Solve the problem.The width of a rectangle is 6 kilometers less than twice its length. If its area is 140 square kilometers, find the dimensions of the rectangle.

A. length = 3 km, width =  km
B. length = 7 km, width = 8 km
C. length = 10 km, width = 14 km
D. width = 10 km, length = 14 km


Answer: C

Mathematics

You might also like to view...

Write the perimeter of the figure as an algebraic expression and simplify.

A. 4a + 2b B. 4a + 7b C. 3a + 7b D. 3a + 8b

Mathematics

Find dy/dt.y = t8(t4 + 1)4

A. t8(t4 + 1)3(24t3 + 8) B. t7(t4 + 1)3(24t4 + 8) C. 8t7(t4 + 1)3(16t4 + 1) D. 128t30(t4 + 1)3

Mathematics

Convert the angle to decimal degrees and round to the nearest thousandth of a degree.81°17'50''

A. 81.357 B. 81.297 C. 81.307 D. 81.257

Mathematics

Find the indicated trig function of ?, if ? is an angle in standard position with the terminal side defined by the given point.(15, 20); Find sin ?.

A.
B.
C.
D.

Mathematics