Which of the following is the value of sin^-1(square root2/2)

Phillip had some bricks. he stacked them in 6 equal piles. which expression shows the number of bricks phillip put in each pile? let the variable m stand for the unknown number of bricks. m + 6 m÷6    m−6    6m

Find the value of the variable and the length of each secant segment.

What is the explicit formula for this sequence -7, -4, -1, 2, 5