The law of cosines is a2+b2 - 2abcosC = c^2 find the value of 2abcosC ... A. 40 B. - 40 C. 37 D. 20

(The sides are 2,4, and 5; A to B is 2, B to C is 4, and A to C is 5.)

Annie has $1,400 in the bank. she takes out $700 for a new computer and then withdraws $120 each week for groceries. how many weeks can she withdraw grocery money?

Write the conversion factor for seconds to minutes. Use the factor to convert 135 seconds to minutes.

What equation is graphed in this figure

Find the output, h, when the input, x, is - 18 h = 17+x/6

5x-2y=-2 Slope and y-intercept

If the denominator of 4/7 is increased by a number and the numerator is doubled, the result is 1. Find the number.

mauricio estimates that the first module of the project could be completed in as few as 15 days or could take as many as 25 days but most likely will requrie 20 days. what is the 20 day estimate called?

A worker at a frozen yogurt store has 2 3/4 cups of frozen yogurt to give to customers as samples. the worker places 1/16 cup of frozen yogurt in each sample. How many samples can the worker give using all the frozen yogurt?

13*[4 (10^3) + 2 (10^2) + 6 (10^-1)

If quadrilateral ABCD is similar to quadrilateral RSTU, which angle corresponds to? C?