Answer:
10 ft
Step-by-step explanation:
Answer:
1. x = -5 + 5y
2. x = -5 - y/2
Step-by-step explanation:
Answer:
8mph
Step-by-step explanation:
when dina arrived to 20 masha was at 16. so the relation is 20/16 and if dina's speed was 10 your formula is 10/x=20/16 that means x/10=16/20. so x will be 8
Answer:
D
Step-by-step explanation:
Its D because A is all 90 degrees
Not C because all 90
Answer:
![-4 \le x \le 5](https://tex.z-dn.net/?f=-4%20%5Cle%20x%20%5Cle%205)
Note: to write the domain in interval notation, you'd write [-4,5]
if you need the domain in set-builder notation, then you'd write
![\left\{x|x\in\mathbb{R}, \ -4\le x\le 5\right\}](https://tex.z-dn.net/?f=%5Cleft%5C%7Bx%7Cx%5Cin%5Cmathbb%7BR%7D%2C%20%5C%20-4%5Cle%20x%5Cle%205%5Cright%5C%7D)
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Explanation:
The domain is the set of possible x input values. Look at the left most point (-4,-1). The x coordinate here is x = -4. This is the smallest x value allowed. The largest x value allowed is x = 5 for similar reasons, but on the other side of the graph.
So that's how I got
![-4 \le x \le 5](https://tex.z-dn.net/?f=-4%20%5Cle%20x%20%5Cle%205)
(x is between -4 and 5; inclusive of both endpoints)
Writing [-4,5] for interval notation tells us that we have an interval from -4 to 5 and we include both endpoints. The square brackets mean "include endpoint"
Writing
![\left\{x|x\in\mathbb{R}, \ -4\le x\le 5\right\}](https://tex.z-dn.net/?f=%5Cleft%5C%7Bx%7Cx%5Cin%5Cmathbb%7BR%7D%2C%20%5C%20-4%5Cle%20x%5Cle%205%5Cright%5C%7D)
is the set-builder notation way of expressing the domain. The
![x\in\mathbb{R}](https://tex.z-dn.net/?f=x%5Cin%5Cmathbb%7BR%7D)
portion means "x is a real number"