What is the perimeter of this equilateral triangle?

Equilateral triangle with one side labeled 18 centimeters.

centimeters

All of the following are irrational except √1 √1.44 √2 √4

The fourth term of an arithmetic progression is 3. The sum of the fifth and seventh terms is - 10. Find the common difference and the first term. Tq

The LCD of and a different rational expression is 24r. The numerator and denominator of should be multiplied by in order to create an equivalent expression with a common denominator.

What is the mean absolute deviation of the data set? 12, 15, 7, 4, 9, 10, 9, 6 1.5 2.5 4.3 9.0

5.87 rounded to the nearest tenth

Eva earned the following test scores in science: 82, 100, 96, 90, 91 Ms. Wade entered the next score as 0 because Eva was absent on test day and hadn't had a chance to make up the test.

Choose one of the factors of x^15 - 64. a. x^5 - 4 b. x^10 - 4x^5 + 16 c. x^10 - 4 d. x^15 + 8x + 16

Proportion n/11 = 40/55

The value of y varies directly with x, and y = 4 when x = 10. find y when x = 1. a.-2.5 b. 2.5 c. 0.4 d.-0.4

The height of a cylinder is 6 inches. The diameter of the circular base of the figure is 10 inches. What is the approximate surface area of the figure? Use 3.14 for π and round to the nearest whole number.