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Alex
3 years ago
9

Simplify the express (3x² – 2x – 1) – (3x² + 2x - 2)

Mathematics
1 answer:
ludmilkaskok [199]3 years ago
5 0

Answer:

-4x+1

Step-by-step explanation:

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The length of a leg of an isosceles right triangle is 20 inches. Find the length of the hypotenuse in radical form
Over [174]

Answer: H = 20\sqrt{2}

Step-by-step explanation:

To find the hypotenuse , we will use Pythagoras theorem, which states that

The square of the hypotenuse = the square of the adjacent + the square of the opposite.

Since , we are dealing with isosceles right triangle , this means that :

both the adjacent and the opposite are equal, using the formula to find the hypotenuse , let H represent the hypotenuse , then

H^{2} = 20^{2} +  20^{2}

H^{2} = 400 + 400

H^{2} = 800

Take the square root of both sides

H = \sqrt{800}

\sqrt{800} can be written as \sqrt{400} x\sqrt{2}

Therefore :

H = \sqrt{400} x\sqrt{2}

H = 20x \sqrt{2}

H = 20\sqrt{2}

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3 years ago
Find an expression for the nth term (tn) in each of the following sequence:
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Step-by-step explanation:

This is an arithmetic sequence. The expressive formula for an arithmetic sequence is aₙ = a₁ + (n-1)d, where a₁ is the first term and d is the common difference. In this case, a₁ = 12 and d = -1. We have aₙ = 12 + (n - 1) * (-1) = 12 - n + 1 = -n + 13. aₙ = -n + 13. Hope this helps!

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Which equation has the expression for x=4​
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C, because 4 + 8 is 12 and 3 multiplied by 4 is 12 so they agree with one another
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