415. In the proportion , which are the extremes?12%3D21a. 4 and 7b. 4 and 12C. 4 and 21d. 7 and 122x+3y16. If =2=find d.2а. 5b. 9с. 13d. 1517. If a: b = 5: 6, find 2a-3b : a + 2b.a. 2:17b. 8: 12с. 2:518. What properties of proportion is being illustrated in the given:d. 1:22a+32a+931a. Sum Propertyb. Inverse PropertyC. Addition Property3d. Subtraction Propertya+14+a

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Answered: 12 15. In the proportion =, which are…

Elementary Geometry For College Students, 7e

7th Edition

ISBN:9781337614085

Author:Alexander, Daniel C.; Koeberlein, Geralyn M.

Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.

ChapterP: Preliminary Concepts

SectionP.CT: Test

Problem 1CT

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12 15. In the proportion =, which are the extremes? 21 %3D a. 4 and 7 b. 4 and 12 C. 4 and 21 d. 7 and 12