Step-by-step explanation:
First thing first, let find the x value of where P and Q both meet y=5, we know that y=5, and y=2x^2+7x-4, so using transitive law,
Now, to find the gradient of the curve let take the derivative of both sides
Plug in -9/2, let call that point P
Plug in 1, let call that point Q
So the gradient of the curve at point P (-9/2,5) is -11
The gradient of the curve at point Q (1,5) is 11.
97336/125
mixed number form: 778 86/125
i attached a picture of my work (sorry it’s a little sloppy haha i did it quickly)
what i did was convert each mixed number to an improper fraction, then simply multiplied the numerators by each other and then the denominators by each other
Answer:
1065
Step-by-step explanation:
A right square pyramid consist of
- 1 base area which is a square, area of square = l²
- 4 triangles, area of a triangle = 1/2 (slant height)(base)
area of 4 triangle = 2 (slant height)(base)
In question we are given perpendicular height of pyramid not the slant height so first we will calculate the slant height.
By using pythagorus:
Slant height = √(24²+8²)
= 8√10
Surface area = baseArea + 2 (slant height)(base)
= 16² + 2( 8√10)(16)
= 1065