Use the vectors , , and

class="wirisformula" align="middle" style="vertical-align: middle;" data-wiris-created="true" varid="variable_id_field" variablename="impvar_4156526c5f3b4180b7bf9911b" />  to find the indicated quantity. State

whether the result is a vector or a scalar.

?



?



A. ; vector
B. ; vector
C. -58; scalar
D. -56; scalar
E. ; vector

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Answer: B

Mathematics

Collect like terms and write in descending order.-9m7 + 5m7

A. -4m7 B. Can't be simplified C. -4m14 D. -28m

Evaluate the expression for the values given.abc + b2; a = 5, b = -3, c = 7

A. -114 B. -96 C. -108 D. 114

Solve the problem.In one U.S. city, the quadratic function   models the median, or average, age, y, at which men were first married x years after 1900. In which year was this average age at a minimum? (Round to the nearest year.) What was the average age at first marriage for that year? (Round to the nearest tenth.)

A. 1961, 23.5 years old B. 1961, 50.4 years old C. 1953, 36 years old D. 1936, 50.4 years old

Solve by using the quadratic formula.x2 + 7x + 3 = 0

A.
B.
C.
D.