Answer: $52.20
Steps:
First way:
10% = 0.1
$58 x 0.1 = $5.80
$58 - $5.8 = $52.20
Second way:
100% = 1
10% = 0.1
1 - 0.1 = .9
That means that when the 10% is taken off, 90% still has to be paid.
$58 x 0.9 = $52.20
After 7 years the laptop computer will be worth $200 or less.
In this question, we have been given a laptop computer is purchased for $1500 . Each year, its value is 75% of its value the year before.
We need to find the number of years when laptop computer be worth $200 or less.
We can see that given situation represents exponential decay function with initial value 1500, decay rate = 0.75 and the final value = 200
We need to find period t.
For given situation we get an exponential function as,
1500 * (0.75)^t ≤ 200
(0.75)^t ≤ 2/15
t * ln(0.75) ≤ ln(2/15)
t * (-0.2877) ≤ -2.0149
t ≥ (-2.0149)/(-0.2877)
t ≥ 7
Therefore, the laptop computer will be worth $200 or less after 7 years.
Learn more about exponential function here:
brainly.com/question/14355665
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Answer:
C ≈ 95.7°
Step-by-step explanation:
Law of cosines:
c² = a² + b² − 2ab cos C
where a, b, and c are the sides of the triangle, and C is the angle opposite of side c.
9² = 5² + 7² − 2(5)(7) cos C
81 = 25 + 49 − 70 cos C
81 = 25 + 49 − 70 cos C
7 = -70 cos C
-1/10 = cos C
C ≈ 95.7°
Answer:
x = 1/4
Step-by-step explanation:
−12x=−3 (Given)
x = 0.25 (Divide) (value became positive because negative was divided by negative).
0.25 in fraction = 1/4
Adventitious roots , which sprout off stems under water or just above water surface.
