3 years ago

An element a basic substance that can’t be

Mathematics

1 answer:

Reil [10]3 years ago

4 0

Answer:

Simplified

Step-by-step explanation:

Examples can be hydrogen, oxygen, gold

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I need to evaluate h(3)

Natali5045456 [20]

Answer:

h(3) = - 1

Step-by-step explanation:

To evaluate h(3), that is x = 3 in the interval x ≥ 1 , then

h(x) = - x + 2 , thus

h(3) = - 3 + 2 = - 1

Then h(3) = - 1

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3 years ago

Can someone please answer. There is one problem. There's a picture thank you!

IceJOKER [234]

If you take two letters at a time, you treat them as one, so it's like you have 5 letters in total.

$5!=120$

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4 years ago

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egoroff_w [7]

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10...?

Step-by-step explanation:

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3 years ago

Solving quadratic equations with complex solutions x2 + 4x + 8 = 0.

Daniel [21]

Answer:

$\large\boxed{x=-2\pm2i}$

Step-by-step explanation:

$x^2+4x+8=0\qquad\text{subtract 8 from both sides}\\\\x^2+4x+8-8=0-8\\\\x^2+2(x)(2)=-8\qquad\text{add}\ 2^2\ \text{to both sides}\\\\x^2+2(x)(2)+2^2=-8+2^2\qquad\text{use}\ (a+b)^2=a^2+2ab+b^2\\\\(x+2)^2=-8+4\\\\(x+2)^2=-4\iff x+2=\pm\sqrt{-4}\\\\x+2=\pm\sqrt{(4)(-1)}\qquad\text{use}\ \sqrt{ab}=\sqrt{a}\cdot\sqrt{b}\\\\x+2=\pm\sqrt4\cdot\sqrt{-1}\qquad\text{use}\ \sqrt{-1}=i\\\\x+2=\pm2\cdot i\qquad\text{subtract 2 from both sides}\\\\x=-2\pm2i$

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3 years ago

Need help please. Kind of confused

muminat

What you do is look at the graph and whatever that line is on then that will be your answer.

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3 years ago

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