Hello,
u(n)=2n+5
u(1)=2*1+5=7
u(2)=2*2+5=9
u(3)=2*3+5=11
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Answer: the solution to the inequality is -3 < x < 4. Graphically, this should be (2)
Step-by-step explanation:Note that x^2 - x - 12 factors to (x - 4)(x + 3) < 0, so we have:
(x - 4)(x + 3) < 0.The only way for (x - 4)(x + 3) to be negative is if x - 4 and x + 3 have opposite signs. This only occurs when:
(i) x - 4 < 0 AND x + 3 > 0
==> x < 4 AND x > -3; both occur when -3 < x < 4.
(ii) x - 4 > 0 and x + 3 < 0, which cannot happen at the same time.
Graph it like you would a normal equation except if it's not "equal to" it's a dashed line instead of solid line. Then shade the appropriate area on the graph,
for example..
y > 2x +1
is graphed as a dashed line y = 2x +1 since it doesn't actually equal y.
y is greater than the line/equation so the area above is shaded where y is bigger
B………………………………………………………………………………
Answer:
3-(-6) = 9
Step-by-step explanation:
3-(-6) simplifies to 3 + 6.
We would have to distribute the outside negative into the inside to get rid of the parenthesis. Then, we would add.
Hope this helps.