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daser333 [38]
3 years ago
7

Use mathematical induction to prove that the statement is true for every positive integer n.

Mathematics
1 answer:
Mice21 [21]3 years ago
7 0

Induction on n

Base case: n = 0

the left side is 0, and the right side is 0, so the equality holds.

Now, suppose that is true for n, and you need to show that the equality holds for n+1

So, write the left side

8 + 16 +24 + ... + 8n + 8(n+1) (*)

By hypothesis, 8+16+24+ ...+ 8n = 4n(n+1)

so, in (*) we have

4n(n+1) +8(n+1) = (4n+8)(n+1) = 4(n+2)(n+1) = 4(n+1)(n+2). So, this is true for every natural number n.


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Akimi4 [234]

Answer:

now i dont know if this is the thing your asking but a negative plus a negative is a positive.

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3 years ago
Steel is formed by combining masses of carbon and iron in the ratio 1:49. How many pounds of iron would it take to create 10 pou
Sergeu [11.5K]

Answer:

9.8

Step-by-step explanation:

1:49= ratio of carbon to to iron

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50=10pounds

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4 0
3 years ago
If <br> B is the midpoint of AC, AB=x+6 and AC=5x-6, then what is BC?
nikklg [1K]

If B is the midpoint of AC, then AB=BC. It is also BC=AC-AB

AB = x + 6

AC = 5x - 6

BC = (5x - 6) - (x + 6)

We can kinda use distributive property, like this:

BC = 5x - 6 -x - 6

Combine like terms:

BC = 4x - 12

To verify, we can add AB and BC to see if their sum is equal to AC.

(x + 6) + (4x - 12) = 5x - 6

If we are correct, this equation will be true.

x + 6 + 4x - 12 = 5x - 6

Combine like terms:

6 + 5x - 12 = 5x - 6

5x - 6 = 5x - 6

It's correct!

BC = 4x - 12. Final Answer.

Let me know if you have any questions about this! :)

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3 years ago
What is the value of the expression i0•i1•i2•i3•i4
My name is Ann [436]

\bf \stackrel{1}{i^0}\cdot \stackrel{i}{i^1}\cdot \stackrel{-1}{i^2}\cdot \stackrel{-i}{i^3}\cdot \stackrel{1}{i^4}\implies i\cdot i\cdot 1\implies i^2\implies -1

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A rectangle with an area of 103 square feet is dilated by a scale factor of 3. What is the new area?
nekit [7.7K]
Okay so a dilation means that you would multiply the area by your scale factor. 103 times 3 is 309. Your answer is 309
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