The difference between two numbers, a and b, is 21. the difference of 5 times a and two times b is 18

Ben is three times as old as samantha, who is two years older than half of michel's age. if michel is 12. how old is ben?

Jeremy wants to determine the number of solutions for the equation below without actually solving the equation. which method should jeremy use?

On the way home from visiting his family, vincent’s plane cruised at an altitude of 3.2 × 10^4 feet. he had heard that a man named felix baumgartner skydived from an altitude of 1.28 × 10^5 feet. vincent wants to know how much higher felix went on his skydiving trip. question 1 you have already seen how adding numbers works in either scientific notation or standard notation. but can you subtract numbers in scientific notation and get the same results as subtracting in standard notation? to find out, first solve vincent’s problem in standard notation. part a write the cruising altitude of vincent’s plane in standard notation.