A. this year, there was 40% more snow than last year.
b. this year, there were 25% fewer sunny days than
last year.
c. compared to last month, there was a 50% increase
in the number of houses sold this month.
d. the runner's time to complete the marathon was a
10% less than the time to complete the last
marathon.

Arley is building a model of a city map. in one part of the city, three roads form a right triangle, which harley draws as triangle abc, with the following measures: m∠b=90° and m∠a=30°. in his scale model, the hypotenuse of triangle abc, ac¯¯¯¯¯¯¯¯, has a length of 817−−√ cm. what is the value of a (the length of bc¯¯¯¯¯¯¯¯)?

The length of triangle base is 26. a line, which is parallel to the base divides the triangle into two equal area parts. find the length of the segment between triangle legs.

Which statement justifies why angle ebc measures 90?