<span>180-90-50=40 degrees</span>
B. 16.30 = 16.3
if there is a 0 in a decimal and it is the farthest right place value it is the same as if the 0 wasn't there
Four? Isn't it stated in the question? Unless I am assuming wrong.
b is decreased by 25% which means there will be (-ve) sign.
<h3>So,</h3>

- <em>Option 5 is correct!!~</em>