Give the domain and range. x –2 0 2 y –1 0 1 a. domain: {2, 0, 2}, range: {1, 0, 1} b. domain: {–2, 0, 2}, range: {–1, 0, 1} c.
weeeeeb [17]
Step-by-step explanation:
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Answer:
180-n_c
Step-by-step explanation:
Given that the ratio of children to adults is 2:1.
Let 
and 
be the number of children and adults in the school carnival.
So, 
Given that the total number of peoples in the carnival =180
So, 
Now, from equations (i) and (ii), we have
Hence, the number of children in attendance is 120.
Answer:
yessssss
Step-by-step explanation:
...........
Answer:
$400
Step-by-step explanation:
150 + 300 = 450
450 - 50 = 400
We will use demonstration of recurrences<span>1) for n=1, 10= 5*1(1+1)=5*2=10, it is just
2) assume that the equation </span>10 + 30 + 60 + ... + 10n = 5n(n + 1) is true, <span>for all positive integers n>=1
</span>3) let's show that the equation<span> is also true for n+1, n>=1
</span><span>10 + 30 + 60 + ... + 10(n+1) = 5(n+1)(n + 2)
</span>let be N=n+1, N is integer because of n+1, so we have
<span>10 + 30 + 60 + ... + 10N = 5N(N+1), it is true according 2)
</span>so the equation<span> is also true for n+1,
</span>finally, 10 + 30 + 60 + ... + 10n = 5n(n + 1) is always true for all positive integers n.
<span>
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