Silvia is n years old. She has a twin sister. What is the total of their ages?

If a person starts investing $100 per month starting at age 21, and that money earns a 5% return every year, how much will this person have when turning 70 years old?

Simutaneous equation by substitution:y+2x=0,4x+y=3 ... solve for x and y

What Is 18/11 As A Decimal?

What's the exponent form for 10 times 10

How many liters of a 65% alcohol solution must be added to 30 L of a 25% alcohol solution to produce a 40% alcohol solution

Deductive reasoning involves developing a general rule from specific situations True or False

How many cups is in 1 1/3 plus 3/4

the scale of a map is 0.5 inch : 40 miles. On the map, the distance between 2 cities is 5 inches. What is the actual distance between the two cities?

If the ratio of a circles sector to its total area is 5/16 what is the measure of its sectors arc?

Out of the last 50 guest, only 1 of them brought a coupon for free admission to the carnival. If there are 1500 guests expected this weekend, how many can we except will receive free admission