In ΔABC, a = 2, b = 3, and c = 4. Find the value of cosC. Is the triangle acute, right, or obtuse?

The area of a sector of a circle with a central angle of 110° is 74 m2. find the radius of the circle. (round your answer to one decimal place.)

Factor the following polynomial completely. -x2 y2 + x4 + 4y 2 - 4x2

Ms. lindt had 3,095.63 in her checking account she wrote a check to pay for two airlines tickets that totaled 1,348.92 how much money does ms lindt have left in her checking account

1. To decide if 9 cups are greater than 4 pints, the first step to set up a proportion. Which of the following porportions would work? A. 4 pints/9 cups = 2 pints/x B. 2 cups/1 pints = 9 cups/x C. 2 pints/1 cup = 4 pints/x D.

What is the radius of a circle whose area is 36π cm^2 (to the second power)

the expressions 4b-6 and 2b+4 represent the lengths of the diagonals of parallelogram wxyz for what value of b is wxyz a rectangle

2x+y=12 and 2x+6y=-8

A stretch of highway that is 12 1 4 12 4 1 12, start fraction, 1, divided by, 4, end fraction kilometers long has speed limit signs every 7 8 8 7 start fraction, 7, divided by, 8, end fraction of a kilometer.

What percentage of 250 is 25?

Write four irrational number between 0.1 and 0.2