14 A scientist measured the wavelength of an X-ray as 0.0000000065 meters.
Write the number in scientific notation.

Select true or false to tell whether the following conditional p q is true or false. use the truth table if needed. if a week has seven days, then a year has twenty months.

An angle that measures between 90 and 180° is called a(,

Solve 30% of what = 60 step by step