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kupik [55]
3 years ago
9

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

Mathematics
1 answer:
Marina86 [1]3 years ago
4 0

Answer:

x=1+i√19,1-i√19

Step-by-step explanation:

Write the problem as a mathematical expression.

Subtract from both sides of the equation.

Use the quadratic formula to find the solutions.

Substitute the values, and into the quadratic formula and Simplify.

Simplify the numerator. Multiply by Simplify

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2x – 4 = 6<br> The answer is 10, but I just need a step by step explanation for this
vazorg [7]

Answer:

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Step-by-step explanation:

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3 years ago
Identify the maximum or minimum value, domain, and range of the graph of the quadratic function.
Virty [35]

Answer:

See below ~

Step-by-step explanation:

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5 0
2 years ago
The price of a flight was increased by 3% to £650. What was the price before the increase?
liubo4ka [24]

Answer:

£ 631

Step-by-step explanation:

Hi this is a simple mathematics issue.

First, let's imagine what is 3%. '3 percents' means 3/100. If your family have 100 apples and you have 3 apples, that means you have 3% of your family apples.

Now, get back to this problem. We need to find the price before increase. Let's say the price was £ X. Now we will find the X number.

It's said that the price was increased by 3%. That means they took 3% of X and added that amount to X to have the new price : £ 650. That means we have this equation :

650 = X + 3%×X

Let's make it easier to look :

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650 = X×( 1+ 3/100)

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So we can see 650 is equaled to X multipled by 103/100.

To find the correct answer, simply divide 650 by 103/100.

*A hint: When you divide a number by a fraction, you can simply put the number multiplied by the "flipped" fraction .

Hope you learn with Joy and High Grades !!!

8 0
3 years ago
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