Answer:
30 grams
Step-by-step explanation:
50-42=8
8÷2=4
4=1 year
5×4=20
50-20=30
Hope u can understant
a
the answer is a. 6 faces 12 edges and 8 vertices
x^2+14x+45=0
x^2+(9+5)x+45=0
x^2+9x+5x+45
x(x+9)+5(x+9)=0
(x+9)(x+5)=0
either x+9=0 Or,x+5=0
x+9=0
x=0-9
x=-9
x+5=0
x=0-5
x=-5
therefore x=-9,-5