Which proportion can be used to find the value of y? OS =
○ = 1
12
=
10 = 1
12

Step-by-step explanation:

in the given figure, we can observe that both triangles are similar since they have two equal angles of 100° and 60° .[By AA similarity criteria]

Also, the corresponding sides of similar triangles are proportional.

As side with measure 8 in bigger triangle corresponds side with measure 4 on the smaller triangle. [shortest side]

Similarly, side with measure 14 in bigger triangle corresponds side with measure y on the smaller triangle.  [longest side]

Using proportionality, we have

Hence, the proportion can be used to find the value of y is .

23

step-by-step explanation:

x > 1.3

step by step:

8.5−0.9x> 9.8−1.9x

step 1: simplify both sides of the inequality.

−0.9x+8.5> −1.9x+9.8

step 2: add 1.9x to both sides.

−0.9x+8.5+1.9x> −1.9x+9.8+1.9x

1x+8.5> 9.8

step 3: subtract 8.5 from both sides.

1x+8.5−8.5> 9.8−8.5

1x> 1.3

step 4: divide both sides by 1.

1x/1 > 1.3/1