Answer:
x² + 4x + 20 = 12x - 5
x² + 4x - 12x + 20 + 5 = 0
x² - 8x + 25 = 0
Δ = √b² - 4ac
= √(-8)² - 4×1×25
= √64-100
= √(-36)
x ∉ R
The answer to the question is
52b - 43
Answer: a, 7ft
Step-by-step explanation:
The cost before increase was $550.
Step-by-step explanation:
Given,
Increased price of plane ticket = $616
Increase percent = 12%
Let,
x be the original price of ticket.
Now,
The original price is 100% and 12% is increased, therefore;
New price = (100+12)% = 112%
Thus;
$616 is 112% of x.
112% of x = 616
Dividing both sides by 1.12
The cost before increase was $550.
Keywords: division, percentage
Learn more about division at:
#LearnwithBrainly
Answer:
yes, its linear and proportional .
Step-by-step explanation:
In mathematics, two varying quantities are said to be in a relation of proportionality, if they are multiplicatively connected to a constant, that is, when either their ratio or their product yields a constant. The value of this constant is called the coefficient of proportionality or proportionality constant.
you just have to graph it .
hope i helped :) !!! brainliest ??
