Solve 0+x^2-10x+30 by completing the square

See answer below

Step-by-step explanation:

x² - 10x + 30 = 0

x² - 10x = -30

x² - 10x + 25 = -30 +25     1/2 of the x term and square that number and add to

                                          both side.

x² -10x + 25 = -5

(x - 5)(x - 5) = -5

=    

If you are in Algebra II , then the answer is not a real answer it will be

(x - 5)² = ±5i

the ratio of white tiles to blue tiles is 48: 16. the ratio in it's simplest form is 3: 1.

step-by-step explanation:

ratio: take the first number and add a colon next to it, then add the second number after that. make sure the ratio order matches up with the written problem!

simplest form: we can simplify the ratio 48 : 16 by dividing both terms by the greatest common factor (gcf).

the gcf of 48 and 16 is 16.

divide both terms by 16:

48 ÷ 16 = 3

16 ÷ 16 = 1

reducing to simplest form:

48 : 16 = 3 : 1