Which polynomial correctly combines the like terms and expresses the given polynomial in standard form?

9xy^3 - 4y^4 - 10x^2y^2 + x^3y + 3x^4 + 2x^2y^2 -9y^4

a. -13y^4 + 3x^4 - 8x^2y^2 + x^3y + 9xy^3

b. -13y^4 + x^3y - 8x^2y^2 + 9xy^3 +3x^4

c. 3x^4 - 8x^2y^2 + x^3y + 9xy^3 - 13y^4

d. 3x^4 + x^3y - 8x^2y^2 + 9xy^3 - 13y^4

that is the sum

step-by-step explanation:

there are no other answers without knowing the variables values

step-by-step explanation :

we know that

the measurement of the outer angle is the semi-difference of the arcs which comprises

in this problem

m< xzy is the outer angle

substitute the values

the measure of angle xoy is equal to

> by central angle

substitute the value

answer

a) the midrange of the data set shown is 85.5

step by step explanation

let's find the midrange.

the midrange is nothing but add the greatest value and the least value, then divide it by 2.

here the greatest value = 99

the least value = 72

midrange = (99 + 72)/2

= 171/2

midrange = 85.5

you.

you need to upload the picture of the circle.

step-by-step explanation: