Sarah has a collection of nickels, dimes, and quarters worth $13.80. she has 10 more dimes than nickels and twice as many quarters as dimes. how many coins of each kind does she have?

Amy and her partners measured the pH of water samples from different ponds in her neighborhood. This data follows a normal distribution. What is the probability that the pH level of a specific pond was 2 or more standard deviations above the mean?

Decrease £16870 by 3% Give your answer rounded to 2 DP.

Factor 12x-54 using gcf

At a rate of 0.35 kilometers per minute how many kilometers will the cyclist travel in 15 minutes?

Is i have 5 red marbles, 2 green and 3 blue, what is the probability of drawing two blue marbles in a row?

Area of a rectangle 12 by 10

If OR is the angle bisector of POQ, and POQ = 94°, what is the measure of POR?

The mean temperature for the first 4 days in January was 7°C. The mean temperature for the first 5 days in January was 9°C. What was the temperature on the 5th day?

The taxi fare in gotham city is $2.40 for the first additional mileage charged at the rate $0.20 for each additional 0.1 mile. you plan to give the driver a $2 tip. how many miles can you ride for $10?

What is the expression for add g to 4, then subtract 5 from the result?