Answer: We will see in the next example how using the Quadratic Formula to solve an equation with a perfect square also gives just one solution. Solve 4{x}^{2}-20x=-25
Step-by-step explanation:
The coterminal angle for the -4π/5 are -14π/5 , 6π/5 and reference angle is π/5 respectively.
<h3>What is coterminal angles?</h3>
Two different angles that have the identical starting and ending edges termed coterminal angles however, since one angle measured clockwise and the other determined counterclockwise, the angles' terminal sides have completed distinct entire rotations.
We have an angle:
-4π/5
To find the coterminal angle, add and subtract by 2π in the angle -4π/5
Coterminal angle:
= -4π/5 - 2π
= -14π/5
= -4π/5 + 2π
= 6π/5
Reference angle:
= π - 4π/5 (as the angle lies in the second quadrant)
= π/5
Thus, the coterminal angle for the -4π/5 are -14π/5 , 6π/5 and reference angle is π/5 respectively.
Learn more about the coterminal angles here:
brainly.com/question/23093580
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Answer:
Step-by-step explanation:
Solving our equation
r = 580 / ( 1432 × 6 ) = 0.06750466
r = 0.06750466
converting r decimal to a percentage
R = 0.06750466 * 100 = 6.7505%/year
The interest rate required to
accumulate simple interest of $ 580.00
from a principal of $ 1,432.00
over 6 years is 6.7505% per year.
Answer:
7
Step-by-step explanation:
Just notice that correct answers are whole numbers.
And, to win the game,Maria must have a score less than -80, it means she needs to score al least -85 ( it can not be -81, -82.. because 1 correct answer score -5, only multiples of -5 are accepted)
So, we take: 
= 7 correct answers to win the game.
Hope it will find you well.
