I think its (<span><span>x^2)</span>+<span>5x</span></span>+<span>49</span>
We can create a formula first.
X will be the unknown number
840= 357+x
-357 -357
483 = x
Hope this helps
Answer:
-sqrt(3)/2
Step-by-step explanation:
Use double angle identity for sin(2x)
sin(2x)=2sin(x)cos(x)
We are given sin(x)=-1/2 so we already have so far that:
sin(2x)=2(-1/2)cos(x)
sin(2x)=-1*cos(x)
We just need to find cos(x).
x is in the fourth quadrant so cosine will be positive there
knowing the unit circle we should know that if sin(x)=-1/2 then cos(x)=sqrt(3)/2 while in 4th quadrant.
So the answer is sin(2x)=-1*sqrt(3)/2=-sqrt(3)/2
Hi again I helped you on your last question, I love helping people. Anyway here's the answer!
16. 0.188 rounded nearest hundredth = 0.19
17. 0.455 rounded nearest hundredth = 0.46
18. 0.538 rounded nearest hundredth = 0.54
19. 0.417 rounded nearest hundredth = 0.42
20. 2.833 rounded nearest hundredth = 2.83
21. 3.667 rounded nearest hundredth = 3.67
Probability of heart = 13/52
probability of nine = 4/52
you add the probability because of the word "or" but must subtract the probability of drawing the 9 hearts because it's counted twice. counted once in heart probability and once again in nine probability.
probability of 9 <3 = 1/52
probability of heart or nine:
13/52 + 4/52 - 1/52 = 16/52
simplified;
= 4/13
