The mean of 20 items is 40 and the mean of another 30 items is 60. What is the mean of
de angles of
whole set of items?​

At this point just choose a mean thats half of the value

Just divide the value by 2 and you will get the mean

72 fudge and 75 toffee

step-by-step explanation:

i hope this : )

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.