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3 years ago

Which two values of x are roots of the polynomial below? 5x2 - 5x+1

Mathematics

1 answer:

Natalija [7]3 years ago

6 0

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$5 {x}^{2} - 5x + 1 = 0$

$(x - \frac{5 + \sqrt{5} }{10} )(x - \frac{5 - \sqrt{5} }{10} ) = 0 \\$

Thus :

$x = \frac{5 + \sqrt{5} }{10} \\$

$x = \frac{5 - \sqrt{5} }{10} \\$

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Plz help its so confusing

aleksklad [387]

Answer:

20, 4

Step-by-step explanation:

Let's assume total number of students registered is n

Last week n/4 people are absent

so people present are n - n/4 = 3n/4

Today after return of Jen 1/5 n are absent

so people present are n - n/5 = 4n/5

which is also equal to last week present people + 1 (Jen)

= 3n/4 + 1

= (3n + 4) / 4

so (3n + 4) / 4 = 4n/5

=> 3n + 4 = 4n/5 * 4

=> (3n + 4) * 5 = 16n

=> 15n + 20 = 16n

=> 20 = n

=> n = 20

So total students registered for class is 20

today no of people absent = n/5 = 20/5 = 4

8 0

2 years ago

N || 0, and m A) 47° B) 133° C) 180° D) 227° E) 313°

Dvinal [7]

Answer:

180

Step-by-step explanation:

im sure that is 180 so if you did not believe me solve that and be ready for your task and your brain

3 0

2 years ago

What is 710,200 written in word form

Julli [10]

For this case we have the following number:
710200
We are going to decompose this number as the sum of three numbers:
 $710200 = 700000 + 10000 + 200
$
 Let's now write each number:
70000: seven hundred thousand
10000: ten thousand
200: two hundred
Therefore, the complete expression is:
Seven hundred ten thousand two hundred
Answer:
Seven hundred ten thousand two hundred

8 0

3 years ago

If a puppet requires 3/4 yard of material, how many puppets can be made from 9 yards of material?

klasskru [66]

First find out how many times 3/4 yard goes into 9. 3/4 fits into 9 twelve times, so twelve puppets can be made.

Did I help? Thank me by clicking best answer!

5 0

3 years ago

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What's 76×32÷5+(19×92)-15×2? Need help ASAP

arsen [322]

Answer:

2204.4

Step-by-step explanation:

Okay so we want to always use order of operations: PEMDAS

Sop first we do what is in the parenthesis. 19*92 is 1748.

Now, going from left to right, we do multiplication and division. 76*32 is 2432. Then we divide that by 5 to get 486.4. And the last bit is 15*2 which is 30.

Your equation now is 486.4+1748-30.

The final answer is 2204.4

6 0

3 years ago

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