If I was 2 years old, and my sister was half my age. How old would my sister be?

Twenty-five lamps are placed around a circle-shaped garden. How many straight lines could be found if each lamp is connected to all the rest?

Yesterday, Bethany sent 60 messages. She said that 15% of those messages were to her best friend. How many text messages did Bethany send to her friend yesterday

List from least to greatest 4.1, 0.25, 0.042, 2.21

A 3.8 kg object is lifted 12 meters. Approximately how much work is performed during the lifting? A. 45.6 J B. 372.4 J C. 588 J D. 446.9 J

What is the inequality symbol for 9.6 and square root of 96

25 is on sale for 30% off. What is the sale price

5x+3y=4 Y=-3x how do i do this?

Express 41-4 as a mixed number

A certain disease has an incidence rate of 0.2%. If the false negative rate is 8% and the false positive rate is 4%, compute the probability that a person who tests positive actually has the disease.

How many 4-element subsets containing the letter a can be formed from the set {a, b, c, d, e, f, g}?