after spending 80% of gulnaza's money. she left with rupees 800. How much did she have in the beginning ?

Before simplifying, how many terms are there in the expression 2x - 5y + 3 + x?

School has 204 sixth grade students. if the sixth grade is 30% of the total school, how many students are in the middle school?

What is the volume of the cone to the nearest cubic millimeter? (use π  = 3.14) a) 46 mm3 b) 128 mm3 c) 183 mm3 d) 275 mm3 diameter = 5 mm height = 7 mm how do you do this problem step by step?