Answer:
12 is the answer.
Step-by-step explanation:
The best way to get the roots of the equation is to factorize the equation but when the factors are not possible then we should apply the quadratic equations formula to get the value of x.
Now we will try to factorize
x² - 8x -48 = 0
Now we multiply coefficient of highest degree term and constant term
48×1 = 48 which may be factored in 12×4. 8×6, 24×2.
Now we will choose 12×4 out of three because the 12-4 = 8 which is the coefficient of x.
Now its simple.
x²-12x + 4x -48 = 0
x(x -12) + 4(x-12) = 0
(x +4)(x-12) = 0
Therefore roots are x + 4 = 0
x = -4
and x - 12 = 0
x = 12
So the answer is 12.
Answer:
multiply both sides by ten
Step-by-step explanation:
eliminate the ten by doing the opposite (x10 is the opposite of /10). and then you get the answer 30=r
Chris' still water speed is 3mph, and the current's is 1.5mph... well, when Chris is going upstream, he's really not going at 3mph, since is not still water, the water is actually running, so, he's going " 3 - 1.5 " mph.
now, recall you d = rt, distance = rate * time
Answer:
6.25
Step-by-step explanation:
- BE = BC - EC = 12 - 7 = 5
BE/BC = BD/AB
5/12 = BD/15
BD = 15(5/12) = 6.25
95.84
89.82
---------
185.66
you add decimals the same way as whole numbers but make sure the decimals are aligned
