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GuDViN [60]
3 years ago
8

Help me! Solve the equation. −2/3x+3/7=1/2

Mathematics
1 answer:
alexira [117]3 years ago
5 0
-2/3x+3/7=0.5
-2/3x+3/7=5/10
-2/3x+3/7=1/2
-42 x 2x +6 x 3=21
-28x+18=21
-28x=21-18
-28x=3
x=-3/28
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Will markk the brainliest
ivolga24 [154]

Answer:

  1. the range of f^-1(x) is {10, 20, 30}.

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  3. n = 8

Step-by-step explanation:

1. The domain of a function is the range of its inverse, and vice versa. The range of f^-1(x) is {10, 20, 30}.

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2. See above. The domain and range are swapped between a function and its inverse. That means function point (3, 0) will correspond to inverse function point (0, 3).

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3. The n-th term of an arithmetic sequence is given by ...

  an = a1 +d(n -1)

You are given a1 = 2, a12 = 211, so ...

  211 = 2 + d(12 -1)

  209/11 = d = 19 . . . . . solve the above equation for the common difference

Now, we can use the same equation to find n for an = 135.

  135 = 2 + 19(n -1)

  133/19 = n -1 . . . . . . . subtract 2, divide by 19

  7 +1 = n = 8 . . . . . . . . add 1

135 is the 8th term of the sequence.

3 0
3 years ago
What is the answer to the equation 7/9+1/7+3/5
Eva8 [605]

Answer:

Step-by-step explanation:

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3 0
3 years ago
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3 years ago
Which statement about rhombuses and parallelograms is true?
puteri [66]

Answer:

Parallelograms ALWAYS have opposite sides parallel; rhombuses sometimes do not.

Step-by-step explanation:

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3 years ago
Is this correct? I have an open dot on 2 with the arrow going to the right if it's not clear
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Answer:

Yep! an open dot is <

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Hope this helps! :)

If you don't mind please mark as brainliest! :)

7 0
2 years ago
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