The answer would be all of the above because they are all connecting.
C. -4 because you factor and add like terms
Answer:
x = ± √(-15n-7) / √2n (± (-15n-7)^(1/2) / (2n)^(1/2))
Step-by-step explanation:
Factoring?
2nx² + 15n+7 = 0
2nx² + 0*x + (15n+7) = 0 ... ax²+bx+c=0
Roots: x = (-2b ± √b²-4ac)) / 2a = (0 ± √0-4*2n*(15n+7)) / 4n
x = ± (√8n (-15n-7)) / 4n = ± (2√2n(-15n-7)) / 4n = ± (√2n(-15n-7)) / 2n
or x = ± √(-15n-7) / √2n
9.75 ft
Since the triangles formed by the heights and shadows, the ratios of corresponding sides are equal.
the corresponding sides are the heights and the lengths of the shadows
let h be the height of the tree, then
= ( cross- multiply )
12h = 4.5 × 26 = 117 ( divide both sides by 12 )
h = 9.75
hence the height of the tree is 9.75 ft
Answer: 6
Step-by-step explanation: -24/-4 = 6.