Henry is mixing concrete. To make a concrete he needs to mix cement, sand and gravel in the ratio of 4 to 3 to 1 by weight. Henry needs to make 120 kg of concrete he has 55 kg of cement 45 kg of sand and 15 kg of gravel which ingredients is Henry short of

The lengths of nails produced in a factory are normally distributed with a mean of 4.91 centimeters and a standard deviation of 0.05 centimeters. find the two lengths that separate the top 4% and the bottom 4%. these lengths could serve as limits used to identify which nails should be rejected. round your answer to the nearest hundredth, if necessary.

Ahighway between points a and b has been closed for repairs. an alternative route between there two locations is to travel between a and c and then from c to b what is the value of y and what is the total distance from a to c to b?

87.5% , 100% , 83.33 , 93.33% , 100% , 82.5% are all the academic points i've gotten this quarter. what's my final grade?