The diagram shows a solid prism made from metal. The cross-section of the prism is a trapezium.
The parallel sides of the trapezium are 8 cm and 12 cm.
The height of the trapezium is 6 cm.
The length of the prism is 20 cm.
The density of the metal is 5 g/cm'.
Calculate the mass of the prism.
Give your answer in kilograms.

Solve each quadratic equation by factoring and using the zero product property. x^2 + 18x = 9x

Which of the following is the best first step in solving the equation below? 4+2㏒³x=17

Using pert, adam munson was able to determine that the expected project completion time for the construction of a pleasure yacht is 21 months, and the project variance is 4. a) what is the probability that the project will be completed in 17 months? b) what is the probability that the project will be completed in 20 months? c) what is the probability that the project will be completed in 23 months? d) what is the probability that the project will be completed in 25 months? e) what is the due date that yields a 95% chance of completion?