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soldier1979 [14.2K]
3 years ago
11

3x= 5+7x solve for x

Mathematics
1 answer:
dalvyx [7]3 years ago
3 0

Answer:

x = -5/4

Step-by-step explanation:

3x= 5+7x    (subtract 7x from both sides)

3x - 7x = 5

-4x = 5    (divide both sides by -4)

x = 5/(-4)

x = -5/4

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Write the inverse of the function f(x) = 5x +3 ?
Ilia_Sergeevich [38]

Answer: f(x^-1) = x/5 - 3/5

Step-by-step explanation:

1. Replace f(x) with y

2. Swap the positions of x and y to make x = 5y + 3

3. Solve for y by subtracting 3 from both sides and dividing each side by 5

7 0
3 years ago
Please answer i need help
labwork [276]

Answer:

first answer is 9.84

Step-by-step explanation:

9.84 is the square root of 97, rounded to the nearest hundredth.

the legs measure 9 x 9 and 4 x 4 = 81 and 16.

81 + 16 = 97, so your answer is the square root of 27, which rounded to the nearest hundredth, equals 9.84. Rounding towards the nearest whole, 10 would be your best bet.

hope this helps!!

3 0
3 years ago
State if the given functions are inverses. f(x) = 1/x + 3 g(x) = 4/x + 2
Stolb23 [73]

Answer:

  they are not inverses

Step-by-step explanation:

f(1) = 1/1 +3 = 1 +3 = 4

g(4) = 4/4 +2 = 1 +2 = 3 ≠ 1

If the functions were inverses, we would have g(f(1)) = 1, which we do not.

The given functions  are not inverses.

_____

The same would be true if your functions were

  f(x) = 1/(x+3) and g(x) = 4/(x+2)

  f(1) = 1/(1+3) = 1/4

  g(1/4) = 4/(1/4 +2) = 4/(9/4) = 16/9 ≠ 1

6 0
4 years ago
2cosx-3=0 cách giải như thế nào
Masteriza [31]

Answer:

Solution does not exist.

Step-by-step explanation:

2cosx-3=0

2cosx=3

cosx=3/2

Solution does not exist.

7 0
3 years ago
Find the length of the<br> missing side of the triangle<br> to the nearest tenth.
babymother [125]
Hey! So you’re gonna need to use the Pythagorean Theorem (a^2 + b^2 = c^2).
You’re looking for one of the legs here, so after inputting the values your equations should look like this: 6^2 + b^2 = 10^2.
Next, find what the numbers squared are: 36 + b^2 = 100.
Then, isolate the variable: b^2 = 64.
Lastly, square root both sides: √b^2 = √64.
You should find the answer is 8.
7 0
3 years ago
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