1 tenth + 5 hundredth =

0.15

Step-by-step explanation:

123.45

i shall give you what each place value of each number

1 hundred ( 100)

2 tens ( 20)

3 units (3)

4 tenths (0.45)

5 hundredth (0.05)

hence :

one tenth is 0.1

5 hundredth is 0.05

0.1 + 0.05

answer: 21$

step-by-step explanation:

$42 / $14 = 3   (ratio 3: 1)

$7 x 3 = $21

5x+40

5(x + 8)

7x - 49

7(x - 7)

18x + 9

9(2x + 1)

15x - 10

5(3x - 2)

step-by-step explanation:

for number one all you have to do is factor 5 out of 5x + 40

for number 2 factor 7 out of 7x - 49

for number three factor 9 out of 18x + 9

for number four factor 5 out of 15x - 10