AzizHusain

sqrt(10) /2 is not rational because sqrt(10) is irrational.

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1,760 yards = 1 mile.

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Do you mean like:

Given ratios of 5:8, 6:7, etc. --> 5/8, 6/7???

Let's use x and y for the two numbers and set up equations:

x*y = -1040

x + y = 14

x + y = 14

y = 14 - x

Let's substitute that into the first equation

x*(14 - x) = -1040.

14x - x^2 = -1040.

Move over everything to the write to get:

x^2 - 14x - 1040 = 0.

Now, let's use the quadratic formula to solve this:

You need to square root both sides.

x = sqrt(484)

x = 22.

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Just use % --> Shift + "5" on the top row of the keyboard labeled 1- 0.

b = 30 - 5m

Yes, you would end up with x = -10/18.