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Snowcat [4.5K]
2 years ago
15

What times what equals -20 and added together equals -8

Mathematics
1 answer:
Leto [7]2 years ago
5 0
4 x -5 = -20 then 12 + -20 = -8 
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Now that you have converted a terminating decimal number into a fraction, try converting a repeating decimal number into a fract
Tom [10]
The first step is to assign the decimal number to a variable.

For the repeating fraction 0.111_1, this would look like
.. x = 0.111_1 . . . . . . . . . . where we use an underscore to identify the following digit(s) as repeating

The next step is to multiply that value by 10 to a power equal to the number of repeating digits. If there is one repeating digit (as here), then you want (10^1)x = 10x.
.. 10x = 1.111_1

The third step is to subtract x from this.
.. 10x -x = 1.111_1 -0.111_1 = 1
.. 9x = 1

And the final step is to divide by the coefficient of x.
.. x = 1/9 . . . . . . this is the value of the repeating decimal fraction.

_____
Here's one that's a little more complicated. It is done the same way.
.. x = 3.254545_45
.. 100x = 325.454545_45
.. 100x -x = 99x = 322.2
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3 0
3 years ago
1. f(x) = x^3– 4x^2 – 7x + 10
True [87]

9514 1404 393

Answer:

  zeros: {-2, 1, 5}

Step-by-step explanation:

A graphing calculator works nicely for identifying turning points, roots, increasing/decreasing intervals, and more.

8 0
3 years ago
In the diagram below, A C ≅ C E , and D is the midpoint of CE. If CE = 10x+18, DE = 7x-1, and BC = 9x+2, find AB.
mezya [45]

Answer:

5x+10

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
What is the angle of rotation counterclockwise about the spinner's center that maps label g to label B?
gizmo_the_mogwai [7]

Answer:

The answer is:

The angle of rotation counterclockwise about the spinner's center that maps label g to label B is 180° .

Step-by-step explanation:

The angle of rotation counterclockwise about the spinner's center that maps label g to label B is 180° .

Look at the attached picture of a spinner:

We know that the angle formed by a straight line is  equal to 180°

So, in order to map label g to label B we have to set the needle of the spinner straight. Hence the angle formed by the needle is 180° ....

4 0
2 years ago
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Let f(x) = 12 over the quantity of 4 x + 2. Find f(−1).
stich3 [128]
12/6x its 2x your anwser would be 2x its simple
8 0
3 years ago
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