The maximum recommended pulse rate R, when exercising .for a person who is x years of age is given by the equation R = 176 - 0.8 x . what is the age, in years , of a person whose maximum recommended pulse rate when exercising is 140?

For what value of x between -4 and 4, inclusive ,is the value of x2 -10x + 16 the greatest?

what is the value of

A boy was asked to multply a number by 7/8 instead he divided the number by 7/8 and got the result 15/14 more...

The average age of a group of 10 students is 15 years . when 5 more students joined the group , the average ag...

3 men or 5 women or 8 boys can finish a work in 38 days. How many days will be required to complete the same w...

If the perimeter of a rectangular garden plot is 34 feet and its area is 60 square feet, what is the length of...