Let me express the equation clearly:
lim x→-9 (x²-81)/(x+9)
Initially, we solve this by substituting x=-9 to the equation.
((-9)²-81)/(-9+9) = 0/0
The term 0/0 is undefined. This means that the solution is not see on the number line because it is imaginary. Other undefined terms are N/0 (where N is any number), 0⁰, 0×∞, ∞-∞, 1^∞ and ∞/∞. One way to solve this is by applying L'Hopitals Rule. This can be done by differentiating the numerator and denominator of the fraction independently. Then, you can already substitute the x=-9.
(2x-0)/(1+0) = 2x = 2(-9) = -18
The other easy way is to substitute x=-8.999 to the original equation. Note that the term x→-9 means that x only approaches to -9. Thus, you substitute a number that is very close to -9. Substituting x=-8.999
((-8.999)²-81)/(-8.999+9) = -18
Answer:
70
Step-by-step explanation:
"75% more customers than last week" means (100% + 75%) of 40, or
1.75(40 customers) = 70 customers this week
Answer:
x = -11
Step-by-step explanation:
It would be 7.62 centimeters. Just multiply how many inches you have by 2.54, and you'll have your conversion.
~Silver
Answer:
The answer is option C=150%
Step-by-step explanation:
Original cost of the jacket=$16 in January
Final cost of jacket=$24 in September
What percentage must of the original price is the new?
The new price=the original price×(A percentage)
Where the new price=$24, the original price=$16, and the percentage=(x/100)
24=16×x/100
x=(24×100)/16=150%
The answer is 150%
