It takes 6 seconds for it to hit the ground.
0 = -5x²+20x+60
We can solve this by factoring. First factor out the GCF, -5:
0 = -5(x²-4x-12)
Now we want factors of -12 that sum to -4. -6(2) = -12 an -6+2 = -4:
0 = -5(x-6)(x+2)
Using the zero product property, we know that either x-6=0 or x+2=0; this gives us the answers x=6 or x=-2. Since we cannot have negative time, x=6.
Look at the picture.

For XY and ZX use the Pythagorean theorem.


The perimetero fo XYZ:

I would say B .
They are not like terms because they are not all the same
Answer:
The correct answer should be : Word parts
Step-by-step explanation:
Answer:
2:1 =36mm: x m
2/1 = 36mm/ m......(Criss cross)
36mm x 1M/2mm = 18 Meter