Find the area of an equilateral triangle whose value is 18 cm​

What is the value of x in the equation 2(x-4) = 4(2x + 1)?

Non-euclidean geometry was discovered when, in seeking cleaner alternatives to the fifth postulate, it was found that the negation could also be true a. true b.false

The coordinate grid shows a pentagon. the pentagon is translated 3 units to the right and 5 units up to create a new pentagon. what is the rule for the location of the new pentagon?