Barbara is planning a party. she invited some school friends and 2 times as many friends from her swimming club as school friends. if a total of 21 friends came to her party, how many school friends did she invite

If a cafeteria serves pizza every 4th day, pasta every 3rd day, and mozzarella sticks every 6th day, when will all three options be served together?

Find the value of x so that f (x) = 13, given that f (x) = x-10.

To date, Ty has cumulative earnings of $107,600. This week he is paid $3,000. What's the total amount of social security tax for this week? Assume a rate of 6.2% on $110,100 for social security and 1.45% for Medicare. A. $186.00 B. $155.00 C. $180.

What is the probability of rolling a number that is divisible by 2 on a six sided die?

Iven that, in a certain school, the following are true, what is the probability that a student is taking both math and computer science? 1. The probability that a student is taking math is 23%. 2.

The perimeter of a rectangle garden is 100 Ft the length of the garden is 5 feet longer than two times the width what is the area of the garden

Determinati numarul b astfel incat : (4x8) ^15 : 4^5:2^6=2^b si 3^4x3^5x3^17=3^b

1/x=6/x+15, 20-x/x=6/4, and 4/12=x+2/2x+13

If a sample of 26 students is taken from a population of 135 students, the population variance, o?, is the variance of how many students' heights? O A. Neither 26 nor 135 B. Both 26 and 135 O c. 135 O D. 26

Robert collected 330 aluminum cans. If 100 aluminum cans weigh 4 pounds, and the recycling center is paying 25 cents a pound, how much will Robert be paid for his 330 cans?