In the middle school band, the ratio of students who play brass to students who were lay percussion is 5 to 2. which of the following could be the number of students in the band and the number of students who play brass?
a. 42 band members, 21 brass
b. 35 band members, 25 brass
c. 25 band members, 10 brass
d. 21 band members, 6 brass
explain how to give the answer also

Find the value of tan theta if sin theta = 12/13 and theta is in quadrant 2

The weights of players in a basketball league are distributed normally. the distance (d) of each player's weight (w) from the mean of 86 kilograms was computed as follows: d = |w - 86| if d is greater than 7 for approximately 5% of the players, what is the approximate standard deviation of the players' weights? a. 1.75 kilograms b. 3.5 kilograms c. 4.3 kilograms d. 7 kilograms

Ariana starts with 100 milligrams of a radioactive substance. the amount of the substance decreases by 20% each week for a number of weeks, w. the expression 100(1−0.2)w finds the amount of radioactive substance remaining after w weeks. which statement about this expression is true? a) it is the difference between the initial amount and the percent decrease. b) it is the difference between the initial amount and the decay factor after w weeks. c) it is the initial amount raised to the decay factor after w weeks. d) it is the product of the initial amount and the decay factor after w weeks.