The z-score for 81 is 1.75
<h3>How to determine the z-score for 81?</h3>
The given parameters are:
μ = 60 , X=81, and σ = 12
The z scores is calculated using:

Substitute the given values

Evaluate the difference

Simplify
z = 1.75
Hence, the z-score for 81 is 1.75
Read more about z-scores at:
brainly.com/question/25638875
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Divide 4 by 1, you get 4. Divide 120 by 4, get 30. Hope this helped!
Answer:
1/ √2
Step-by-step explanation:
Here, we want to get the value of sin 45
Mathematically the sine is the ratio of the opposite to the hypotenuse
The opposite here is 1 while the hypotenuse is
√2
so the value of sin 45 will be;
1/ √2
Answer:
Step-by-step explanation:
D. the corresponding sides of triangle ABC and triangle A'B'C' are congruent
because the sides do not change their length when we rotate the triangle
y = 2x-10 switch x and y x = x = 2y-10 then solve for y 2y = x+10 y = (½)x+5 f⁻¹(x) = (½)x+5 Hope this helps and leave a rate, thanks and brainliest to help me reach expert ;)