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Svetllana [295]
3 years ago
9

If < A and < B are vertical angles, and < A = 2x - 11 degrees, and < B = x + 7 degrees, find x.

Mathematics
1 answer:
Tema [17]3 years ago
7 0

Answer:

x=18

Step-by-step explanation:

Vertical angles are congruent. This means that they are equal to each other. So, to solve set them equal to each other and isolate x. First, set up the equation. Then, subtract x from both sides. Finally, add 11 to both sides and simplify.

1) 2x-11=x+7

2) x-11=7

3)x=18

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Answer:

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  2. the graph of f^-1(x) will include the point (0, 3)

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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 ...

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

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

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

  7 +1 = n = 8 . . . . . . . . add 1

135 is the 8th term of the sequence.

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3 years ago
A hiker walks at a speed of 3 2/5 km per hour. how many km will he walk in 3/4 of an hour
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3 years ago
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Step-by-step explanation:
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Answer:

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Step-by-step explanation:

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