The surface area of a cylinder is 2*pi*r*h(side area)+2*pi*r^2(bases).
When you plug in the values: 2*pi*5*8+2*pi*25 = 80pi+50pi
Answer: 130pi
Answer:
x + 50° + 70° = 180°
or, x + 120° = 180°
or, x = 180° - 120°
•°• x = 60°
Step-by-step explanation:
x + 50° + 70° = 180° ( Due to Straight line )
Answer:
y=2.5x
Step-by-step explanation:
To get the equation in y = mx + b format, we need to find m and b, the slope and y-intercept.
To find the slope, we need two points on a graph, which we have.
First, the slope
The formula for slope is
Our points, (6, 15) and (2, 5)
Plugging into our equation:
, which is 10 divided by 4, which is 2.5
Our equation now:
To find our b, we need to plug in one x value.
(6, 15) are our pair of points.
6 = x
15 = y
=>
=>
If b is 0, then we don't need to include b.
Our equation is 
Answer:
Step-by-step explanation:
3(2x - 8) + 4x = -2(12 - 7x) - 4x
6x - 24 + 4x = - 24 + 14x - 4x
10x + 24 = 24 + 10 x
Answer:
84 is the highest possible course average
Step-by-step explanation:
Total number of examinations = 5
Average = sum of scores in each examination/total number of examinations
Let the score for the last examination be x.
Average = (66+78+94+83+x)/5 = y
5y = 321+x
x = 5y -321
If y = 6, x = 5×6 -321 =-291.the student cannot score -291
If y = 80, x = 5×80 -321 =79.he can still score higher
If If y = 84, x = 5×84 -321 =99.This would be the highest possible course average after the last examination.
If y= 100
The average cannot be 100 as student cannot score 179(maximum score is 100)
