How many choices if 2 of the friends will only attend together?

Alex skateboarded 2 1/3 miles. Carla skateboarded 4 1/5 miles. How much farther did Carla board then Alex

Find the 100th term in the arithmetic sequence -19,-14,-9,-4,1 ...

ROB ran 286 miles in 2.5 months. LUKE ran 278 miles in 2 months. How much did Rob and Luke run a day? Who ran the most miles?

What is 78% of 60 46% of 70

Put this number in order from the largest 9.4,9.07,9.256

Write an equation with the solution x=20?

A sequence has a first term of 2 and a constant ratio of - 3/2 what are the first five terms of the sequence

A three-dice is a six sided dice with only the numbers 1, 2 and 3. The usual numbers 4, 5 and 6 are replaced by 1, 2 and 3 respectively. 4 three-dice (with sides labeled 1, 2, and 3) are rolled and the numbers face up on the 4 dice are recorded.

Judy is making scarves to give to her family as gifts. She needs to make 5 scarves and each scarf is 3.75 feet long. How many yards of fabric does Judy need to buy?

Find the margin of error for a 95% confidence interval for estimating the population mean when the sample standard deviation equals 100 , with a sample size of (i) 484 and (ii) 1764. What is the effect of the sample size?