Martha estimated there were 86 marbles in a jar for a contest. The actual number of marbles in the jar was 108. What was the percent error of Martha's estimation?

Built in a shape of a nonagon. Each side is 160 feet long what is the area

A sequence formed by subtracting each term of a sequence from the next term a. exponential decay b. exponential growth c. quadratic function d. Fibonacci sequence e. first differences f. range g. second difference h. exponential decay function

What is the slope and y-intercept for 5X + 13Y = - 13

1. If two angles are supplementary and one of them is 30°, what is the measurement of the second angle? A. 90° B. 60° C. 180° D. 150°

How to simplify y - 3/3 + 12

Sqrt (x) - 5.5 when x=16

A typical tip In a restaurant 15% of the total bill. If the bill is $120, what would the typical tip be?

Luke divided 16.80 by 2.5 as shown, but he forgot to put the

Kalvin tosses a coin five days in a row and gets tails everytime. Do you think there is something wrong with the coin? How can you find out?

A scuba diver dives down 30 feet into the ocean. he then swims 6 feet back up towards the surface. what is the postion of the scuba diver relative to the surface.