HELP ME PLEASEE Which of the following are polynomial functions?
Check all that apply
I A. F(x) = 4x^4-10
B. F(x) = -x^3+5c^2+7 √7x-1
C. F(x)=3/5x^4-18x^2+5-10/x^2
D. F(x) = 5.3x^2 + 3x-2
E. F(X) = x^2 + 15x - 3

A, D and E

Step-by-step explanation:

By definition, a polynomial consists of variables raised to exponents which are not fractions or negative, with the terms linked by arithmetic operators such as addition, subtraction etc

From this definition, A is a polynomial, B is not as it contains a square root which is a fractional power

C is not, as there is a negative power of x

D and E are polynomials too

a) one student is chosen from classroom a, then a student is chosen from classroom b.  

step-by-step explanation:

independent events are ones in which the probability of one event does not affect the probability of the second event.

one student is chosen from classroom a; this does not affect the chances of choosing a student from classroom b.   this makes these independent events.

when one card is chosen from a standard deck and then set aside before a second card is chosen, the probability of the second card being chosen changes.   this makes them dependent events.

when one student is chosen from classroom a and then a second student is chosen from classroom a, the probability of choosing the second student changes.   this makes them dependent events.

when a letter is chosen from the alphabet and then a second letter is chosen, the probability of choosing the second letter changes.   this makes them dependent events.

12cm

the answer is d