Answer:
height of the cone = 4.01273885 units
Step-by-step explanation:
Volume of a cone(V) is given by:
....[1]
where,
r is the radius and h is the height of the cone.
As per the statement:
A cone with radius 5 units and ts volume is 105 cubic units
⇒r = 5 units and V = 105 cubic units
Substitute these given values and use in [1] we have;
Multiply both sides by 3 we have;
⇒
Divide both sides by 78.5 we have;
or
h = 4.01273885 units
Therefore, the height of the cone is, 4.01273885 units
Answer:
I was gonna answer it but I'm in the wrong section I thought it was science then I saw it was math
Answer:
A. is 0
B. is -30
C. is 0
Step-by-step explanation:
Hope this helps!
Answer:
b) 91
Step-by-step explanation:
<u>Step 1: Multiple marks by its weights</u>
<em>Homework average:</em> 95 x 20% = 19
<em>Quiz average: </em>90 x 20% = 18
<em>Test average:</em> 87 x 40% = 34.8
<em>Final exam:</em> y x 20% = 0.2y
<u>Step 2: Add all weighted averages and find y</u>
19+18+34.8+0.2y = 90
71.8 + 0.2y = 90
y = 18.2/0.2
y = 91
Therefore, Anna needs to score minimum 91 in the final exam so that she can score a 90 in class.
Option b is correct.
!!
64x+80 (42-x)=2880
Solve for x
X=30 coach fare
42-30=12 First-class fare