Answer:
Perpendicular
Step-by-step explanation:
-2x+3y=-1
6x+4y=4
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3y=-1-(-2x)
3y=-1+2x
3y=2x-1
y=2/3x-1/3
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4y=4-6x
4y=-6x+4
y=-6/4x+4/4
y=-3/2x+1
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2/3 and -3/2 are negative reciprocals, therefore, they are perpendicular.
Step-by-step explanation:
It is solved above
no of children and adult are let as x and y respectively
Answer:
a.. rs 7000
Because 15×1000=15000 it is SP when selling 1000units in the rate of Rs 15/unit& 8×1000=8000 this is cp when buying 1000 units in the rate of Rs 8/unit.
So,by formula of profit,
Rs (15000-8000)=Rs7000
The height of the fire department is 244.72 m
Step-by-step explanation:
A)
Angle of elevation = 73°
The distance between the two buildings = 46 m
tan 73° = b/46
tan 73° = 3.27
tan 73° = b/46
3.27 = b/46
b = 3.27 x 46
b = 150.42 m
B)
Angel of depression= 64°
The distance between the two buildings = 46 m
tan 64° = a/46
tan 64° = 2.05
tan 64° a/46
2.05 = a/46
a = 2.05 x 46
a = 94.3 m
The total height of the fire department building = a + b
= 94.3 + 150.42
= 244.72 m
The height of the fire department is 244.72 m
The answer you would get would be x (-x^2-x+4+7x^4)