Mathematics

Quadratic-Equations

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Question

The sun of n terms in the sequence 23, 19, 15, 11, ….. is given by the rule S = 25n – 2n². How many terms must we add to make a sum of 72?

7
2
8
25

The correct answer is: 8

Find the turning point of $y equals open parentheses x minus 1 half close parentheses squared plus 1 third text . end text$

MathematicsQuadratic-Equations

Quadratic-Equations

Mathematics

Solve and find sum of roots of x² + x – 20 = 0

MathematicsQuadratic-Equations

Quadratic-Equations

Mathematics

Solve x² + 8x + 3 = 0 through completing the square method.

MathematicsQuadratic-Equations

Quadratic-Equations

Mathematics

The product of a certain whole number and four more than that number is 140. Find the number.

MathematicsQuadratic-Equations

Quadratic-Equations

Mathematics

Number of solutions to the graph of quadratic function.

MathematicsQuadratic-Equations

Quadratic-Equations

Mathematics

Solve $fraction numerator x plus 4 over denominator 2 end fraction minus fraction numerator 3 over denominator x minus 3 end fraction equals 1$

MathematicsQuadratic-Equations

Quadratic-Equations

Mathematics

Solve 7x² – 56x + 49 = 0.

MathematicsQuadratic-Equations

Quadratic-Equations

Mathematics

Solve 5x² – 125 = 0.

MathematicsQuadratic-Equations

Quadratic-Equations

Mathematics

Solve x² – 7x = 18.

MathematicsQuadratic-Equations

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The sun of n terms in the sequence 23, 19, 15, 11, ….. is given by the rule S = 25n – 2n2. How many terms must we add to make a sum of 72?

72825

The correct answer is: 8

Related Questions to study

Number of solutions to the graph of quadratic function.

Number of solutions to the graph of quadratic function.

Solve

Solve

Solve 6x2 – 7x – 10 = 0.

Solve 6x2 – 7x – 10 = 0.

Solve 7x2 = 343.

Solve 7x2 = 343.

Solve x2 – 4x = 21.

Solve x2 – 4x = 21.

Find the axis of symmetry of y = (x – 3)2 + 3.

Find the axis of symmetry of y = (x – 3)2 + 3.

Find the turning point of

Find the turning point of

Solve and find sum of roots of x2 + x – 20 = 0

Solve and find sum of roots of x2 + x – 20 = 0

Solve x2 + 8x + 3 = 0 through completing the square method.

Solve x2 + 8x + 3 = 0 through completing the square method.

The product of a certain whole number and four more than that number is 140. Find the number.

The product of a certain whole number and four more than that number is 140. Find the number.

Number of solutions to the graph of quadratic function.

Number of solutions to the graph of quadratic function.

Solve

Solve

Solve 7x2 – 56x + 49 = 0.

Solve 7x2 – 56x + 49 = 0.

Solve 5x2 – 125 = 0.

Solve 5x2 – 125 = 0.

Solve x2 – 7x = 18.

Solve x2 – 7x = 18.

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The sun of n terms in the sequence 23, 19, 15, 11, ….. is given by the rule S = 25n – 2n². How many terms must we add to make a sum of 72?

7
2
8
25

Solve $x plus 1 over x equals 13 over 6$

Solve $x plus 1 over x equals 13 over 6$

Solve 6x² – 7x – 10 = 0.

Solve 6x² – 7x – 10 = 0.

Solve 7x² = 343.

Solve 7x² = 343.

Solve x² – 4x = 21.

Solve x² – 4x = 21.

Find the axis of symmetry of y = (x – 3)² + 3.

Find the axis of symmetry of y = (x – 3)² + 3.

Find the turning point of $y equals open parentheses x minus 1 half close parentheses squared plus 1 third text . end text$

Find the turning point of $y equals open parentheses x minus 1 half close parentheses squared plus 1 third text . end text$

Solve and find sum of roots of x² + x – 20 = 0

Solve and find sum of roots of x² + x – 20 = 0

Solve x² + 8x + 3 = 0 through completing the square method.

Solve x² + 8x + 3 = 0 through completing the square method.

Solve $fraction numerator x plus 4 over denominator 2 end fraction minus fraction numerator 3 over denominator x minus 3 end fraction equals 1$

Solve $fraction numerator x plus 4 over denominator 2 end fraction minus fraction numerator 3 over denominator x minus 3 end fraction equals 1$

Solve 7x² – 56x + 49 = 0.

Solve 7x² – 56x + 49 = 0.

Solve 5x² – 125 = 0.

Solve 5x² – 125 = 0.

Solve x² – 7x = 18.

Solve x² – 7x = 18.