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irga5000 [103]
3 years ago
8

Solve the equation sqrt x+3+4 =5 for the variable. Show each step of your solution process.

Mathematics
1 answer:
Keith_Richards [23]3 years ago
3 0

Domain:\\x+3\geq0\to x\geq-3\\\\\sqrt{x+3}+4=5\ \ \ \ |-4\\\\\sqrt{x+3}=1\ \ \ |^2\\\\(\sqrt{x+3})^2=\pm1^2\\\\x+3=\pm1\ \ \ \ |-3\\\\x=-4\notin D\ \vee\ x=-2\in D\\\\Answer:\ \boxed{x=-2}

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A plane takes off from an airport on a bearing of 270° and travels at a speed of 320 mph. after sometime and flight, space the p
ratelena [41]

The speed of the plane after it encounters the wind is C.285mph

<h3>How to calculate the speed of the plane when it encounters the wind?</h3>

Since the plane takes off from an airport on a bearing of 270° and travels at a speed of 320 mph it's velocity is v = (320cos270°)i + (320sin270°)j

= (320 × 0)i + (320 × -1)j

= 0i - 320j

= - 320j mph

Also, the plane encounters a 35 mph wind blowing directly north. The velocity of the wind is v' = 35j mph

So, the velocity of the plane after it encounters the wind is the resultant velocity, V = v + v'

= -320j mph + 35j mph

= -285j mph

So, the speed of the plane after it encounters the wind is the magnitude of V = |-285j| mph

= 285 mph

So, the speed of the plane after it encounters the wind is C.285mph

Learn more about speed of plane here:

brainly.com/question/3387746

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8 0
2 years ago
Can someone help me with my math homework please please please
german

Answer:

  25

Step-by-step explanation:

Put the numbers where the corresponding letters are, and do the arithmetic.

  3² +3·8 +2 -2·5

  = 9 +24 +2 -10

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7 0
3 years ago
My sister needs some help with her homework. Can someone lend her a hand?
Neporo4naja [7]

Answer:

600 = 10 x 60

Step-by-step explanation:

If you do 10 x 60 or 60 x 10 it'll equal 600, that's what the questons is looking for so the way it'd be written is:

6 hundreds is 10 times as much as 600.

600 = 10 x 60

Hopefully this helps! I hope you and your sister have a blessed day!

5 0
1 year ago
Read 2 more answers
I JUST NEED THESE 3 QUESTIONS
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Answer:  

 

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Answer:  Amplitude is 80 ft, period is 60 ft.

 

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Answer:  y = 80cos(x*π/30)+80

 

3.     As the band begins to play, band members move away from the edges, and the curve reverses so that the function begins at the far left by decreasing. Darla does not move. The sine curve is now half as tall as it was originally. What is the equation of the sine curve representing the position of the band members after these changes?

Answer: y = 40cos(x*π/30)+80

 

4.     Next, the entire band moves closer to the edge of the football field so that the sine curve is in the lower half of the football field from Edna’s vantage point. What is the equation of the sine curve representing the position of the band members after these changes?

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Step-by-step explanation:

8 0
3 years ago
What is 8^3 simplyfied
prisoha [69]

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5 0
3 years ago
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