Mandy built a pyramid for her project on Egypt with a
2 answers:
Answer:
The area of the base of the pyramid is 9.6 square inches.
Step-by-step explanation:
Given : Mandy built a pyramid for her project on Egypt with a volume of 48 in.
To find : The area of the base of the pyramid ?
Solution :
The formula of volume of pyramid is
where, B is the area of the base
and h is the height
The volume is .
The height is 5 inches.
Substitute the value,
Therefore, the area of the base of the pyramid is 9.6 square inches.
You might be interested in
We know that the points at which the parabola intersects the x axis are
(-5,0) and (1,0)
So the extent between these two points would be the base of the triangle
lets find the length of the base using the distance formula
the base b=6
We will get the height of the triangle when we put x=0 in the equation
y=a(0+5)(0-1)
y=-5a
so height = -5a (we take +5a since it is the height)
We know that the area of the triangle =
× 6 × (5a) = 12
15a=12
a=
Answer:
hope you can understand
Answer:
y =
Step-by-step explanation:
Let the total numbers are n.
If the average of y numbers is x then we can form an equation
⇒
⇒ n = --------(1)
Now 30 is added to the set of numbers then average becomes (x - 5)
⇒
⇒ (n + 1) =
⇒ n = - 1 ----- (2)
Now we equate the values of n from equation 1 and 2
=
- 1
y(x - 5) = x(y + 30) - x(x - 5) [ By cross multiplication ]
xy - 5y = xy + 30x - x² + 5x
xy - xy - 5y = 35x - x²
-5y = 35x - x²
x² - 35x = 5y
y =