It’s hard to see the image
Using the Pythagorean theorem:
6^2 + X^2 = 14^2
36 + x^2 = 196
X^2 = 196-36
x^2 = 160
x = SQRT(160)
x = 4 SQRT(10)
Or as a decimal:
x = 12.65 inches
The first one is a triangle because: The two smaller sides of a triangle must add up to be larger than the longest side.
14 + 12 = 26 > 19
Word form-five hundred six thousand,seven hundred nine
Expanded form-500,000+6,000+700+9
The interest is simple
A=5,200×(1+0.04×5)
A=6,240