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Norman knows that his first four test grades were 9191, 8989, 8787, and 7373. Use the formula x‾=x1+x2+…+xnnx‾=x1+x2+…+xnn to find Norman's grade on the fifth test if his test average is 83.683.6.

Norman knows that his first four test grades were 9191, 8989, 8787, and 7373. Use the formula x‾=x1+x2+…+xnnx‾=x1+x2+…+xnn to find Norman's grade on the fifth test if his test average is 83.683.6.

Algebra: Structure And Method, Book 1
Algebra: Structure And Method, Book 1
(REV)00th Edition
ISBN:9780395977224
Author:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Publisher:Richard G. Brown, Mary P. Dolciani, Robert H. Sorgenfrey, William L. Cole
Chapter4: Polynomials
Section4.2: Adding And Subtracting Polynomials
Problem 13P
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Norman knows that his first four test grades were 9191, 8989, 8787, and 7373. Use the formula x‾=x1+x2+…+xnnx‾=x1+x2+…+xnn to find Norman's grade on the fifth test if his test average is 83.683.6.

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