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aniked [119]
3 years ago
13

Using the quadratic formula to solve x2 + 20 = 2x, what are the values of x?

Mathematics
2 answers:
BabaBlast [244]3 years ago
8 0

Answer:

Step-by-step explanation:

x^2+20=2x move 2x to the left

x^2-2x+20=0

Quadratic formula =

x=1± i√19

andrezito [222]3 years ago
5 0

Answer:

It is D on ed2020

1+-\sqrt 19 i

Step-by-step explanation:

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What is the recursive rule for the sequence 2, -1, 1/2 , -1/4
Helga [31]

Answer:

a_n=\frac{-1}{2}a_{n-1}

a_1=2

Step-by-step explanation:

The recursive rule is a term defined in terms of other terms in the sequence.

The is a geometric sequence because it has a common ratio.

The common ratio can be found by dividing a term by previous term.

For example, all of these are equal:

\frac{-1}{2}

\frac{\frac{1}{2}}{-1}

\frac{\frac{-1}{4}}{\frac{1}{2}}

They are all equal to \frac{-1}{2}.

So we are saying:

\frac{\text{term}}{\text{previous term}}}=\frac{-1}{2}

More formally:

\frac{a_n}{a_{n-1}}=\frac{-1}{2}.

Multiply both sides by a_{n-1}:

a_n=\frac{-1}{2}a_{n-1}

When doing recursive form, you need to state a term of the sequence (or more depending on the recursive form you have).

So the first term is 2.

So the full thing for the answer is:

a_n=\frac{-1}{2}a_{n-1}

a_1=2

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3 years ago
What are the basics for triganometrey
zheka24 [161]
Whiteboard full of trigonometric facts that you need to know...

4 0
3 years ago
PLZ HELP!!
White raven [17]

Answer:

The probablity is 11

Step-by-step explanation:

I am sure it's 11

Hope this answer helps you :)

Have a great day

Mark brainliest

7 0
2 years ago
In mon, j, k, and l are midpoints. if jl = 11, lk = 13, and on = 20, and jl || mn, lk || mo, and jk || on, what is the length of
frez [133]
This is just about similar triangle
mn=2jl=22
mo=2lk=26
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3 years ago
If anyone could help that would be greatly appreciated!
Serggg [28]

B. rational means it does not go on forever.

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