You could do the negative square root of 16 and the negative square root of 25 to get -4 and -5. So this means the answer is negative square root of 20 is in between -4 and -5
The value for y is 17.5°
The equation is
Sin (3y - 30°) = Cos (7y +50°)
<h3>What is Trigonometry ?</h3>
Trigonometry is the branch oh Mathematics which involve the study of right angles , its sides and trigonometric ratios.
the equation given in the question is
Sin (3y - 30°) = Cos (7y +50°)
cos(90 -
) = sin 
Therefore
sin(3y-30°) = sin( 90-(7y+50°)
Equating the terms
3y - 30 = 90-7y -50
4y = 90-50+30
4y = 120-50
4y = 70
y = 17.5
The value for y is 17.5°
To know more about Trigonometry
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Answer:
(0.5, 2)
Step-by-step explanation:
substitution method is when you substitute a variable for another
so, it is given that y=2x+1 and y=6x-1. so we know the 'y' value is equal since they are the same thing
hence:
y=2x+1
y=6x-1
2x+1=6x-1
4x=2
x=1/2
y=2
Answer:you would tell them that you would divide $15.00 by 3 to get you’re answer.