Which system of equation
3.1 lizzy has 30 coins that total $4.80. all of her coins are dimes. d and quarters, q. which
models this situation?
d+q = 4.80
d+q=30
10.10d +0.250 = 30
b.)
10.10d +0.25q = 4.80
d + 0 = 30
10.25d + 0.100 = 4.80
d.)
d + 0 = 4.80
10.25d +0.10q = 30

false

step-by-step explanation:

the reason i say this is because for a certain length of sides you can pick any two and the length is wither equal or greater than the third side and in this case it's not.

3 + 5 = 8

8 is smaller than 9 which is the third side.

hope this : )

hello there!

i believe the answer is

(cot2+1)/sec2=cot2

    csc2/sec2=cot2

  (1/sin2)/(1/cos2)=cot2

  (1/sin2)(cos2/1)=cot2

  cos2/sin2=cot2

  (1/tan2)=cot2

  (cot2)=(cot2)

hope this !

hyperz ^_^