Answer:
O C. 0
Step-by-step explanation:
What is the sum of 15 and its additive inverse?
In Mathematics, the additive inverse of a number is defined as the number that when it is added to a specific number equals 0
From the above question, the additive of 15 = -15
Therefore, the sum of 15 and its additive inverse is calculated as:
15 + -15
= 15 - 15
= 0
Therefore, Option C is the correct option
Using the quadratic formula, the solutions are:
a) 
b) 
<h3>What is a quadratic function?</h3>
A quadratic function is given according to the following rule:
The solutions are:
In which:
Item a:
The coefficients are a = 2, b = -3, c = -4, hence:
Item b:
The coefficients are a = 1, b = 2, c = 2, hence:
More can be learned about quadratic equations at brainly.com/question/24737967
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Given ratio : 90 lbs on earth :15 lbs on the moon.
Let us write 90 lbs :15 lbs in fractions first.
90:15 = 90/15
Now, in order to determine different strategy, we need to find any equivalent fraction/ratio of the given fraction or ratio.
In order to find an equivalent fraction or ratio, we need to find a common number that can divide( even we can multiply) both numerator (top number) and denominator (bottom number).
For the given ratio 90/15, we can divide 90 and 15 both by 15.
90 ÷ 15 = 6
15 ÷ 15 = 1
Therefore, 90 lbs on earth :15 lbs on the moon could be written as 6 lbs on earth :1 lbs on the moon.
Since the length of the original painting is 108 inches, you take 1/12 and multiply it by 108 and get 9 inches.
the length of Sammy's drawing is 9 inches.
