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Dafna11 [192]
3 years ago
10

What is the value of x in the equation? –30 = 3x + 21

Mathematics
1 answer:
Sergio039 [100]3 years ago
4 0

Answer:

-17

Step-by-step explanation:

as the picture says I have moved 21 so that the numbers are together and it's easier to solve then you move 3 to divide it on the other side and x is left alone.

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Will markk the brainliest
ivolga24 [154]

Answer:

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

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

  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}.

__

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
Which of the following statements is true about the graph of the equation 2y-3x=-4 in the xy-plane? Explain step by step how you
sertanlavr [38]

D. It has a positive slope and negative y- intercept.

Step-by-step explanation:

2y -3x = -4

We can rewrite the equation in the form of y = mx+ b where m is the slope and b is the y - intercept as,

2y = 3x- 4

Dividing all the terms by 2, we will get,

2y/2 = 3x/2 - 4/2

y = (3/2)x -2

So the slope is 3/2 which is positive and y-intercept is -2 which is negative.

5 0
3 years ago
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Answer:

d) 3/8

Step-by-step explanation:

0, 1/8, 2/8, 3/8, 4/8, 5/8, 6/8, 7/8, 1

Hope this helps!

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2 years ago
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Answer:

x-intercept=(-1,0) y-intercept =(0,-3)

Step-by-step explanation:

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2 years ago
Can an area of a polygon be zero?<br><br> true or false
Nata [24]
False. If the area is 0 that means there is nothing there, therefore the area of a polygon cannot be zero.
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3 years ago
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