Answer:
B
Step-by-step explanation:
sinA=opp/hyp
sinA=16/20=4/5
cosA=adj/hyp
cosA=12/20=3/5
-7=-9+n/8
Add 9 to both sides
2=n/8
Multiply 8 on both sides
Final Answer: 16=n
Well, the first one, I have never worked with before so I'm sry but I can't help you with that one. 3y + x = 4 (x=1) 2y - x = 6 (x=8)
Answer:
Estimate the value of pi =3.14
Step-by-step explanation:
The diameter of the circle base of a storage container 18.8m
The diameter of the circle 'd' = 2r
Given data 'd' = 2r = 18.8m
The circumference of the circle = 2πr
Given data of circumference of the circle = 59 m
given 2πr = 59
2r(π) = 59
18.8 π = 59 ( by using 2r =18.8)
π = 59/18.8
π = 3.13829
π = 3.14
<u>Conclusion</u>:-
Estimate the value of pi =3.14
The two given angles are vertical angles which mean they are the same:
9x + 72 = 4x + 112
Subtract 72 from bot sides:
9x = 4x + 40
Subtract 4x from both sides:
5x = 40
Divide both sides by 5:
X = 8
