Solve for x and round to the nearest tenth

add the 2 angles: 89+80= 169

subtract 180-169= 11

11° is the measurement of the final angle

do sin(80)=12/x

x(sin(80))=12

plug in on calculator:

x=12/(sin(80))

a. 3/4 ÷ 1/8 = 6

step-by-step explanation:

in the question, the number line represents 3/4 divided into 6 equal units. each arrow represents a unit and there are a total of six arrows.

the size of each unit is 1/8 as shown.

showing that 1/8 divides 3/4 into 6 divisions:

3/4 ÷ 1/8

= 3/4 x 8/1

= 3/1 x 8/4

= 3 x 2

= 6

hence, the number line represents six divisions given by 3/4 ÷ 1/8.