Evaluate the binomial coefficient.

A. 7! 
B.
C. 7 
D. 1 


Answer: C

Mathematics

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5xy + 20x + 7y + 28

A. (5x + y)(7y + 4) B. (5x + 4)(y + 7) C. (5x + 7y)(y + 4) D. (5x + 7)(y + 4)

Mathematics

Solve the problem by using two equations with two variables.Jamil always throws loose change into a pencil holder on his desk and takes it out every two weeks. This time it is all nickels and dimes. There are 8 times as many dimes as nickels, and the value of the dimes is $7.50 more than the value of the nickels. How many nickels and dimes does Jamil have?

A. 11 nickels and 88 dimes B. 9 nickels and 72 dimes C. 10 nickels and 80 dimes D. 80 nickels and 10 dimes

Mathematics

Solve.On an architect's blueprint, 1 inch corresponds to 4 feet. Find the length of a wall represented by a line  inches long on the blueprint. Round to the nearest tenth if necessary.

A. 56.3 ft B. 17.8 ft C. 7.5 ft D. 9 ft

Mathematics

Use the information given about the angle ?, 0 ? ? ? 2?, to find the exact value of the indicated trigonometric function.sin ? = , tan ? < 0Find sin(2?).

A.
B.
C.
D. - 

Mathematics