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.
Answer:
Step-by-step explanation:
Since the length of time taken on the SAT for a group of students is normally distributed, we would apply the formula for normal distribution which is expressed as
z = (x - u)/s
Where
x = length of time
u = mean time
s = standard deviation
From the information given,
u = 2.5 hours
s = 0.25 hours
We want to find the probability that the sample mean is between two hours and three hours.. It is expressed as
P(2 lesser than or equal to x lesser than or equal to 3)
For x = 2,
z = (2 - 2.5)/0.25 = - 2
Looking at the normal distribution table, the probability corresponding to the z score is 0.02275
For x = 3,
z = (3 - 2.5)/0.25 = 2
Looking at the normal distribution table, the probability corresponding to the z score is 0.97725
P(2 lesser than or equal to x lesser than or equal to 3)
= 0.97725 - 0.02275 = 0.9545
Step-by-step explanation:
You can use the unituary method in this one
First card:
$25/750 min
divide both sides by 750 to figure out how many $ per min the calling card would be
25/750=0.033333333333333333333333333333333333333
750/750=1
the first card costs $0.03333333(going on)/min
Second card
$40/1,300 min
Divide both sides by 1,300
40/1300=0.03076923
1300/1300=1
Second card costs $0.03076923/min
$0.03076923<$0.03333333(going on)
therefore the second card is the better deal
Cosine is positive in Quadrant IV.
Answer:
395 cookies are made after 10 days
Step-by-step explanation:
Gianna makes 30 cookies each day.
275-215= 60/2 =30
30*4= 120
275+120=395 cookies made after 10 days
