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2 years ago

Anyone understand this? i need help :((

Mathematics

1 answer:

Zinaida [17]2 years ago

5 0

Answer:

(-9,8)

(-2,8)

(-1,8)

(0,8)

(7,8)

hope this helped you :)

Please mark me brainiest

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3 years ago

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Answer:

Step-by-step explanation:

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3 years ago

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timama [110]

Answer:

Step-by-step explanation:

The common ratio is 3, so multiply the numbers of the pattern by 3. So 1x3 is 3, 3x3 is 9, 9x3 is 27, 27x3 is 81, 81x3 is 243, and just continue until you're on the 7th number; 1 was the first, 3 was the second and 9 was the third.

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3 years ago

What are the solutions of the equation?

yKpoI14uk [10]

Answer:

Option (b) is correct.

The solution of the quadratic equation $x^2+4x=21$ is -7 and 3

Step-by-step explanation:

Consider the given quadratic equation $x^2+4x=21$

This can be rewritten as, $x^2+4x-21=0$

We can solve the quadratic equation using middle term splitting method,

4x can be written as 7x-3x , we get,

$\Rightarrow x^2+4x-21=0$

$\Rightarrow x^2+7x-3x-21=0$

Taking terms common, we get,

$\Rightarrow x(x+7)-3(x+7)=0$

Thus, $\Rightarrow (x-3)(x+7)=0$

Thus, we get (x-3)= 0 or (x+7)= 0

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Thus, the solution of the quadratic equation $x^2+4x=21$ is -7 and 3

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3 years ago