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kifflom [539]
3 years ago
6

1. t+7=5 step by step

Mathematics
1 answer:
nika2105 [10]3 years ago
5 0

Answer:

t=-2

Step-by-step explanation:

t+7=5

t+7-7=5-7

t=-2

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Each of the performers at a circus convention is either a unicyclist, a mime or an aerial artist. The ratio of unicyclists to mi
Alexeev081 [22]

Answer:

14.52% are unicyclists

Step-by-step explanation:

First, we can use proportions to find the number of unicyclists at the convention. Since we know that the ratio of unicyclists to aerial artists is 9:11, and there are 88 aerial artists, we can set up the following equation:

\frac{9}{11}=\frac{x}{88}

If we cross multiply, we get that 11x = (88)(9). After we divide through by 11 to isolate x, we get that x = (8)(9) = 72

Second, we have to figure out the number of mimes at the convention to figure out the total number of people there. We know that the ratio of unicyclists to mimes is 3:14, and the number of unicyclists is 72. So, we can set up the following proportion:

\frac{3}{14}=\frac{72}{y}

If we cross multiply, we get that 3y = 1008, or y = 336 mimes

The total number of people at the convention is 336 mimes + 72 unicyclists + 88 unicyclists = 496. Now we have to figure out what percent of 496 is 72 (the number of unicyclists). If we let z = the percentage, we can simply set up an equation that says that 72 is z% of 496:

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Prove algebraically that the sum of the squares of two consecutive intgers is always an odd number
musickatia [10]

Answer:

See below.

Step-by-step explanation:

Let's let our first integer be n.

Then, our second, consecutive integer must be (n+1).

We want to prove that the sum of the square of two consecutive integers is always odd.

So, let's square our two expressions and add them up:

(n)^2+(n+1)^2

Square. Use the perfect square trinomial pattern. So:

=n^2+(n^2+2n+1)

Combine like terms:

=2n^2+2n+1

Notice that the first term 2n² has a 2 in front. Anything multiplied by 2 is even. So, regardless of what integer n is, 2n² is <em>always</em> even.

Our second term 2n also has a 2 in front. So, whatever n is, 2n is also <em>always</em> even.

So far, 2n² and 2n are both even. Therefore, the sum of 2n² and 2n is <em>also </em>even.

Lastly, we have the constant term 1. It doesn't matter what n is, we know that (2n² + 2n) is definitely and is always even. So, if we add 1 to this, we will get an odd number.

Q.E.D.

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