Aprillove7939
30.08.2019 •
Mathematics
Arectangular pyramid fits exactly on top of a rectangular prism. the prisim has a length of 15 cm, width 5 cm, and height 7 cm, and the pyramid has a height of 13 cm. find the volume of the composite space figure
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Ответ:
We have givens such as:
l=15 cm
w=5 cm
h=7 cm
Solving for the volume, we have:
V=(15*5*13)/3
V=325
Solving for prism volume
V=l*w*h
V=15*5*7
V=175
For the composite volume:
CV=325+175
CV=500
Ответ:
The formula for a rectangular pyramid is equal to V=(l*w*h)/3 where "l" represent the length, the "w" represents the width and "h" represents the height.
We have givens such as:
l=15 cm
w=5 cm
h=7 cm
Solving for the volume, we have:
V=(15*5*13)/3
V=325
Solving for prism volume
V=l*w*h
V=15*5*7
V=525
For the composite volume:
CV=325+525
CV=850
Ответ:
Solution:
The two equation given which are in two variables are
1. y = x²-2 x -1 9
2. y + 4 x=5
Writing equation 2 as→y = 5 -4 x
Substituting the value of y in equation 1
⇒ 5 - 4 x = x² - 2 x - 19
⇒x² - 2 x + 4 x -19 -5=0
⇒ x² + 2 x -24=0
⇒x² + 6 x - 4 x - 24=0→→→[Breaking the middle term i.e term containing x]
⇒ x(x+6) -4(x+6)=0
⇒(x-4)(x+6)=0
⇒x-4=0 ∧ x+6=0
⇒x = 4 ∧ x= -6
Put x=4 in equation 2,
y + 4 ×4=5
y + 16=5
y = 5-16
y= -11
As one solution is (-6, 29), The other solution of the system of equation is (4, -11).