Answer:
the index of 2 is -1
Step-by-step explanation:
=
=
Lines AB and CD intersect at E, mLAED = 110,
2 answers:
Answer:
x = 10, y = 20
Step-by-step explanation:
Form a system of equations:
From the picture at the bottom you can see that vertical angles are equal, so:
Then, since the angles all together will add up to 360, you can do
subtract 70 from both sides
With the equation 3x + 2y = 70, multiply both sides by 2
Subtract the two equations:
Plug this into one of the original equations
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Variance of a continuous random variable X is defined as
Standard deviation is defined as
Hence standard deviation is the positive square root of variance.
Answer:
$ 154
Step-by-step explanation
Let the value of suitcase=x
x × 4.5% = 6.93 (converted the question into equation)
x × = 6.93 (converted the percentage into fraction)
x = 6.93 x (took reciprocal of 4.5/100 after moving it to the other side of the equation)
x = (multiplied the values)
x = 154 $ (simplified the fraction)
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