What is the solution to (3×10)÷(4×199)

Need 50 will mark brainliest answer. find the lengths of all the sides and the measures of the angles.

Which radical expression is a rational number? a. √ 360 b. √ 644 c. √ 225 d. √ 122

The first week samantha learned to read braille, she could read 10 words per minute. in the second week she increased her speed by 20%. in the third week she increased her speed again by another 25%. how many words could she read per minute by the third week? hurry and tell me!