Step-by-step explanation:
tell me when you get the answer
Remember that the quadratic formula is: 
.
stands for the coefficient of the first term, the one associated with the 
, 
stands for the coefficient of the second term, the one associated with 
, and 
stands for the value of the constant.
In 
, our a-value is 1, our b-value is also 1, and our c-value is also 1.
Thus, when we plug in our values into our formula, we get the answer:
Simplifying this answer using 
, we get our final answer of:
To write this value simply write the first part of the value before the decimal point
Which is 34
Then since it says 12 hundredths, make sure to place them after the decimal place.
0.12 = 12 hundredths
34.12 would be the answer.
Answer:
∠Q ≈ 42.969, ∠P ≈ 52.03, QR ≈ 15.036
Step-by-step explanation:
Law of sines:
13/sin Q = 19/sin 85°
=> sin Q = 13 × sin 85°/19
=> Q = sin^-1 (13 × sin 85°/19)
=> Q ≈ 42.969
∠P=> 180 - 85 - 42.969 ≈ 52.03
QR/sin 52.03° = 19/sin 85°
=> QR = sin 52.03° × 19/sin 85°
=> QR ≈ 15.036
