"None" is a your clue word... if "none" means zero, then there is still "6 birds" because 0 left.
In a equation it will look like this: 6 - 0 = 6
Answer:
ABD = 49 DEGREES
CBD = 28 DEGREES
Step-by-step explanation:
Add ABD AND CBD equations TOGETHER
8x+5=77
Subtract 5 both sides.
8x=72
x=9
Now you have x, this isn't all you have to do, put x into the equations you have.
3(9)+22=?
27+22= 49
ABD = 49 degrees
5(9)-17=?
45-17= 28
CBD = 28 degrees
to check work, 49 + 28 = 77
5 x 4 x 3 x 2 x 1
= 120
there should be 120 different ways
2ab - 3a = a.(2b-3)
now the same thing
let's say n=1
a.(2b-3) + n.(2b-3) = (2b-3).(a+n)
Understood?
Answer:
129.3 feets
Step-by-step explanation:
Using the solution diagram attached below :
The difference in height of the two buildings :
Building B - Building A = (654 - 480) = 174 feets
Using trigonometry :
Cosθ = opposite / Adjacent
Cos 42 = d / 174
d = 174 * Cos 42
d = 129.307
d = 129.3 feets
