Use a calculator to find the approximate value of the expression rounded to two decimal places.cos 80°
A. 0.17
B. -0.11
C. 0.01
D. 0.29
Answer: A
Mathematics
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Find the LCD for the given fractions.
and 
A. 4 B. 48 C. 16 D. 12
Mathematics
Collect like terms.6x - 2 + 3x + 1
A. 9x - 1 B. 3x - 1 C. (6x + 3x) + (-2 + 1) D. 8
Mathematics
Solve the problem.The length of a rectangle is three inches more than the width. The area of the rectangle is 340 inches. Find the width of the rectangle.
A. 17 in. B. 20 in. C. 10 in. D. 9 in.
Mathematics
Determine whether the expression is a polynomial. If it is, state how many terms and variables the polynomial contains. Then state its degree.5m4n4 + 3mn9 - 7
A. Yes; 3; 2; 9 B. No C. Yes; 3; 3; 18 D. Yes; 3; 2; 10
Mathematics