Which fraction is equal to 7 ¾?
a. 10/4
b.14/44
c. 21/4
d. 31/4

Scale factor of 2 is used to enlarge a figure as shown below the area of is 18 in.²

Use the quadratic formula to solve the equation. if necessary, round to the nearest hundredth. x^2 - 20 = x a. 5, 4 b. -5, -4 c. -5, 4 d. 5, -4

The standard deviation for a set of data is 5.5. the mean is 265. what is the margin of error?