Select the correct answer from each drop-down menu. (cos2x-cos4x)/(sin2x+sin4x)=

a. cot x

b. tan x

c. sin x

d. cos x

(cos2x+cos4x)/(sin2x-sin4x)=

a. cot x

b. -cot x

c. sin x

d. -tan x

Iq scores for adults age 20 to 34 years are normally distributed according to n(120, 20). in what range does the middle 68% of people in this group score on the test?

Lin is writing an equation to model the proportional relationship between y, the total cost in dollars of downloading videos from a website, and x, the number of videos downloaded. she knows that the total cost to download 3 videos was $12. her work to find the equation is shown below. joylin’s work step 1 k= 3/12= 0.25 step 2 y= 0.25x where did joylin make her first error?

Roger could feed 5 walruses with 4 kilograms of fish. how many walruses could he feed with 7.2 kilograms of fish?