Mario needs to cut three book shelves from a board that is 1.8 meters long. the second shelf is 15 centimeters longer than twice the length of the first shelf . the remaining shelf is 5 centimeters longer that the first shelf. the equation below represents this situation, where x is the length of the first shelf in meters x+(2×+0.15)+(×+0.05)=1.8

A. 0.40
B.0.45
C.0.53
D.0.96​

0.40

Step-by-step explanation:

4x+0.15+0.05=4x+0.2=1.8

1.8-0.2=1.6

1.6/4->x=0.4

3/4 ÷ 3/4

step-by-step explanation:

basically divide any proper fraction with itself to fit the criteria.

so if we are using 3/4, then:

3/4 ÷ 3/4 = 1

so 1 is the quotient.

and the numerators for both these fractions is 3.   and if we divide the numerators:

3 ÷ 3 = 1

we see that quotient is equal to our original quotient as well.