Identify the degree and leading coefficient of the polynomial.f(x) = -20x5 + 9x4 + 7

A. Degree: 9; leading coefficient: -20
B. Degree: 5; leading coefficient: -20
C. Degree: 10; leading coefficient: -20
D. Degree: -20; leading coefficient: 5


Answer: B

Mathematics

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Write the expression as a logarithm of a single expression. Assume that variables represent positive numbers.log38 - log37

A. log3
B. log31 
C. log6
D. log3

Mathematics

In the figure below, R = 3.3 Kê and XC = 2.2 Kê. Find é.



a. 41.8ø
b. 33.7ø
c. 48.2ø
d. 53.1ø
e. 67.4ø

Mathematics

A formula is given along with the values of all but one of the variables in the formula. Find the value of the variable not given. Round to the nearest hundredth where necessary.A = ?r2; r = 2, ? = 3.14

A. 12.56 B. 19.72 C. 6.28 D. 5.14

Mathematics

Solve.The temperature at 5:00 was -4°C. Four hours later, it was -12°C. What was the change in temperature?

A. -16°C B. 16°C C. 8°C D. -8°C

Mathematics