Answer:
Y ≈ 59.0°
Step-by-step explanation:
Using the Cosine rule
cosY = 
with x = 22, y = 20, z = 18
cosY = 
= 
= 
, then
Y = 
( ) ≈ 59.0° ( to the nearest tenth )
Answer:
b the answer
Step-by-step explanation:
2/3 = 10/15
CE = 15
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Hello :
g(-1) = (-1)² -7(-1)-9 =1+7-9 = -1
<span>f(g(−1)) = f(-1) = -1-2 = -3.....( answer : B)</span>
Answer: D is correctly written in scientific notation.
Step-by-step explanation:
The base has to be between 1 and 10.
A has a base of 16.4 which is greater than 9.
B is not even in scientific because the base it being raise to an exponent
C has 0.71 as base which is less that.
