Solve the equation ln(x - 3) + ln(x + 1) = ln(x + 7)

x = 5, or x = ???

The ratios 3: 9, 4: 12, 5: 15, and 6: 18 are a pattern of equivalent ratios in the ratio table. which is another ratio in this pattern?

Cos^2x+cos^2(120°+x)+cos^2(120°-x)i need this asap. pls me

Acircle has a radius of 12.6cm what is the exact length of an arc formed by a central angle measuring 120