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

2) data from the national health interview survey suggests that _____ percent of adults never engage in any exercise, sports, or physically active hobbies. a.

what area of social services is slowly becoming a major for-profit industry

what was taylor's destination when she left home? a.to go as far as her car would take her b.to go to the place where the ocean met the land c.to go to the cher

from your knowledge of world history during the late 19th century do you see a relation between the imoressionist styles and thw major events of that period

definition of diverse nation

106 percent of $__ is 7.95

what is fiction element

What essential nutrient is found in meats and beans? a. carbohydrates b. protein c. fats d. vitamin c

2 hours and 10 minutes converted into seconds is _____. 78,000 s 7,800 s 6,400 s 2,160 s

which of the following is a polynomial with roots 4, -5 and 7?