now subtract 2 on both sides

-y=3

y=-3