The answers 9. I took the test :)
Answer: 195.5 or 12 7/32
Step-by-step explanation:
There is no letter tetha in the table so I use α instead. However it is not sence to final result.
The expression is:
(sinα+cosα)/(cosα*(1-cosα))
Lets divide the nominator and denominator by cosα
(sinα/cosα+cosα/cosα)/(cosα*(1-cosα)/cosα)= (tanα+1)/(1-cosα)=
=(8/15+1)/(1-cosα)= 23/(15*(1-cosα)) (1)
As known cos²α=1-sin²α (divide by cos²α both sides of equation)
cos²a/cos²α=1/cos²α-sin²α/cos²α
1=1/cos²α-tg²α
1/cos²α=1+tg²α
cos²α=1/(1+tg²α)
cosα=sqrt(1/(1+tg²α))= +-sqrt(1/(1+64/225))=+-sqrt(225/(225+64))=
=+-sqrt(225/289)=+-15/17 (2)
Substitute in (1) cosα by (2):
1st use cosα=15/17
1) 23/(15*(1-cosα)) =23/(15*(1-15/17))= 23*17/2=195.5
2-nd use cosα=-15/17
2)23/(15*(1-cosα)) =23/(15*(1+15/17))= 23*17/32=12 7/32
Answer:
(A.) x = y - 4
Step-by-step explanation:
All you need to do is subtract the 4 from both sides, giving you the final equation as x = y - 4.
Answer:
The volume of cylindrical trash is 82,782.96 cm³ .
Step-by-step explanation:
Given as :
The shape of the trash is cylinder
The radius of cylinder = r = 26 cm
The height of cylinder = h = 39 cm
Let The volume of cylindrical trash = v cm³
<u>Now, According to question</u>
volume = 
where 
= 3.14
So, v = 3.14 × r² × h
Or, v = 3.14 × (26)² × (39)
Or, v = 3.14 × 26,364
∴ v = 82,782.96 cm³
So, volume of cylindrical trash = v = 82,782.96 cm³
Hence, The volume of cylindrical trash is 82,782.96 cm³ . Answer
Answer:
4
Step-by-step explanation:
13 flowers- 9 left =4give
