Marcus goesTo the park which is 4 miles away he walks 5/12 of the way and then jogs the rest of the way how many miles does he walk

What is the number 321,000,000 in scientific notation? also what is the number? ?

The sat and act tests use very different grading scales. the sat math scores follow a normal distribution with mean 518 and standard deviation of 118. the act math scores follow a normal distribution with mean 20.7 and standard deviation of 5. suppose regan scores a 754 on the math portion of the sat. how much would her sister veronica need to score on the math portion of the act to meet or beat regan's score?

What’s the answer ? use the picture to see the problem