4x +7y =-14 X + 4y =-8
1 answer:
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Answer:
see explanation
Step-by-step explanation:
the translation rule (x, y ) → (2x, y )
means multiply the x- coordinate by 2 and multiply the y- coordinate by ), so
A (- 1, - 3 ) → A' (- 2, - 1 )
B (4, - 3 ) → B' (8, - 1 )
C (4, 3 ) → C' (8, 1 )
D (- 1, 3 ) → D' (- 2, 1 )
Arccos is the same thing as inverse cosine which is used when you are looking for an angle measure. Make sure your calculator is in degree mode. Hit 2nd button then cos and you will see this on your screen: 
and it is following the parenthesis there that you will enter your decimal. The inverse cosine of .67 is an angle measure of 47.93°
Answer:
Step-by-step explanation:
In indices, the division postulate is true:
Apply this to the question:
Hence the expression expressed in the form