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elena-s [515]
3 years ago
5

Find Arc Measures of two diameters

Mathematics
1 answer:
svetoff [14.1K]3 years ago
3 0

Answer:

m arc ACD =310

m arc AC = 130

Step-by-step explanation:

drawing the figure helps

if you do,  should get something like the figure below

filling in arc ad as 50 degrees tells you that the angle describing it is also 50 degrees; it's a central angle.

and we  know that 1/2 of a circle  is 180 degrees. so if you subtract 50 from 180 you'll get  130 which will be your measurement for arc AC (because it is a central angle and AC

+AD completes the 180 half.).

as well as that to get ACD, well 1st we know that arc AC is within arc ACD. that would mean that ACD has to be more than 130.

what you can do is subtract  50 from 360. the entire circle is 360, but  seeing as the arc is ACD (The rest of the circle excluding arc AD since we aren't looking for that measurement) we can just subtract.

subtracting 50 from 360 will give you 310

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the answer is D-n is greater then or equal to nine.

because the red dot starts on nine and goes up its greater than nine and because its on nine its also going to equal it. I had a problem getting the signs messed up when I learned it but I remember the sign always eats the greater number. I hope this answer could help and I'm sorry if the answer is incorrect.

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3 years ago
The sum of rational number and an irrational number
Angelina_Jolie [31]

Answer:

The sum of a rational number and an irrational number is irrational." By definition, an irrational number in decimal form goes on forever without repeating (a non-repeating, non-terminating decimal). By definition, a rational number in decimal form either terminates or repeats.

Step-by-step explanation:

However, if the irrational parts of the numbers have a zero sum (cancel each other out), the sum will be rational. "The product of two irrational numbers is SOMETIMES irrational." Each time they assume the sum is rational; however, upon rearranging the terms of their equation, they get a contradiction (that an irrational number is equal to a rational number). Since the assumption that the sum of a rational and irrational number is rational leads to a contradiction, the sum must be irrational.

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3 years ago
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Basile [38]
The answer to -6(x+3)=6 is x= -4

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4 0
3 years ago
Please help!!!! I need to pass this class!!
Liono4ka [1.6K]

Answer:

x is approximately 69.39 degrees.

Step-by-step explanation:

To find x in this triangle, we can use the sin rule:

\frac{a}{sin(A)} =\frac{b}{sin(B)}

The corresponding angle for each length is the one that lies directly opposite it. E.g. if 3.5 was our length 'a', then 55 degrees would be our angle A.

So let's take 3.5 and 55degrees as our length and Angle A, and 4 and x degrees as our length and angle B as we are trying to solve for x.

This would give us the following equation:

\frac{3.5}{sin(55)} =\frac{4}{sin(x)} \\

Since we are solving for an angle, it will be easier to rearrange the equation if we have it as the numerator, so we can flip the fractions to make it easier. It will still be equal as we are looking for the ratio.

\frac{sin(55)}{3.5} =\frac{sin(x)}{4} \\

From here let's isolate the sin(x) by multiplying by 4 and solving the values we have so far:

\frac{4 sin(55)}{3.5} =sin(x)\\\frac{3.2766}{3.5}  =sin(x)\\0.936=sin(x)

Now the final step is to use inverse sin to cancel the sin so we just have x:

sin^{-1} 0.936=x\\x=69.39

x is approximately 69.39 degrees.

Hope this helped!

4 0
3 years ago
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