The answer is (-∞.∞).
Draw out a number line. Plot 0 and -4 on the number line.
Shade to the left of x = 0, and have a filled in circle at the endpoint. This is the graph of x≤0
Then graph x ≥−4 by plotting a filled in circle at -4, and shading to the right.
Note how the two graphs overlap to cover the entire real number line
So if we have x≤0 or x≥−4 then we're basically saying x is any real number. To write this in interval notation, we write (−∞,∞)
This is the interval from negative infinity to positive infinity (or just infinity). We exclude each endpoint because we can't actually reach infinity itself. Infinity is not a number. Infinity is a concept
Side note: if you change the "or" to "and", then the solution to x≤0 and x≥−4 would be [-4, 0][−4,0] to indicate the interval from x = -4 to x = 0, including both endpoints. This is the region where the two graphs overlap.
To know more about graphs
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Answer:
11.5
Step-by-step explanation:
Simple interest formula:
where
I = interest
P = principal
r = rate
t = time
In your case,
P = $4,000
I = $4,920 - $4,000 = $920
t = 2 years
So,
The rate as decimal is 0.115 that is 11.5% as percent
The number of bracelets that can be made through the number of beads that Winona purchased can be determined by dividing the number of beads by the number needed for each of the bracelets.
n = 2140 / 7
n = 305.7
Answer: 305 bracelets
Answer:
9 units
Step-by-step explanation:
To find the distance between 2 points on a number line all you have to do is subtract one of the points from the other.
5-(-4)=9
