Abook is opened, and the product of the two visible page numbers is found to be 306.

Two visible pages means the numbers have to be off by only one number.  Pick two numbers that when multiplied by each other will give you an answer of 306.  If the book was opened to pages 17 and 18 then you would multiply 17 x 18 and the answer would be 306. 

Hope this helps.

Have a blessed day!

Keith

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.

just pick what you think i need more time let me know if this

step-by-step explanation: