F'biết f(x)= cosx  2  1+sin x

If x + 10 = 70, what is x? a. 40 b. 50 c. 60 d. 70 e. 80

What is the perimeter of square abcd? units units 28 units 37 units

Sundar used linear combination to solve the system of equations shown. he did so by multiplying the first equation by 5 and the second equation by another number to eliminate the y-terms. what number did sundar multiply the second equation by? 2x+9y=41 3x+5y=36