Answer:
3x + 4y = -36
y = 2x - 9
3x + 4(2x - 9) = -36
3x + 8x - 36 = -36
11x - 36 = -36
11x = 0
x = 0
y = 2(0) - 9
y= 0-9
y = -9
(0, -9) is the answer
Step-by-step explanation:
Answer:
-3
Step-by-step explanation:
45°?
Step-by-step explanation:
The second floor of a building is 20 m above the ground.
From this floor, the angle of
elevation of the top of an eucalyptus tree is 15°
and the angle of depression of the foot of the same tree is 10°
10+15+20=45
Answer:
Solution given:
sin y = -4/5
p/h=4/5
p=4
h=5
b=√{5²-4²)=3
cos y = b/h=-3/5
again
cos x=12/13
b/h=12/13
b=12
h=13
p=√(13²-12²)=5
sin x=p/h=5/13
now
sin[x-y]=sinxcosy-cosxsiny
=5/13×-3/5-(12/13×-4/5)=33/65 is your answer.
Number: 365
Exponent: 100
365 days in a year, and 100 days of rainfall. So 365 X itself 100 times.
