Question

Please help me I will give thanks to you help me with all questions please

Answer 1

Answer:

Here is your answer

Step-by-step explanation:

a.

1.72=

multiply 10 to both sides

10x=17.2......

subtract x from both sides

10x-x=17.2.....-(1.72.....)

9x=15.5

9x=155/10

x=155/10

b.let x=0.9.....

multiply 10 to both sides

10x=9.9....

subtract x from both sides

10x-x=9.9....-(0.9.....)

9x=9

x=9/9=1

c.let x=3.165....

multiply 100 to both sides

100x=316.5....

subtract x from both sides

100x-x=316.5....-(3.165...)

99x=313.4

99x=3134/10

x=3134/990

making to simpler form is not necessary

hope this helps