# Posts by elis

Total # Posts: 8

**Math**

The height of an isosceles triangle is 4 cm. Each of the two equal sides measure 5 cm. What is the area of the triangle?

**Math**

A watch loses 30 second hour. If the watch was set right on Sunday at 11:30 p.m. What day and time did it show after 10 hours?

**Math**

rectangular water tank whose base is 1.5 m by 0.5 m is to be filled with water 50 litre containers. How many such containers will be required to fill the tank to a height of 1 meter?

**Math**

A farmer harvested 144 bags of maize in one season. In the second season the yield increased in the ratio 4:3. The farmer supplied all the bags of maize harvested in the second season equally to three millers. How many bags of maize did each miller get?

**chem**

a mixture of NaBr & NaCl has a mass of 2g & found to contain 0.75g of Na. What is the mass of NaBr in the mixture?

**math**

differentiate y=(x)^(1/2)e^(-x).i need the calculation work. [ans: -x^(1/2)e^(-x) + 1/2(x^-1/2)e^(-x)]

**math**

differentiate y=-4x^2cos x. i need to know the calculation work. (ans: 4x^2sinx - 8xcosx)

**phy**

You pull upward on a stuffed suitcase with a force of 150 N, and it accelerates upward at 0.760 m/s^2. 1-What is the mass of the suitcase? 2-What is the weight of the suitcase?