Answer:
3
Step-by-step explanation:
hey so we need to make the equations equal to one another for it to have infinitely many solutions
1)distribute the 3
3x+3=3x+_
looking at this we can concur that the missing number is 3. You can check by plugging in the 3 into the equation.
so
3x+3=3x+3
this is true, so 3 is the answer
hope this helps!
D 3..
We need to make the left side and right side identical:
Left side:
3(x + 1) = 3x + 3 so the missing number is 3.
d. -7/25
π<θ<3π/2 in third quadrant
tanθ = 4/3
sinθ = - 4/5
cosθ = - 3/5
cos 2θ = cos²θ - sin²θ = (- 3/5)² - (- 4/5)² = 9/25 - 16/25 = - 7/25
b
