Answer:
Hence, the surface area of cone is:
282.6 cm^2 which is approx 283 cm^2.
Step-by-step explanation:
We are given:
- The circular base of a cone has a radius of 5 centimeters.
i.e. r=5 cm.
- The height of the cone is 12 centimeters
i.e. h=12 cm.
- The slant height is 13 centimeters.
i.e. l=13 cm.
Now we know that the surface area(S.A.) of cone is given by:
Hence by putting the value of l,r and π in the formula we get:
Hence the surface area of cone is 282.6 cm^2 which is approx 283 cm^2.
Answer:
Step-by-step explanation:
<u>Proportional relationship:</u>
<u>Given:</u>
<u>Find k:</u>
Answer:
Step-by-step explanation:
y = 2x - 3 --------------(i)
y = x² - 2x - 8 -----------(ii)
Substitute y = x² - 2x - 8 in equation (i)
x² - 2x - 8 = 2x - 3
x² - 2x - 8 - 2x + 3 = 0
x² - 2x -2x - 8 + 3 = 0
x² - 4x - 5 = 0
x² + 1x - 5x -5 = 0
x(x + 1) - 5(x + 1) = 0
(x + 1)(x - 5) = 0
x + 1 =0 ; x -5 = 0
x = -1 ; x = 5
When x = -1; y =2*(-1) - 3 = -2 -3 = -5
When x = 5; y = 2*5 - 3 = 10-3 = 7
Answer:
X is 20 :)
Step-by-step explanation:
this is what you would do
set (2+3x)= 62
3x=62-2
3x=60
60/3=x
x=20!
Answer:
Mean = 5
Variance = 8.3521
Standard Deviation = 2.89
Step-by-step explanation:
X has the uniform distribution on [a, b]
[a, b] = [a, 10]
Mean is solved using (a + b)/2
Standard Deviation = 
Standard Deviation =
Variance = 
Variance = 
