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snow_tiger [21]
3 years ago
13

What does it mean when the point on a number line is open?

Mathematics
1 answer:
Aleks [24]3 years ago
3 0
It means that value is not counted. it’s there but you don’t include it
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What is the domain and range of y=x^2?
r-ruslan [8.4K]
Hi there! the best way of solving this is picturing out what the graph might look like. Let's assume you had the graph of a parabola y=x^2. You know that for every x you substitute, there'd always be a value for y. Thus, the domain is ALL REAL NUMBERS or from -INFINITY to + INFINITY. The range on the other hand is different. We know that any number raised to the second power will always yield a positive integer or 0. Thus, y=x^2 won't have any negative y-values as the graph opens upward. Therefore, the range is: ALL REAL NUMBERS GREATER THAN OR EQUAL TO 0. or simply: 0 to +INFINITY. 

<span>On the other hand, a cubic function y=x^3 is quite different from the parabola. For any x that we plug in to the function, we'd always get a value for y, thus there are no restrictions. And the domain is ALL REAL NUMBERS or from -INFINITY to + INFINITY. For the y-values, the case would be quite similar but different to that of the y=x^2. Since a negative number raised to the third power gives us negative values, then the graph would cover positive and negative values for y. Thus, the range is ALL REAL NUMBERS or from -INFINITY to + INFINITY. Good luck!!!:D</span>
3 0
3 years ago
Read 2 more answers
HELP AGAIN PLSS I WILL MARK YOU BRAINLIEST!​
notsponge [240]

Answer:

132

Total Area = Area of top rectangle+Area of trapezoid w/ bases 7 and 19

= base*height+(average of bases)(height of trapezoid)

= 7*4+8*(7+19)/2

= 28+104

= 132

5 0
3 years ago
16−(7m+3)=8(1−m)<br><br> what is m
Ivan

Answer:

m = -5

Step-by-step explanation:

16−(7m+3)=8(1−m)

16 - 7m - 3 = 8 - 8m

16 - 3 - 8 = 7m - 8m

5 = -m

(-1) * 5 = -m * (-1)

-5 = m

therefore, m = -5

8 0
2 years ago
The answer to this problem
katovenus [111]
D.) 2cm, 12cm, 16cm
'cause the sum of two small sides must be greater than that of longest side.

Hope this helps!
5 0
3 years ago
The area of a rectangle is 36 square meters. If the length of the rectangle is 3, what is the width?
bekas [8.4K]
Area = length x width

So, 36/3 = 12

Width is 12
8 0
3 years ago
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