Solve the Problem $\frac { 1 } { 9 } h r$

question 104

Multiple Choice

Solve the problem.
-Martha can rake the leaves in her yard in 2 hours. Her brother can do the job in 7 hours. How long will it take them to do the job working together?

• A) \(\frac { 1 } { 9 } h r\)
• B) \(\frac { 14 } { 5 } \mathrm { hr }\)
• C) \(\frac { 1 } { 14 } \mathrm { hr }\)
• D) \(\frac { 14 } { 9 } \mathrm { hr }\)

Document clinical findings accurately.

Understand specific assessment techniques for particular conditions or ages.

Understand the terminology and definitions used in accounting practices specific to accounts payable, accounts receivable, and general office financial management.

Calculate and interpret financial ratios, such as the gross collection ratio and the accounts receivable (A/R) ratio.

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Definitions:

Pollen Grains

Microscopic structures produced by the male parts of plants, responsible for carrying male gametes to the female part for fertilization.

Progymnosperms

An extinct group of plants that are considered to be the ancestors of both gymnosperms and angiosperms, showing features typical of both groups.

Megaphylls

Leaves with a highly branched vascular system, characteristic of most modern plants, contrasted with microphylls of some ancient lineages.

Woody Tissue

Plant tissue composed mainly of xylem, providing structural support and conduction of water and nutrients; commonly found in trees and shrubs.