Simplify the expression using the appropriate identities. (Do not use calculator)

sin 9° cos 10° - cos 9º sin 10° =

What is the answer to 8x+2 (y+13) = 10

Which is closest to 1? A) 1.2 B) 0.1 C) 0.01 D) 0.9

The number is greater than 0 and less than 0.75

F = [-2 0] [0 8] [2 0] C = [12 0 3/2] [1 - 6 7 ] what is fc?

Which system of equations can be used to find the roots of the equation 4x2x3 + 2x?

When the radius of a circle is multiplied by a factor of 2 22, by what factor will the area of the circle change?

What is 0.0009999 closest to? 0, 1/2, or 1

A sum of scalar multiples of two or more vectors (such as c 1 Bold u plus c 2 Bold v plus c 3 Bold wc1u+c2v+c3w , where c Subscript ici are scalars) is called a linear combination of the vectors.

50) The first year Beth worked she earned n. The second year she earned 500 more than twice what she made the first year. The third year she earned 500 less than twice what she made the second year.

What is the sum of x + y when x = - 2.7 and y = 5.2? A. -7.9 B. -2.5 C. 2.5 D. 7.9