2 years ago

Evaluate 7+ (-4x²) for x = 0. 1. 0 2. 3 3. 7 3. 23

Mathematics

1 answer:

Flauer [41]2 years ago

6 0

Answer:

substitute

7+( -4×0) = 7 + 0 = 7

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That would be

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3 years ago

Express the radical using the imaginary unit, i

Kipish [7]

Answer:

7i.

Step-by-step explanation:

Note : The given expression must be $\sqrt{-49}$ .

We have to write this radical value in the imaginary value.

The given value can be rewritten as

$\sqrt{-49}=\sqrt{49\times (-1)}$

$\sqrt{-49}=\sqrt{49}\times \sqrt{-1}$ $[\because \sqrt{ab}=\sqrt{a}\sqrt{b}]$

$\sqrt{-49}=7\times i$ $[\because \sqrt{-1}=i]$

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Therefore, the required expression is 7i.

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bulgar [2K]

Answer:

Step-by-step explanation:

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3 years ago

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How many solutions does the equation 3n + 5 (n-4) = 9n -5 have

Tju [1.3M]

$3n + 5(n - 4) = 9n - 5 \\ \\ 3n + 5n - 20 = 9n - 5 \\ \\ 8n - 20 = 9n - 5 \\ \\ 8n - 9n = - 5 + 20 \\ \\ - n = 15 \\ \\ n = - 15$

<h3>Hope This Helps</h3>

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2 years ago