PLEASE HELP ME

Given an isosceles triangle with legs measuring 10 inches and base measuring 18 inches, what is the cosine of one of the base angles?

A.0.900
B.0.555
C.0.316
D.0.100
E.1.800

Tiffany drives 285,120 feet before lunch and 628,320 feet after lunch. about how many kilometers does she drive all together

Consider this equation. |y + 6| = 2 what can be concluded of the equation? check all that apply. there will be one solution. there will be two solutions. the solution to –(y + 6) = 2 will be also be a solution to the given absolute value equation. the solution(s) will be the number(s) on the number line 2 units away from –6. the value of y must be positive since the variable is inside absolute value signs.

Find the solution(s) to the system of equations. select all that apply y=x^2-1 y=2x-2