Answer:
The width of bookcase D is 61 cm
The width of bookcase E is 61 cm
Step-by-step explanation:
see the attached figure to better understand the problem
step 1
Sum the widths of the three bookcases A, B and C

step 2
Subtract the sum of the three bookcases A,B and C from the total length of the wall

step 3
Divide that answer in step 2 by 2, and that will let you know the widths of D and E, because they may have equal widths

therefore
The width of bookcase D is 61 cm
The width of bookcase E is 61 cm
Answer:19%,1/5,0.23
Step-by-step explanation:
If you convert them to decimals,The numbers are .19 .20 .23
Answer:
7
Step-by-step explanation:
4+2=6
1/2 + 1/2 = 2/2
Because the denominator and the nominator is the same, that equals to a whole.
so you add the wholes
6+1=7
<span>4. Unit rate implies how much in one hour. If 306 miles is in 10 hours, in one hour, it will be just one-tenth of 306 miles. So divide 306 by 10. To divide by 10, just place a point before one digit from the right. So the answer will be 30.6 milers/hour.
5. Unit rate here implies how much in one month. If 33.6 gallons is in 6 months, in one month, it will be just one-sixth of 33.6 gallons. So divide 33.6 by 6. The answer will be 5.6 gallons/month.</span>