Use the substitution method to solve the system of equations. 5x+ 2y= 1
y= -x+ 2
OA (-2, 4)
O B. (-1, 3)
Oc. (-3, 8)
OD. (-3, 5)

Given the following statements, which is the best

In δabc, if the length of side b is 3 centimeters and the measures of ∠b and ∠c are 45° and 60°, respectively, what is the length of side c to two decimal places?

Select the correct answer. what is the exact value of sin (157.5°)? a. 'sqrt(2 - sqrt(2))/2 b. *"-"'sqrt(2 + sqrt(2))/29 c.'sqrt(2 + sqrt(2))/4" d. "-"sqrt(2 + sqrt(2))/4)