liamhallowell28 liamhallowell28

03-02-2019
Mathematics

contestada

For what values of the variable x is the expression square root of 7x+14+ square root of 7-x a real number?

Respuesta :

mathecoach mathecoach

03-02-2019

Answer:

√(7·x + 14) + √(7 - x)

7·x + 14 ≥ 0 --> x ≥ -2

7 - x ≥ 0 --> x ≤ 7

x ∈ [-2 ; 7]

Answer Link

Otras preguntas

identify the stage of mitosis in which a cell spends the most time

How are ethnic and religious conflicts related to problems of global security ?

Gretchen made $56,750 last year. She paid $1,200 in student loan interest and made a $3,000 contribution to her IRA. On her federal tax return, she will claim $

In 12 hours, the temperature fell steadily from 17degrees to -7degrees f. what was the average change in temperature per hour?

What is 25 divided by 1280

What types of individuals in a population are represented by the two ends of a bell curve ?

Video-sharing sites such as youtube and vimeo provide a place to post short videos called clips, true or false?

2 employees share 1 job. A girl works Monday Wednesday and Fridays. A boy works Tuesdays and Thursdays. The job pays an annual salary of $28,602. What annual sa

list four clues that suggest a chemical change is taking place

What kind of scholar studies objects left behind by humans?