Answer:
θ = π n + π/2 for n element Z
Step-by-step explanation:
Solve for θ:
1 + 2 cos(2 θ) + cos^2(2 θ) = 0
Write the left hand side as a square:
(cos(2 θ) + 1)^2 = 0
Take the square root of both sides:
cos(2 θ) + 1 = 0
Subtract 1 from both sides:
cos(2 θ) = -1
Take the inverse cosine of both sides:
2 θ = 2 π n + π for n element Z
Divide both sides by 2:
Answer: θ = π n + π/2 for n element Z
5x100+5x90+5x8 and there you go all you need to do is do this problem the right way and you will get the right answer
Answer:
The discrimant of this equation is 144.
Step-by-step explanation:
First you have to move all the variables to one side to make the equation/expression into 0 by substracting 8x² to both sides :
9x² + 14x + 13 = 8x²
9x² + 14x + 13 - 8x² = 8x² - 8x²
x² + 14x + 13 = 0
It is given that the formula of discriminant is, D = b² - 4ac where a&b&c represent the number of the equation, ax²+bx+c = 0 :
x² + 14x + 13 = 0
D = b² - 4ac
= 14² - 4(1)(13)
= 196 - 52
= 144
Hello!
First you have to find what percentage prefers oranges with the current data
Add all the numbers up
150 + 220 + 235 + 185 = 790
Divide the amount that preferred oranges by the total amount of people that answered
185 / 790 = 0.23417721519
Since this is a long decimal we can multiply the fraction by the amount we want to know
185 / 790 * 2370 = 555
The answer is 555 people
Hope this helps!
Answer:
a
Step-by-step explanation:
