Factor out the GCF from the polynomial. If the GCF is 1, write prime.7x2 + 21x - 28
A. 7(x2 + 3x - 4)
B. 7(x2 + 14x - 21)
C. 7x(x + 3 - 4)
D. 7(x2 + 21x - 28)
Answer: A
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List all the factors of each number.14
A. 2 + 7 B. 2 ? 9 C. 2 ? 8 D. 2 ? 7
Solve.While traveling in a car at a constant speed, the centrifugal acceleration passengers feel while the car is turning is inversely proportional to the radius of the turn. If the passengers feel an acceleration of 15 feet per second per second when the radius of the turn is 50 feet, find the acceleration the passengers feel when the radius of the turn is 150 feet.
A. 5 feet per second per second B. 8 feet per second per second C. 6 feet per second per second D. 7 feet per second per second
The graph below indicates the number of new cases of Chalk Dust Disease (CDD) diagnosed each month in the Mathland. Let T(t) represent the total number of new cases per month, F(t) the number of new cases per year among algebraists, G(t) the number of new cases per year among geometers, and t the number of years since January 1, 1990.
Estimate T(1) and interpret its meaning.
A. 140; In January, 1991, there were about 140 new cases of CDD diagnosed among algebraists. B. 1900; In January, 1991, there were about 1900 new cases of CDD diagnosed among geometers. C. 1900; In January, 1991, there were about 1900 new cases of CDD diagnosed. D. 1700; In January, 1991, there were about 1700 new cases of CDD diagnosed among geometers.
Write the expression in the standard form a + bi.5i5(1 + i3)
A. 5 - 5i B. -5 - 5i C. 5 + 5i D. -5 + 5i