3x - 5y = 7

2x + 5y = 13

Suppose that each of 200 students in a class selects a sample of size 500, and constructs a 95% confidence interval for the population proportion based on their sample.

Kris has two choices for a part-time job after school. Kris could make $10 per hour entering data for a local company, but none of his friends work there.

Find one multiple less than 100 and one multiple greater than 100 that has 3, 11, and 22 as factors

The distance from Earth to the Moon is about 384.400 km. How many light-years

Which expression is equivalent to (xy) z

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?

A single box of thumb tacks weighed 3 1/2 ounces. If a teacher had 4 1/7 boxes, how much would their combined weight be