Which defines the relationship between the number -9 and its additive inverse?

Mathematics

2 answers:

mote1985 [20]2 years ago

6 0

Answer:

D. (-9)+9=0

Step-by-step explanation:

Additive inverse means that the sum of the original number and its Additive inverse must add upto 0. In this case, if we add -9 and 9 then we get 0. That's why D is the correct answer.

maw [93]2 years ago

3 0

The Additive Inverse Property states that the sum of a real number and its opposite is 0.

a + (-a) = 0.

Therefore, the correct answer is Option D): (-9) + 9 = 0

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Louie is trying to find a rectangular canvas for his art project. Its height must measure 18 inches and form a 48° angle with th

KengaRu [80]

Answer:

27 inches

Step-by-step explanation:

To find the length of the diagonal, we just need to use the cosine relation of the 48° angle.

The adjacent side to the angle is the height of the canvas, and the hypotenuse formed is the diagonal of the canvas. So, we have that:

cos(48) = height / diagonal

0.6691 = 18 / diagonal

diagonal = 18 / 0.6691 = 26.9 inches

Rounding to the nearest inch, the diagonal of the canvas measures 27 inches