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frez [133]
3 years ago
10

Two concentric circles with different radii share how many common tangent lines?

Mathematics
1 answer:
Dominik [7]3 years ago
7 0
The answer is a.0

Concentric means these circles would have the same center, thus, the smaller circle must be inside the bigger circle. Any tangent line to the smaller circle wont be a tangent line to the bigger circle, since that tangent line would intersect at the bigger circle at 2 points. Any tangent line to the big circle will not touch the small circle... so the answer would be 0.
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The following data set shows a random selection of delivery drivers from a Chinese delivery restaurant. Driver ID Age, years Gen
Firlakuza [10]

Answer:

Gender, car

Step-by-step explanation:

Give the data above :

The categorical variables are : Gender and Car

The Gender are car variables represents non numeric variables written as strings and as such does not allow for numeric calculations such as addition, subtraction and so on, they are instead used to classify the observations in the data into discreet groups, the gender variable separates observations into Male and Female classes while, the car variable separates cars driven into distinct classes denoting the name of cars driven by each observation in the data. The other variables are of quantitative nature as they allow for numerical computation of the data values.

3 0
3 years ago
Graph y < 1/3x + 1/2. What are the points???
mestny [16]
You don't have a graph there so idk if im right but i think its (0,2) and (3,1) plz tell me if im wrong :)
6 0
3 years ago
Read 2 more answers
A triangle has one angle that measures 23 degrees, one angle that measures 43 degrees, and one angle that measures 114 degrees.
nikdorinn [45]

Answer:

D Scalene triangle

Step-by-step explanation:

All angles are different, there the sides of triangle will be different which is a Scalene triangle

7 0
2 years ago
7 1/2 + 8 1/3<br><br> Brainly One
gogolik [260]

First, make all the fractions have the same denominator. That would make 39/6 + 50/6. Then, just add the tops together, and your answer is 89/6.

4 0
3 years ago
Read 2 more answers
The numbers 1, 2, 3, 4, 5, 6, 7, and 8 are arranged to form four two-digit numbers. What is the largest amount of primes that co
artcher [175]
<h3>Answer:  3 primes</h3>

==========================================================

Reason:

The only even prime number is 2. The other primes are odd.

The list of the first few primes are:

2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43

A prime is any number that has factors of 1 and itself, and nothing else.

For instance, 13 is prime because 1 and 13 are the only factors.

-----------

As you can see, if we want a two digit prime number, then the units digit must be odd. Otherwise, 2 is a factor making it not prime (aka composite).

So far we see that the units digit is 1, 3, 5, 7, or 9. But wait, if 5 is the units digit then 5 is a factor. Eg: 5 is a factor of 35 since 5*7 = 35. Refer to the divisibility by 5 rule.

So we reduce the list of choices to 1, 3, 7, 9 for the units digit.

Unfortunately 9 is not in the list of original numbers given, so we can't use it. We really have 1, 3, or 7 as our choices to form the units digit of the two-digit number.

-----------

Let's try to build some primes.

Pick the smallest odd number 1 as the units digit. Then pick 2 as the tens digit. The number 21 is composite because 21 = 7*3, so we rule it out.

On the other hand, 31 is prime since only 1 and 31 are factors.

The problem is that now "3" is tied up and cannot be used for another prime. The good news is that 41 is prime and that's what I'll go with.

Cross 1 and 4 off the list.

The next odd number is 3 which is our units digit. The value 23 is prime.

So far we have 41 and 23 as our two primes.

Like mentioned earlier, we cannot use 5 as the units digit. The number 57 is not prime because 57 = 19*3. So we'll skip over 5.

The number 67 is prime for similar reasoning mentioned earlier.

------------

We have these primes: 41, 23, 67

The next number either 58 or 85 isn't prime

This is one way to show an example of why we're only able to get 3 primes out of this.

4 0
2 years ago
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