Answer:
12 feet
Step-by-step explanation:
Two buildings have the same total number of heights
The first building has 6 floors each with height h
The second building has a ground floor of 36 feet and 3 other floors each
Since both buildings have the same height then
Height of first building= height of second building
The first step is to calculate the height of the first building
Height of first building = 6h
The height of the second building is
36 + 3h
Therefore the height of each floors can be calculated as follows
6h= 36 + 3h
Collect the like terms
6h-3h = 36
3h= 36
h= 36/3
h= 12
Hence the height of each floors is 12 feet
Answer:
I will be using differentiation method
Step-by-step explanation:
x^2+5x =-8
2×x ×x^2-1 +5x = -8
2x +5x = -8
7x = -8
divide both sides by the co-efficient of x
7x÷7=-8÷7
x =-1.5
Answer:
131
Step-by-step explanation:
(-)86+45
86 + 45 = 131
Hi
The answer would be =
Why?
The `| |` symbols mean actual value, which makes every number inside of it positive. That would mean, following the rules of actual value, the equation would look like:
5 + 2 _____ 5 + 2
Both add up to 10, so both equations are equal.
Answer:
Option 4, 64 cm^2
Step-by-step explanation:
The polygon in the shape of a star can be made to be easier to find the area of by cutting it into triangle. For all the "point edges" of the star, we can cut them in half from the vertex to create two right-angled triangles at each edge.
The formula of the area of a triangle is bh/2: the height is given as 6cm, the base is 4cm /2 (after you cut it in half) and so is 2 cm. Since the edges can be cut into two, there are 8 right angled triangles at the edges in total.
To find the area of them:
A=8(bh/2)=8(2*6/2)=48 cm^2
However, we are still missing the part at the centre we haven't found the area of, the square. The area of a square is given by the square of the side length(4cm). Thus, A=4*4=16cm^2
Adding the areas of all the edges and the square:
48 + 16 = 64cm^2
Hence, the area of the polygon is 64cm^2
