A random sample of 20 watermelon seeds is harvested from each of 4 different varieties of watermelons. Within each variety, 10 seeds are randomly chosen to be soaked in water for 24 hours before being planted in individual seed starting trays. The remaining 10 seeds from each variety are simply planted individually in seed starting trays. After one week the heights of the seedlings are measured. What type of study design is this?

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?

What percent of 18 is 24? and plz explain thx.

Sara has been reading about different types of financial grants, including federal pell grants, academic competitiveness grants, smart grants, and teach grants. which statement about these grants is true? filling out a fafsa will not her apply for these grants. she will not have to pay back any funds she receives from these grants. these grants only go to students with less than a 3.0 gpa. she will have to pay back all the funds she receives from these grants.