Perimeter = 2 times the width + 2 times the length
= 2(w + 7) + 2w where w = width
2(w + 7) + 2w = 66
4w + 14 = 66
4w = 66-14 = 52
w = 52/4 = 13
length = 13 + 7 = 20
width = 13 and length = 20
Answer:
Step-by-step explanation:
nickel, n=0.05
dime, d=0.10
0.90=0.05n+0.10d
however, n+d=15
Answer: 17/2
Step-by-step explanation:
1- <u>Add</u> up the numbers.
2- Cut 2 below the second fraction with 2 cubed, then 2 will be squared.
3- Solve the potentiation (2 squared is equal to four, because 2 * 2 = 4)
4- And, finally, compute 9/2 + 4. It will give 17/2.
Answer:
2½ boxes
Step-by-step explanation:
From the question given above,
We understood that the machine fills 1/2 box in 1/5 min.
Thus, we can simply obtain the number boxes the machine will fill by doing the following:
The machine fills 1/2 box in 1/5 min.
Therefore, the machine will fill y box in 1 min i.e
y box = (1/2 × 1) ÷ 1/5
y box = 1/2 ÷ 1/5
y box = 1/2 × 5/1
y box = 5/2 = 2½
Therefore, the machine fills 2½ boxes in a minute.