Describe the relationship between the two sets a and b if a ⊆ b. (no picture is provided in the question)

Set A is a subset of set B. It means that every element of set A should be present in set B.

Step-by-step explanation:

A ⊆ B

Set A is a subset of set B. It means that every element of set A should be present in set B.

i.e for all a ∈ A then a ∈ B

Example:

Let set A = {1,2,3}

and B = { 1,2,3,4,5,6}

then A ⊆ B because every element in set A {1,2,3} is also present in set B {1,2,3,4,5,6}

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.