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Olegator [25]
3 years ago
7

AC is tangent to circle o at point C.What is the measure of <OAC​

Mathematics
1 answer:
erica [24]3 years ago
6 0

<em>∠OAC = 27°</em>

Step-by-step explanation:

When a line is tangent to a circle, the part where the radius meets with the line of tangency will be a right angle. Since we know this, we know that ∠C is equal to 90°. We also know that all of the angles in a triangle will add up to be 180°.

We can now add up the two angles we know and subtract it from 180° to get the measurement of ∠OAC.

90+63=153

180-153=27

∠OAC = 27°

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OLEGan [10]

-2(1-7n)-5n=34

Multiply the bracket by -2

(-2)(1)=-2

(-2)(-7n)=14n

-2+14n-5n=34

-2+9n=34

Move -2 to the other side. Sign changes from -2 to +2.

-2+2+9n=34+2

9n=34+2

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Divide by 9 for both sides

9n/9=36/9

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3 years ago
One number is 23 more than another. If the sum of the two numbers is 163, find the two numbers.
kipiarov [429]

ANSWER

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EXPLANATION

We have that one number is 23 more than another.

Let the first number be x.

Let the second number be y.

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The sum of the two numbers is 163. This means that:

x + y = 163 ____(2)

Put (1) in (2):

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5 0
1 year ago
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Answer:

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In other words:

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