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umka21 [38]
3 years ago
10

If 9 times a number is added to 18, the result is -27. Find the number.

Mathematics
1 answer:
denis23 [38]3 years ago
3 0

Answer:

-5

Step-by-step explanation:

9x +18=-27

9x = -27 -18

9x =-45

x = -45/9

x = -5

x= the number

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We have been given an image of a circle. We are asked to find the value of each variable.

We can see that angle b corresponds to diameter of circle. We know that the measure of an angle that is inscribed to the diameter of a circle is 90 degrees . Therefore, the value of b will be 90.

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a=\frac{1}{2}\cdot 99

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Therefore, the value of a is 49.5 units.

We know that measure of all angles of a triangle is 180 degrees. The measure of 3rd angle will be half the measure of c, so we can set an equation as:

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\frac{1}{2}c\cdot 2=40.5\cdot 2

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It is important to know that he expression a < x < b means that x is greater than a and less than b. So, for finding the correct value let's analyse each option.

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