5 1/4 as a decimal is 5.25
this is because 1/4 is equal to 25/100
Answer:
I think that the first one is not a rhombus but the last two are.
Answer:
x =-1
Step-by-step explanation:

replace y by 2x +4 in the first equation
2(2x + 4) = 6x + 10
4x + 8 = 6x + 10
-2x +8 = 10
-2x = 2
x = -1
I do this in 3 ways:
Divide it into 10 equal pieces: So it will be .1 , .2, .3, .... .9 or 1/10 2/10
Divide it into 4 equal pieces: .25 ; .50 ; .75;
Divide it into 2 equal pieces: .5 or 1/2