Copy these incomplete number lines. label the missing numbers on each of them.

a.

20/2 = 10

0, 10, 20, 30, 40, 50

b.

32.4/4 = 8.1

0, 8.1, 16.2, 24.3, 32.4, 40.5

c.

8.8/4 = 2.2

0, 2.2, 4.4, 6.6, 8.8, 11

d.

10/3 = 3.3

0, 3.3, 6.7, 10, 13.3, 16.7

(a) 0, 10, 20, 30, 40, 50.

(b) 0, 8.1, 16.2, 24.3, 32.4, 40.5.

(c) 0, 2.2, 4.4, 6.6, 8.8, 11.

(d) 0, 3.33, 6.67, 10, 13.33, 16.67.

Step-by-step explanation:

Part a.

From the given number line it is clear that

2 units = 20

So, length of 1 unit is

Therefore, the numbers on the number line are 0, 10, 20, 30, 40, 50.

Part b.

From the given number line it is clear that

4 units = 32.4

So, length of 1 unit is

Therefore, the numbers on the number line are 0, 8.1, 16.2, 24.3, 32.4, 40.5

.

Part c.

From the given number line it is clear that

4 units = 8.8

So, length of 1 unit is

Therefore, the numbers on the number line are 0, 2.2, 4.4, 6.6, 8.8, 11.

Part d.

From the given number line it is clear that

3 units = 10

So, length of 1 unit is

Therefore, the numbers on the number line are 0, 3.33, 6.67, 10, 13.33, 16.67.

∠acb = 8°

step-by-step explanation:

∠xba lies on the circle and is half the measure of the intercepted arc ax

hence

measure of arc ax = 2 × 42° = 84°

∠acb is outside the circle and is

∠acb = (arcab - arcax ), hence

∠acb = 0.5 (100 - 84) = 0.5 × 16° = 8°