When are absolute values and the opposite of a rational number equal

If someone could explain to me how to solve this. I think the domain is all real numbers but not sure why.

Firlakuza [10]

Since |x+2| is either positive or zero for x = 2, the domain is set to be all real numbers.

//See the graph.

8 0

3 years ago

Can someone help me

Rufina [12.5K]

6x + 2x = 8x

so 8x is the right answer

7 0

2 years ago

A car travels for 4(t+3) hours at a constant speed of 10(t+3) km/h. If the total distance travelled by the car is 810 km, find t

IceJOKER [234]

Step-by-step explanation:

$\because \: time \times speed = distance \\ \therefore \: 4(t + 3) \times 10(t + 3) = 810 \\ \therefore \: 4(t + 3)^{2} = 81 \\ \therefore \: \{2(t + 3) \}^{2} = {9}^{2} \\ \therefore \: \{2(t + 3) \} = {9} \\ \therefore \: t + 3 = \frac{9}{2} \\ \therefore \: t = \frac{9}{2} - 3 \\ \therefore \: t = \frac{9 - 6}{2} \\ \therefore \: t = \frac{3}{2} \\ \therefore \: t = 1.5 \: hrs \\$

$\because \: time \times speed = distance \\ \therefore \: 4(t + 3) \times 10(t + 3) = 810 \\ \therefore \: 4(t + 3)^{2} = 81 \\ \therefore \: \{2(t + 3) \}^{2} = {9}^{2} \\ \therefore \: \{2(t + 3) \} = {9} \\ \therefore \: t + 3 = \frac{9}{2} \\ \therefore \: t = \frac{9}{2} - 3 \\ \therefore \: t = \frac{9 - 6}{2} \\ \therefore \: t = \frac{3}{2} \\ \therefore \: t = 1.5 \: hrs \\ speed \: of \: car = 10(t + 3) \\ \hspace{60 pt} = 10(1.5 + 3) \\ \hspace{60 pt}= 10 \times 4.5 \\ \red{ \boxed{ \bold{ \therefore \: speed \: of \: car = 45 \:km/ h}}} \\$

3 0

3 years ago

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Bezzdna [24]

Answer:

Hello

Step-by-step explanation:

2+2=22 facts lol

3 0

3 years ago

50 POINTS PLZ HELP NO LINKS This renewable energy project promises to provide numerous benefits to our state. These include an i

ivanzaharov [21]

Answer: 3 The pun on sense helps call attention to the economic soundness of the project.

Step-by-step explanation:

The underlined phrase is the last statement and it is a pun that is meant to show that the plan is a good one because it will both increase jobs and is good for the environment which means that it is sound from both an economic and an environmental perspective.

In using the pun, the entire argument for the project was summarized to show the basic benefits of the plan and show how it would benefit the people.

7 0

3 years ago