Find the absolute value of the number.
Fill in the blank(s) with the appropriate word(s).
12
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Write the complex number in polar form. Express the argument in degrees, rounded to the nearest tenth, if necessary.-2i
A. 2(cos 90° + i sin 90°) B. 2(cos 0° + i sin 0°) C. 2(cos 270° + i sin 270°) D. 2(cos 180° + i sin 180°)
A tank initially contains 60 gal of brine, in which 10 lb of salt is dissolved. Brine containing 2 lb of dissolved salt per gallon flows into the tank at the rate of 4 gal/min, and the well-stirred mixture flows out of the tank at the same rate. How much salt is present in the tank at the end of 10 min? ? Round the answer to the nearest tenth, if necessary. ? __________ lb
Fill in the blank(s) with the appropriate word(s).
Find the product.
What will be an ideal response?
When the 3 angle-bisectors of a triangle are constructed, what appears to happen?
What will be an ideal response?