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Gwar [14]
2 years ago
10

Prove that, for all positive values of n,

Mathematics
2 answers:
alekssr [168]2 years ago
7 0

\frac{(2n+3)^{2}-(2n+1)^{2}}{6n+6} \\ \\ =\frac{(4n^{2}+12n+9)-(4n^{2}+4n+1)}{6n+6} \\ \\ =\frac{4n^{2}+12n+9-4n^{2}-4n-1}{6n+6} \\ \\ =\frac{8n+8}{6n+6} \\ \\ =\frac{4(2n+2)}{3(2n+2)} \\ \\ =\frac{4}{3} \\ \\ \therefore \boxed{a=4, b=3}

max2010maxim [7]2 years ago
5 0

Answer:

vos te burlabas de mi

vos estás desgastado como un criminal sacado

exceso de flow

no se que será

que les paso?

sintieron un golpe en la nuca? ese fui yo..

siente tengo el estilo

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Read 2 more answers
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bekas [8.4K]

Answer:

a. $45 an hour

b. 5.25 hours

Step-by-step explanation:

a. The plumber charges $75 per job, so it is irrelevant to the number of hours they work. 45(h) is $45 multiplied by the number of hours they work.

b.

First, plug the numbers into the equation, the cost being C(h):

311.25 = 45(h) + 75

Next, subtract $75 as it is a set price that is always payed:

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Then, divide both sides by 45 to find how many hours were worked:

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5 0
2 years ago
Given that sin(30)=1/2 and cos(30)=(sqrt3)/2, use trigonometric identities to find the value of cot(30)
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3 years ago
For the equation y+1=-3(x-5) the line contains the point (5,-1) and has a slope of?
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Answer:

-3

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5 0
2 years ago
A shopper purchased 4 tables and 2 chairs for $200 and 2 tables and 7 chairs for $400. What is the cost of each table and each c
I am Lyosha [343]
4t+2c=200
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I will solve for c in terms of t first
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Then I will substitute this in for c in the second equation to make it single variable
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Plug t back into one of the ORIGINAL equations to find the cost of chairs
4(25)+2c=200
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c=50
Chairs cost $50 each

Hope this helps! :)


6 0
3 years ago
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