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gavmur [86]
4 years ago
11

Find the value of c that completes the square. a2 + 12a + c

Mathematics
1 answer:
melisa1 [442]4 years ago
5 0

Answer:

c = 36

Step-by-step explanation:

Given

a² + 12a + c

To complete the square

add ( half the coefficient of the a- term )² to a² + 12a

a² + 2(6)a + 6²

= (a + 6)² + 36

Hence the value of c = 36

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den301095 [7]

Answer:

This is an isosceles triangle.

So, we have:

Tangent 32 = x/11

Tangent 32 (11) = x

x = 6.874

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8 0
3 years ago
True or false this number is written in scientific notation? <br> .2486 x 10^12
Scilla [17]

Answer:

<h2>It Is True </h2>

It is true because scientific notation is a way of writing very large or very small numbers. A number is written in scientific notation when a number between 1 and 10 is multiplied by a power of 10. For example, 650,000,000 can be written in scientific notation as 6.5 ✕ 10^8.

8 0
3 years ago
Which fraction is equivalent to a repeating decimal?
Brilliant_brown [7]

what are the fractions?

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8 0
3 years ago
What is the circumference of the circle in terms of pi? The radius is 2.2
klemol [59]
We will use formula for circumference of circle:
lets name it as O

O = 2*r * pi

when we express r in this formula we get:

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6 0
3 years ago
Read 2 more answers
Suppose the Tower of Hanoi rules are changed so that stones may only be transferred to an adjacent clearing in one move. Let In
Svet_ta [14]

Answer:

l_n=3^n-1

Step-by-step explanation:

We will prove by mathematical induction that, for every natural n,  

l_n=3^n-1

We will prove our base case (when n=1) to be true:

Base case:

As stated in the qustion, l_1=2=3^1-1

Inductive hypothesis:  

Given a natural n,  

l_n=3^n-1

Now, we will assume the inductive hypothesis and then use this assumption, involving n, to prove the statement for n + 1.

Inductive step:

Let´s analyze the problem with n+1 stones. In order to move the n+1 stones from A to C we have to:

  1. Move the first n stones from A to C (l_n moves).
  2. Move the biggest stone from A to B (1 move).
  3. Move the first n stones from C to A (l_n moves).
  4. Move the biggest stone from B to C (1 move).
  5. Move the first n stones from A to C (l_n moves).

Then,

l_{n+1}=3l_n+2.

Therefore, using the inductive hypothesis,

l_{n+1}=3l_n+2=3(3^n-1)+2=3^{n+1}-3+2=3^{n+1}-1

With this we have proved our statement to be true for n+1.    

In conlusion, for every natural n,

l_n=3^n-1

8 0
3 years ago
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