Please help me with the following (1-5) Write the following numbers in scientific notation.

1. 405 352 cm =

2. 7.6352 x 10-3 kg =

3. 3.1 x 104 mm + 4.87 x 105 mm =

4. (4.8 x 105 km) x (2.0 x 103 km) =

5. (3.3 x 10-4 mL) ÷ (1.1 x 10-6 mL) =

Use the frequency distribution, which shows the number of american voters (in millions) according to age, to find the probability that a voter chosen at random is in the 18 to 20 years old age range. ages frequency 18 to 20 5.9 21 to 24 7.7 25 to 34 20.4 35 to 44 25.1 45 to 64 54.4 65 and over 27.7 the probability that a voter chosen at random is in the 18 to 20 years old age range is nothing. (round to three decimal places as needed.)

School has 204 sixth grade students. if the sixth grade is 30% of the total school, how many students are in the middle school?

Complete the conditional statement. if a + 2 < b + 3, then a < b b < a a – b < 1 a < b + 1