3x+9-7x=x+10+X -4x+9= 2x+10
-6x+9= 10
-6x=1
1
x--
X=--
6
the subtraction property of equality
the multiplication property of equality
combining like terms on one side of the equation
the distributive property

7! = 7×6×5×4×3×2

3! = 3× 2

as 7! is multiple of 3! because 7! contains 3! that is 3× 2 as factor

so 7! /(3! ) = 7× 6× 5× 4

= 42 × 20

= 840

its b) 840✌✌✌

dhruv⭐

hope it you

step-by-step explanation:

sin(7pi/6 - pi/3)  

= sin(7pi/6 - 2pi/6)  

= sin(5pi/6)  

= sin(pi - pi/6)  

= sin(pi/6)  

= 1/2  

sin 7pi/6 - sin pi/3  

= sin (pi + pi/6) - sin pi/3  

= -sin pi/6 - sin pi/3  

= -1/2 - sqrt(3)/2  

= -(1+sqrt(3))2

25/6 hope it : )

step-by-step explanation:

42.4 6th grade students prefer hip hop

step-by-step explanation:

40 percent of 106 = 42.4