The mean life of a Brand Q car battery is 36 months. The standard deviation is 4 months. 68% of all batteries will have a life between months and months.

If the discriminant if a quadratic equation is 4 which statement describes the roots?

Which graph has figures that can undergo a similarity transformation to justify that they are similar? (obviously not the third one)

Astudent is determining the influence of different types of food on the growth rate of spiders. she feeds one group of spiders two caterpillars twice a week. the other group received similarly-sized beetles twice a week. she records the amount of time required for individuals to reach sexual maturity. her hypothesis is that the spiders feeding on caterpillars will have a faster growth rate because caterpillars have a higher protein content compared to beetles. in this experiment, what is the dependent variable? spiders assigned to different feeding groups. time required to reach sexual maturity number of prey items fed twice a week. growth rates of each group.