Simplifying polynomials
nhich polynomial correctly combines the like terms and puts the given polynomial in standard form?
-58°y? + 8x4y2 - xy– 2x²y4 + 8x + 3x²y4 - 6xys
-7xy + 5xły4 – 5x®y3 + 8x4y2 + 8x6
5x75 + 8x4y2 + x²y4 - 5rºy3 + 8x6
8x6 + 5x75 + 8x4y2 + xły4 – 58°43
8x6 + 8x4y2–5xºy3 + x²y4 – 7xy5
intro

54 kilometers per hour

step-by-step explanation:

according to rules:

1 km = 1000 meter

which means that 1 meter = 1/1000 km

1 hour = 3600 second [ as 1 hour = 60 min = 60 *60 seconds ]

which means that 1 second = 1/3600 hour

therefore, 1 kilometer/hour =

thus to convert 15 meter per second to kilometer per hour, we multiply 15 to 3.6 kilometer/hour.

15 meter/second=   which is the required answer.

answer: 204

step-by-step explanation:

we are told that the revenue is

x⋅(4080−10x)=−10x^2+4080x

this is a quadratic function, so to maximize it we should find the x-value of its vertex. recall that the x-value of the vertex of the parabola ax^2+bx+c is given by the formula −b/2a.

so in this case, we have a=−10 and b=4080, so the x-value of the vertex is

−b/2a= −(4080)/2(−10)=204