Gunpowder contains 65 % nitre, 15 % sulphur and the rest of it is charcoal. Find the amount of nitre, sulphur and charcoal in 8 kg of gun powder.​

1. are the triangles similar and if so why? what is the value of x? show your work.

Scores on a university exam are normally distributed with a mean of 78 and a standard deviation of 8. the professor teaching the class declares that a score of 70 or higher is required for a grade of at least “c.” using the 68-95-99.7 rule, what percentage of students failed to earn a grade of at least “c”?

What is the solution of the equation? 35√(x+2)3+3=27