A rational number is one that can be written as a fraction
with whole numbers on top and bottom, and that's exactly
how your number is written.
The answer is either undefined or “x does not exist in the set of all real numbers”.
Answer:
x = 2
Step-by-step explanation:
the formula for this problem is
Area = 1/2 base x Height
step 1) plug in what we know
5 = 1/2 base(5)
step 2) switch sides
1/2 base x 5 = 5
step 3) divide both sides by 1/2 x 5
= 
step 4) Simplify

step 5) Simplify

step 6) now you have gotten the answer<u> x = 2</u>
Substitute in what you already know into the formula, since the formula is (a=bh) you already know what A is so now you have 50=bh, now the length is x+7 , length is basically height , so h in the formula , so now you get 50=b(x+7) , now you need b luckily you already have b, so plug in 50=(x+2)(x+7) , you can guess and check or you can solve for x by double distributing