3 years ago

Use the value of the discriminant to determine the type of roots for x²-3x+1=0

Mathematics

1 answer:

nignag [31]3 years ago

7 0

Hi,

Δ = 9 - 4 * 1 * 1 = 5

the roots are :

x1 = (3 - √5) / 2

x2 = (3 + √5) / 2

You might be interested in

Last week at a festival, a man sold 4 times as many tie-dyed T-shirts as silk screened shirts. He sold 180 shirts altogether. Ho

lyudmila [28]

Let the number of tie-dyed T-shirts = x

The man sold 4 times as many tie-dyed T-shirts as silk-screened shirts.

So, the number of silk-screened shirts = 4x

He sold 180 shirts altogether

So,

$\begin{gathered} x+4x=180 \\ 5x=180 \\ \\ x=\frac{180}{5}=36 \end{gathered}$

So, the number of tie-dyed shirts = 36

7 0

11 months ago

Carlos wrote three numbers between 0.33 and 0.34 what numbers could Carlos have written?

sergij07 [2.7K]

the correct answer is:

Carlos could have written 0.333, 0.334, and 0.3335.

side notes:

hope this helps or is correct!

4 0

3 years ago

Solve for y: - √(y) = -5

Serggg [28]

-sqrt(y) = -5

Multiply each side by (-) negative sign: sqrt(y) = 5

Square each side: y = 25

Answer: (C) 25

3 0

3 years ago

How to rewrite 2+2+2+2+2 into a multiplication problem?

inna [77]

Answer:

2 x 5

Step-by-step explanation:

Think of it as "the value 2 is being added together 5 times" being added together so it could be written as 2 times 5.

5 0

3 years ago

Read 2 more answers

What is 7% tax on a $9.79 purchase

irga5000 [103]

All u do is put 9.79 multiplied by .07 and it gives you 0.6853 so its .68 or .69 cents if u round

6 0

3 years ago

Read 2 more answers