What is the answer to 64 + (-15) + (-5)

Find the missing value to the nearest hundredth. tan __ =.87

The distribution of vitamin C amount in vitamin drops produced by a given factory is approximately Normal, with a mean of 60.0 mg and a standard deviation of 0.5 mg. About 80% of vitamin drops contain more than A 59.36 mg of vitamin C. B 59.

The total number of seats in an auditorium is modeled by f (x) = 2x² - 12x, where x represents the number of rows of seats. How many rows are there in the auditorium if it has a total of 320 seats? Show work and explain how you got your answer

What is the radius of the following circle? (x+5) 2 + (y-10) 2=121

What's the u known 6/12=x/2

2.65 Consider the situation of Exercise 2.64. Let A be the event that the component fails a particular test and B be the event that the component displays strain but does not actually fail. Event A occurs with probability 0.

There are six rows of 18 chairs and in the middle of four rows of six chairs are brown how many are not brown

The equation a=180 (n-2) / n represent the angle measures, a in a regular n-sided polygon. When the equation is Solved for n, n is equal to a fraction with a denominator of a-180. What is the numerator of the fraction.

What is the unit rate of $120 15 books

Ana lee has 30 gum balls. If one sixth are green, and one third are red, are there E more red gum ball was or green gum balls? HHow do u know?