2 years ago

How many different ways can you solve a quadratic equation ? List them.

1 answer:

6 0

There are three basic methods for solving quadratic equations: factoring, using the quadratic formula, and completing the square.

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Please Help this is the only one i dont know!!

Stella [2.4K]

Answer:

$\large\boxed{x=\dfrac{23}{33}}$

Step-by-step explanation:

$\text{Let}\ x=0.\overline{69}\\\\x=0.696969...\qquad\text{multiply both sides by 100}\\\\100x=69.696969...\qquad\text{subtract}\ x\ \text{from}\ 100x:\\\\100x-x=69.696969...-0.696969...\\\\99x=69\qquad\text{divide both sides by 99}\\\\x=\dfrac{69}{99}\\\\x=\dfrac{23}{33}$

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2 years ago

Please help me figure out the answer to this question and the processes well!

KonstantinChe [14]

Plug the x values into the equation.
For -3 the answer is -11 because 3(-3)-2 = -11
For 1 the answer is 1 because 3(1)-2 = 1
For 5 the answer is 13 because 3(5)-2 = 13
So your points will be (-3,-11), (1,1), and (5,13)

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2 years ago

What is the product of (3 the square root of 8)(4 the square root of 3)? Simplify your answer

Vsevolod [243]

$3\sqrt{8}\cdot4\sqrt{3} \\12\sqrt{24} \\12\cdot2\sqrt{6} \\\boxed{24\sqrt{6}}$

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2 years ago

Which of the following could be the lengths of the sides for a triangle that is

kotykmax [81]

Answer:

Step-by-step explanation: c

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2 years ago

(6.253•10^-2)(7.112x10^3) in scientific notation

zlopas [31]

Answer:

4.4471336 * 10^2.

Step-by-step explanation:

(6.253•10^-2)(7.112x10^3)

= 6.253*7.112 * 10^-2*10^3

= 44.471336 * 10^1

= 4.4471336 * 10^2.

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2 years ago