A Christmas gift is tied with ribbon the bow requires 47cm of ribbon, what is the total length of the ribbon in cm?
1 answer:
The complete question is as follows: A Christmas gift is tied with ribbon the bow requires 47cm of ribbon, what is the total length of the ribbon in cm?
Answer: The total length of the ribbon is 177 cm.
Step-by-step explanation:
As there are 4 sides of the rectangular box and 20 cm of ribbon is on each side. This means that a total of = 80 cm is there on the top and bottom.
Hence, length of ribbon attached at the left and right side of the box is as follows.
This means that on both left and right side a total of 50 cm is there.
Therefore, total length of ribbon is as follows.
Total length = 47 cm + 50 cm + 80 cm = 177 cm
Thus, we can conclude that the total length of the ribbon is 177 cm.
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Answer:
Ernest gets 194 monthly allowance
Step-by-step explanation:
* Lets revise the rule of the average
- Average = The sum ÷ the total number
- Assume that the allowances money of Ernest, Jack, David and Mike
are E, J, D, M respectively
∵ The average allowance money of Ernest jack David and mike is
123 per month per person
∴ 123 = (E + J + D + M) ÷ 4
- Multiply both sides by 4
∴ E + J + D + M = 492 ⇒ (1)
∵ The average allowance of Ernest jack and David is 159 per month
per person
∴ 159 = (E + J + D) ÷ 3
- Multiply both sides by 3
∴ E + J + D = 477 ⇒ (2)
- Subtract equation(2) from equation (1) to find M
∴ M = 15
* <em>Mike's monthly allowance is 15</em>
∵ David's monthly allowance is 2 less than mikes
∴ D = M - 2
∵ M = 15
∴ D = 15 - 2 = 13
∴ <em>David's monthly allowance is 13</em>
∵ Mikes monthly allowance is 1/18 of jacks
∴ M = × J
∴ 15 = × J
- Multiply both sides by 18
∴ J = 270
* <em>Jack's monthly allowance is 270</em>
- Substitute the values of D , J in equation (2) to find E
∵ D = 13 and J = 270
∵ E + J + D = 477
∴ E + 270 + 13 = 477
∴ E + 283 = 477
- Subtract 283 from both sides
∴ E = 194
* <em>Ernest's monthly allowance is 194</em>
*<em> Ernest gets 194 monthly allowance</em>
Answer:
={6,7,8,9,10}.
Step-by-step explanation:
We have an empty set: M={} and the set N={6,7,8,9,10}.
The union of these two sets are elements in M or N or both.
Since the M is a null set,
Therefore: ={6,7,8,9,10}.
The union for the given sets is {6,7,8,9,10}.