Cristina has completed .4 of his test. the test has 40 questions total. if he completes 12 more how many more will he have left?

Select all the correct answers. what is 221,000,000,000,000,000,000 expressed in scientific notation?

Find the center and the radius of the circle with the equation: x^2-2x+y^2+4y+1=0?

Even if a person is in very good shape, applying to be a police officer requires commitment to fitness. applicants must pass a physical fitness test. in order to prepare for the test, janet purchases an activity tracker to court her steps. her goal is to walk 10,000 steps each day. she measures heard average step length to be 30 inches. play janet runs, her average steps length increases to 36 in. how many steps would she have to take to run 1 mile 50280 round to the nearest step