Because from air to water the item will go towards the normal and in water to air the item will gi away from the normal. So if it is already directly along the normal then it wont be refracted.
It is the intercept: the value that y takes when x = 0
15 percent 0 equals 0; 0 percent 15 equals 0. Both the above are true
To make 0 0 0 equal 8, place one zero on top of another zero and remove the last zero!
yes
The sum of 7.90 and 60 is 67.90. To add these two numbers, you align the decimal points and add the digits in each place value column, starting from the right. In this case, 0 + 0 in the tenths place equals 0, 9 + 6 in the ones place equals 15 (write down 5, carry over 1), 7 + 0 in the tens place equals 7, and finally add the carried over 1 to get the final sum of 67.90.
0
maybe
0
It equals 0.
It equals 0
0 it equals 0
x=0