3. challenge in obtuse triangle abc, bc is the longest side. ac is also a side of a 21-sided regular polygon. ab is also a
side of a 28-sided regular polygon. the 21-sided regular polygon and the 28-sided regular polygon have the same
center point p. find n if bc is a side of a n-sided regular polygon that has center point p.
(hint: sketch a circle with center p and place points a, b, and on the circle.)

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?

Which angle has the same measure as the dehedral angle formed by the orange face and the purple rectangle

Anull hypothesis states that the difference between 8 hours of sleep and 3 hours of sleep has no effect on the number of pictures a student will remember during a picture memory interface test (pmit). examining the mit database, an extremely small t-value of 0.1611 is found. this t-value is much smaller than the smallest t-value on the chart for p-value reference. from this information we can: select one: a. accept the null hypothesis because the p-value obtained shows that the difference between the two groups being tested is not statistically significant b. accept the null hypothesis because the p-value obtained was statistically significant c. reject the null hypothesis because of the p-value obtained d. reject the null hypothesis because the data obtained is statistically significant