For 4 through 9, solve each equation. Check your answers. 4. x ➗ 8 = 5.6

5. p x 3.4 = 7.48

6. 4z = 50.8

7. 56 = 1.4t

8. n ➗ 2.1 = 12

9. 5 = s ➗ 3.7

On a string instrument, the length of a string varies inversely as the frequency of its vibrations. an 11-inch string has a frequency of 400 cylces per second. find the frequency of a 10-icnch string.

Assume that the weights of quarters are normally distributed with a mean of 5.67 g and a standard deviation 0.070 g. a vending machine will only accept coins weighing between 5.48 g and 5.82 g. what percentage of legal quarters will be rejected? round your answer to two decimal places.

Ageologist had two rocks on a scale that weighed 4.6 kilograms together.rock a was 0.5 of the total weight.how much did rock a weigh?