Answer:
66
Step-by-step explanation:
Use the formula for the mean of a set of numbers:
sum of the numbers
average = --------------------------------
count of numbers
Here we know that the average mark was 68, so we can write:
75 + 62 + 84 + 53 + x
average = 68 = ----------------------------------
5
or 274 + x
68 = -------------------
5
Solving for x, we multiply both sides by 5: 340 = 274 + x.
Subtracting 274 from both sides effectively isolates x:
340 = 274 + x
- 274 -274
------------------------
66 = x
The fifth student's mark was 66.
Answer:
B
Step-by-step explanation:
an additional hour of walking is associated with an additional 0.7 mile walk
NO IM LATE IM SO SORRY IT B
The cost of the tablet computer is less in France. It is $8.
Step-by-step explanation:
Cost in France = 600 euros
75 euros = 1 dollar
600 euros = 600/75 dollars
=$ 8
Cost in Britain = 533 pounds
65 pounds = 1 dollar
533 pounds = 533/65 dollars
= $8.2
The cost of the tablet computer is less in France. It is $8.
Answer: The slant height of the cone is 65.6 m
Step-by-step explanation:
Given: The diameter of a cone = 10 m
Surface area of cone = 190.6 m²
To find: Slant height
Diameter of cone = 10 m
Therefore Radius of cone = 
As we know that surface area of a cone is given by
Where S.A. is surface area , r is the radius of cone and l is the slant height of the cone.
Let Slant height = l
So we have
Hence the slant height of the cone is 65.6 m
