Students : A B C D E F
3 of them (A, B, & C) must be seated together
options::
A B C D E F ..... D E F A B C ..... D A B C E F ..... D E A B C F
A B C D F E ..... D F E A B C ..... D A B C F E ..... D F A B C E
A B C E F D ..... E F D A B C ..... E A B C F D ..... E F A B C D
A B C E D F ..... E D F A B C ..... E A B C D F ..... E D A B C F
A B C F E D ..... F E D A B C ..... F A B C E D ..... F E A B C D
A B C F D E ..... F D E A B C ..... F A B C D E ..... F D A B C E
24 options
Volume of a quadrangular pyramid=(1/3)bh
b=base
h=height
b=area of the base=area of a square=8.4 ft * 8.4 ft=70.56 ft²
Pythagoras theorem:
hypotenuse²=leg₁² + leg₂²
data:
hypotenuse=9.6 ft
leg₁=height=h
leg₂=8.4 ft /2=4.2 ft
(9.6 ft)²= h² + (4.2 ft)²
92.16 ft²=h²+17.64 ft²
h²=92.16 ft²-17.64 ft²
h²=74.52 ft²
h=√(74.52 ft²)=8.63 ft.
Volume of this quadrangular pyramid=(1/3)(70.56 ft²)(8.63 ft)=202.9 ft³≈202.3 ft³
Answer: ≈202.3 ft³
Answer:
63x-8<u><</u>23
63x<u><</u>23+8
<u>63</u><u>x</u><u> </u><u><</u><u> </u><u>31</u>
63. 63
x<u> </u><u><</u> 0.492
16, think of 4 plus 4 plus 4 plus 4.
Answer: 57%
Step-by-step explanation:
Davis's monthly expenditure and his monthly salary was 3 : 7.
This means that for every $7 he received, he spent $3 out of it.
The amount he saved is therefore:
= 7 - 3
= $4
For every $7 received, he saved $4.
Percent = 4/7
= 57%
