Need in these two only school is starting tomorrow

Answer and explanation:

19.is 5th degree polynomial because the the ^ is 5 witch is a degree of 5 and there is four terms so its a polynomial

20 t will equal 49 because here is my work -16(4)^2+75(4)+5= -16(16)+300+5=-256+300+5=49

now here is some stuff to remember about 19

when ever you see something like 5x^2 its a 2nd degree monomial

when you see 5x^2+5 its a second degree binomial

when you see 6x^4+3x+2 its a 4th degree trinomial

but anything over 3 terms is a polynomial of what ever degree such as ^2 ^3 or even ^5 degree

Hope i helped you learn may i please have brainliest. Please ;)

x = 17

step-by-step explanation:

1st step: isolate x.

24 - 3x = -27

-24         -24

-3x   =   -51

2nd step: divide.

-3x     =   -51

  3             3

  x       =     17

hope this

b

step-by-step explanation:

it have 5 sides and 5 identicle angle.the rest does not have the same property as b.

brainliest