Answer:
81%
Step-by-step explanation:
![82/100.9=0.81\\0.81*100=81%](https://tex.z-dn.net/?f=82%2F100.9%3D0.81%5C%5C0.81%2A100%3D81%25)
Answer:
Hey there !
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The equation to find Amy's earning after tutoring for 15 hours is 300 dollars.
<h3>How to find an equation?</h3>
She earn 20 dollars for each hours she tutors.
E = earnings in dollars
H = hours of tutoring
The equation relating E and H are as follows:
E = 20H
Therefore, the equation to find Amy's earning after tutoring for 15 hours is as follows;
E = 20H
E = 20 × 15
E = 300 dollars
Therefore, Amy's tutoring for 15 hours is 300 dollars.
learn more on expression here: brainly.com/question/14492671
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Answer:
E is not a subspace of ![\mathbb{R}^2](https://tex.z-dn.net/?f=%5Cmathbb%7BR%7D%5E2)
Step-by-step explanation:
E is not a subspace of
In order to see this, we must find two points (a,b), (c,d) in E such that (a,b) + (c,d) is not in E.
Consider
(a,b) = (1,1)
(c,d) = (-1,-1)
It is easy to see that both (a,b) and (c,d) are in E since 1*1>0 and (1-)*(-1)>0.
But (a,b) + (c,d) = (1-1, 1-1) = (0,0)
and (0,0) is not in E.
By the way, it can be proved that in any vector space all sub spaces must have the vector zero.
Answer:
<h2>[-4, 6)</h2>
Step-by-step explanation:
![f(x)=\left\{\begin{array}{ccc}x+4&if&-4\leq x](https://tex.z-dn.net/?f=f%28x%29%3D%5Cleft%5C%7B%5Cbegin%7Barray%7D%7Bccc%7Dx%2B4%26if%26-4%5Cleq%20x%3C3%5C%5C2x-1%26if%263%5Cleq%20x%3C6%5Cend%7Barray%7D%5Cright%5C%5C%5C%5C%5Ctext%7BThe%20domain%20of%20a%20function%20is%20a%20set%20of%20x%27s%7D.%5C%5C%5C%5C%5Ctext%7BWe%20have%7D%5C%5C%5C%5C-4%5Cleq%20x%3C3%5Cto%20x%5Cin%5B-4%2C%5C%203%29%5C%5C3%5Cleq%20x%3C6%5Cto%20x%5Cin%5B3%2C%5C%206%29%5C%5C%5C%5C%5Ctext%7BThe%20domain%3A%7D%5C%20%5B-4%2C%5C%203%29%5C%20%5Ccup%5C%20%5B3%2C%5C%206%29%3D%5B-4%2C%5C%206%29)