BRAINLIEST!! HELP!!!
2 answers:
Answer:
V = 3712 m³
Step-by-step explanation:
The volume (V) of a pyramid is calculated as
V = Bh ( B is the area of the base and h the perpendicular height )
To find h use Pythagoras' identity
Where the slant height is the hypotenuse and the legs are h and half the width of the rectangular base, then
h² + 12² = 20², that is
h² + 144 = 400 ( subtract 144 from both sides )
h² = 256 ( take the square root of both sides )
h = = 16
Thus
B = 29 × 24 = 696 m² and h = 16, hence
V = × 696 × 16 = 232 × 16 = 3712 m³
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Answer:
x=10 and y= 8.
Step-by-step explanation:
Given that the cost of 1 banana = $0.60
Cost of 1 mango = $1.50.
Total cost= $ 18
Here, x be the number of bananas and y be the numbers of mangos,
As the number of bananas is 2 more than the number of mangos,
So, x=y+2
Cost of x bananas
Cost of y mangos
Total cost = 0.6x+1.5y
Solving both the equations (i) as well as (ii), graphically as shown in the figure by plotting both the graphs.
Both the graphs intersect at the point (10,8) as shown in the graph.
So, the solution of both the equations is, (x,y)=(10,8). i.e
The number of bananas = x= 10 and
the number of mangos = y = 8.
