Write an algebraic equation and use it to solve the problem.How much pure acid should be mixed with 2 gallons of a 50% acid solution in order to get an 80% acid solution?
A. 1 gal
B. 5 gal
C. 8 gal
D. 3 gal
Answer: D
Mathematics
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Divide.
A. 1 B. -82 C. 0 D. undefined
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Complete the construction.Construct the perpendicular bisectors of the acute triangle.
What will be an ideal response?
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Use half-angle identities to find the exact value of the expression.sin 
A. 
B. - 
C. - 
D. 
Mathematics
Write an equation in slope-intercept form for the line shown.
A. y = -x - 1 B. y = x - 1 C. y = x + 1 D. y = -x + 1
Mathematics