Exam 7: Arithmetic Sequence: Common Difference and First n Terms

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Graph the ellipse. - (x+2)29+(y1)24=1\frac { ( x + 2 ) ^ { 2 } } { 9 } + \frac { ( y - 1 ) ^ { 2 } } { 4 } = 1  Graph the ellipse. - \frac { ( x + 2 ) ^ { 2 } } { 9 } + \frac { ( y - 1 ) ^ { 2 } } { 4 } = 1

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Write an equation for the hyperbola. -foci at (1053,7),(10+53,7);e=537( 10 - \sqrt { 53 } , 7 ) , ( 10 + \sqrt { 53 } , 7 ) ; e = \frac { \sqrt { 53 } } { 7 }

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Find the sum of the first 116 positive multiples of 5.

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Match the equation of a hyperbola with its description. - (y3)236(x1)264=1\frac { ( y - 3 ) ^ { 2 } } { 36 } - \frac { ( x - 1 ) ^ { 2 } } { 64 } = 1

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Find a general term an for the geometric sequence. - a1=15,r=5a _ { 1 } = - \frac { 1 } { 5 } , r = - 5

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A radio telescope has a parabolic surface. If it is 1 m deep and 20 m wide, how far is the focus from the vertex? A radio telescope has a parabolic surface. If it is 1 m deep and 20 m wide, how far is the focus from the vertex?

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 Suppose that C=0 in the equation Ax2+Bx+Cy2+Dy+E=0. What kind of graph does this equation have? \text { Suppose that } \mathrm { C } = 0 \text { in the equation } \mathrm { Ax } { } ^ { 2 } + \mathrm { Bx } + \mathrm { Cy } { } ^ { 2 } + \mathrm { Dy } + \mathrm { E } = 0 \text {. What kind of graph does this equation have? }

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Find all natural number values for n for which the given statement is false. - n!>10n\mathrm { n } ! > 10 \mathrm { n }

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Graph the equation. Give the domain and range. Identify whether the equation is a function. - y7=1+x236\frac { y } { 7 } = \sqrt { 1 + \frac { x ^ { 2 } } { 36 } }  Graph the equation. Give the domain and range. Identify whether the equation is a function. - \frac { y } { 7 } = \sqrt { 1 + \frac { x ^ { 2 } } { 36 } }

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Find a formula for the nth term of the arithmetic sequence shown in the graph. -Find a formula for the nth term of the arithmetic sequence shown in the graph. -

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Provide an appropriate response. -For 6, x, 12 to be an arithmetic sequence, x must be:

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List the elements in the sample space of the experiment. -An 8-sided die is rolled. The sides contain the numbers 1, 2, 3, 4, 5, 6, 7, 8. List the sample space of rolling one die.

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A signal is made by placing 3 flags, one above the other, on a flag pole. If there are 8 different flags available, how many possible signals can be flown?

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Find the eccentricity e e of the ellipse. - x2+25y2=25x ^ { 2 } + 25 y ^ { 2 } = 25

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How many ways can a class president, a class secretary, and a class treasurer be chosen from a group of 8 candidates?

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Find the sum of the first n terms of the following arithmetic sequence. - 91,174,257,;n=1091,174,257 , \ldots ; \mathrm { n } = 10

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Write an equation for the parabola with vertex at the origin. -Focus (5, 0)

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Provide an appropriate response. -Explain how to use the binomial theorem to expand ( (3a7b)n( 3 a - 7 b ) ^ { n }

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Evaluate the expression. - 13C7{ } _ { 13 } \mathrm { C } _ { 7 }

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Graph the function corresponding to the sequence defined. Use the graph to decide whether the sequence converges or diverges. - an=(191+n)1/na _ { n } = \left( \frac { 1 } { 91 } + n \right) ^ { 1 / n }

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