Hey !!!
sinx = 3/5 ( given )
We know a formula of cos2x = ( 1 - 2sin²x)
putting the value of sinx on value of cos2x = ( 1 - 2sin²x)
hence,
we get
cos2x = ( 1 - 2sin²x )
=> [1 - 2 × ( 3/5 )² ]
=> [ 1 - 2 × 9 /25 )
=> [ 25 - 18 /25 ]
=> 7/25 Answer ✔
Since there is a variable, there are infinitely many solutions.
Answer:
I think 60.00 is the answer
Step-by-step explanation:
hope you like my answer
49 x 0.35=17.15. There are 17 classrooms total or 17.15
Chang is incorrect because his factoring results in -21 instead of positive 21.
Benjamin is incorrect because his factoring results in positive 9x instead of -9x.
Habib's answer is incorrect because 4 + 12x is not equivalent to the expression above.
A correct factor would be: 4-3(3x-7)
