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

How would I solve 15+y=30?

Select the sentence that correctly uses commas. Group of answer choices My dad likes to mow the grass, spread the weed-killer, and plant the flowers. My dad, l

what's the difference between artificial and natural radioisotopes?

What does standard of living mean in 1984

The cell produces organelles during

They form a wide band called a Asteroids _____

what note is a whole step below C flat ?

The figure shows the dimensions of the side of a house. Find the area of the side of the house.

Evaluate the following expression “the quotient of 18 and 2”

A dam is built in a remote area to provide electricity to nearby towns. What is an unlikely effect of the dam? decreased farming downstream from the inferti