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Makovka662 [10]
3 years ago
5

Please answer question below asap!!

Mathematics
1 answer:
Firlakuza [10]3 years ago
7 0

Answer: I hope this helps!:)

Step-by-step explanation:

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X squared minus 25 equals 0
Yuri [45]
x^2-25=0\\
x^2=25\\
x=\sqrt{25}\\ x=-5 \vee x=5

or

x^2-25=0\\
(x+5)(x-5)=0\\
x=-5 \vee x=5

7 0
4 years ago
The altitude a ( in feet) of a plane t minutes after lift off is given by a=3400t+600
Julli [10]

Answer:

  6 minutes

Step-by-step explanation:

'a' in the formula represents altitude in feet. You are told the altitude is 21000 feet, so put that into the formula:

   21000 = 3400t +600

You can solve this for t:

  20400 = 3400t . . . . . subtract 600 from both sides

  6 = t . . . . . . . . . . . . . . . divide both sides by 3400

The problem statement tells you that t represents minutes after lift off, so this solution means the altitude is 21000 feet 6 minutes after lift off.

The question is asking for the number of minutes after lift off that the plane reaches an altitude of 21000 feet, so this answers the question directly:

  The plane is at an altitude of 21000 feet 6 minutes after lift off.

4 0
3 years ago
What is 1+1? pls, I need help. its for school
LekaFEV [45]

Answer:

its 2 :)

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Use the distributive property to write each expression as an equivalent algebraic expression.
Nikitich [7]

I got you,

21. 4y+28

22. 8x+16

23. 6a+36

24. 12b+48

25. 5t-30

26. 3r-1

27. -1d+10

28.-5f+25

29. Idk

3 0
4 years ago
Read 2 more answers
Solve for x, with variables on both sides of equation. (Note: x is the same thing as 1x) You must show your work!
bagirrra123 [75]
Hello! We already have the equation set up, which is 9x = x + 4. Let's solve for x. Subtract x from both sides to get each side by itself x - x cancels out. 9x - x is 8x. That leaves 8x = 4. Now, divide each side by 8 to isolate the x. 8x/8 cancels out. 4/8 is 4/8 or 1/2 in cimplest form. Let's plug this value in and see if it works. 9 * 1/2 is 4 1/2. 1/2 + 4 is 4 1/2. 4 1/2 = 4 1/2. There. x = 1/2. 
6 0
4 years ago
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