The correct answer is C.
Because: 2.9 multiplied by 10 bags equals 29cubic ft and she needs 30 cubic ft. So she would need to buy 11 bags to make sure she has enough sand for the whole thing. 11 x 2.9 = 31.9 which ensures she has enough for the whole thing including extra in case. So you answer would be Answer C.
determinant: 
(a) 
D<0 means there are no real roots. there are two complex roots with imaginary components.
(b) D=16+20=36>0
D>0 means there are two real roots
(c) D = 20^2-4*4*25 = 0
D=0 means there is one real root with multiplicity 2
Answer:
102471 sq .in the land answer Teri ma ki bosra
Hey there! :D
These are
vertical angles. They have the same measure, so they are equal to each other.

Subtract 25 on both sides.

Subtract 2x on both sides.

Divide both sides by 4.

I hope this helps, and have a nice day!
~kaikers
Answer:
lol im in ur math class
Step-by-step explanation:
thx for the points tho