The regression equation y=4x+20 approximates the number of people attending a picnic, y, given the number of flyers used to advertise it, x. Which statement is true? A-for every person attending a picnic, the number of flyers used to advertise it increases by 20.
B-for every person attending a picnic, the number of flyers used to advertise it increases by 4.
C-for every extra flyer used in advertising, the attendance increases by 4 people
D-for every extra flyer used in advertising, the attendance increases by 20 people

c.   x=2.4cm

step-by-step explanation:

similar triangles are triangles which have the same shape but not the same size. this means their angle measures are equal but their side lengths are not instead they are proportional. to solve, we will set up a proportion and solve.

a proportion is two equal ratios set equal to each other. we form the ratios by finding corresponding sides (sides which match to each other on both triangles by their position). out ratios will be one side of the small triangle over the corresponding side on the big triangle as shown below:

.

to solve the proportion, we'll cross multiply by multiplying numerator with denominator across the equal sign.

60

step-by-step explanation:

every triangle measures a total of 120 degrees. you have to find angle c. we know that isosceles triangles angles are equal. 60 degrees plus 60 degrees gives you 120.