ABCD is a parallelogram. The diagonals of ABCD intersect at O.
B
с
b
OA = a and OB = b
o
a) Express the vector CÁ in terms of a.
a
A
D
b) Express the vector AB in terms of a and b.
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c) Express the vector BC in terms of a and b.

Which of the following is the equation that says that the product of a number and ten is equal to 20 percent of that number ? a) 10n= 2.0n b) 10+n=.20n c) n+ .20n=10 d) 10n=0.20n

Titus works at a hotel. part of his job is to keep the complimentary pitcher of water at least half full and always with ice. when he starts his shift, the water level shows 4 gallons, or 128 cups of water. as the shift progresses, he records the level of the water every 10 minutes. after 2 hours, he uses a regression calculator to compute an equation for the decrease in water. his equation is w –0.414t + 129.549, where t is the number of minutes and w is the level of water. according to the equation, after about how many minutes would the water level be less than or equal to 64 cups?

The length of a rectangle plus its width is 24 cm. the area is 143 square cm. what are the length and width of the rectangle?