The formula for simple interest is ...
I = Prt
1800 = 11000*r*6
1800/66000 = r = 0.02727... (repeating 27)
The simple interest rate is approximately 2.73%.
Make use of the fact that side lengths in similar triangles are proportional.
.. 30/18 = (20 +x)/20
.. 20*(30/18) -20 = x . . . . multiply by 20, subtract 20
.. 33 1/3 -20 = x . . . . . . . . evaluate the product
.. 13 1/3 = x
= (-19)* pi / 6 * 180 / pi = -570 degrees
Answer:
Step-by-step explanation:
531.55 = 125% of x = 1.25x
x = 531.55/1.25 = 425.24
