Please help me, i have 6 math questions all of which are ratio questions. 1 of them are share 50 in the ratio 2:3.

number 2 is share 800 in the ratio 9:7.

number 3 is share 40 in the ratio of 1:3:6.

number 4 is share $770 in the ratio 4:7.

number 5 is share 1kg in the ratio of 4:6.

and lastly number 6 is share 6m in the ratio 7:3:5.

In dire need~! describe how to use area models to find the quotient 2/3 divided by 1/5. check your work by also finding the quotient 2/3 divided by 1/5 using numerical operations only.

Ur environment is very sensitive to the amount of ozone in the upper atmosphere. the level of ozone normally found is 4.04.0 parts/million (ppm). a researcher believes that the current ozone level is not at a normal level. the mean of 2525 samples is 4.44.4 ppm with a standard deviation of 0.80.8. assume the population is normally distributed. a level of significance of 0.020.02 will be used. make the decision to reject or fail to reject the null hypothesis. answer tables

If np3 /nc2 = 6, find the value of n