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1) Simplify the following expressions:
a) 2a-7b + 15a2 + 11b
b) 16-0.25 8-1/3
c) 4x2(-2x)3/(-2(-x2)3)2
d) X-2(16-x2)(x(x-4))-1
2. Let m =17 and n=23. Evaluate the expression (m-n)2-2mn/m3-n2
3. Expand the following
a) 9(x-y+3)
b) abc(a2-b2+c2)
c) (r-s+t)(r+s-t)
To order meat to be grinded at the meat factory costs 1/10 of the meat as the fee. If you need 2 pounds of meat, how much meat will the meat factory have to grind?
Explain the main reasons why some groundwater sources that we use may be more vulnerable to chemical contamination than others. Next, suggest one (1) strategy that the government can take to reduce groundwater contamination.
What is the angle of elevation of the ladder?
why are graphs and charts used to represent information? what distinguishes a histogram from a bar chart? what are some
How can one prove that the 4 midpoints of the four sides of any quadrilateral form the vertices of a parallelogram using graph geometry (ie. x1, y1 etc. to denote the four vertices)?
suppose the position of a particle after t seconds is given by the following vector equationft 1 cos2pit sin2pitat t
A trapezoid with bases 2 m and 6 m is partially submerged vertically in water so that the top is 2 m above the surface and the bottom is 2 m below the surface.Express the hydrostatic force against one side of the plate as an integral and evaluate it...
A spring has a natural length of 26 cm. If a 25 N force is required to keep it stretched to a length of 39 cm, how much work W is required to stretch it from 26 cm to 28 cm? (Round your answer to the nearest hundredth.)
Find a 98% confidence interval for the true proportion of patients who experienced cotton mouth. Show your calculations and/or explain the process used to obtain the interval.
Determine whether it is possible to find a circumscribable, isoceles "true" trapezoid (in which the parallel sides are not congruent) that has each of the following properties. Justify the answer
A printer has a contract to print 100,000 invitations for a political candidate. He can run the invitations by using any number of metal printing plates from 1 to 20 on his press.
Find the dimensions of a rectangular fence that encloses an area of 81 feet that uses a minimum amount of material.
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