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Yuki888 [10]
2 years ago
6

A person who is at least 18 years old is considered an adult. Write an inequality that represents this situation

Mathematics
1 answer:
Fiesta28 [93]2 years ago
6 0

Answer:

a \geq 18

Step-by-step explanation:

The question concerns the use of inequalities in correct mathematical language.

When we have the condition "at least", it means something is greater than and equal; when we have the condition "at most", it is lesser than and equal.

In this case, we must use the former condition. Let's denote age with the letter a.

Then, the correct inequality is going to be:

a \geq 18

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Answer:

The circumference of a circle is not the same as the area of the circle because the circumference represents the distance around the circle while the area represents the amount of space within the circle. Hope this helps.

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A toy airplane costs $4.84.. It costs 4 times as much as a toy car. What is the cost of the toy car? Show your work.
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Which is the interval notation represent the domain?
Kazeer [188]

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The first choice, (-\infty, 7) \cup (7, \infty).

Step-by-step explanation:

The dashed vertical line is a vertical asymptote. The x-coordinate of all points on this vertical asymptote are equal to 7. In other words, when the x-value of a point on the graph approaches 7, its y-value approaches infinity (or negative infinity.)

Either way, the graph is not defined for x = 7. The point 7 should thus be excluded from the domain of the graph.

The graph is apparently defined for all other x-values. The domain of the function should thus be all real numbers with the exception of x = 7. Here's how to write that in interval notation:

  • The set of all real numbers can be expressed as the interval (-\infty, \infty). Note that infinity \infty (or (- \infty) itself isn't a real number. The round brackets indicate that both endpoints are excluded from the from the interval.
  • The set of all real numbers less than (not equal to) 7 is (-\infty,7 ) (both ends are excluded.) The set of all real numbers greater than (not equal to) 7 is (7, \infty).
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In other words, the domain is (-\infty, 7) \cup (7, \infty).

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Answer:

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  2. Simplify: 37200/100 = 372/1 = 372

I hope this helps!

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