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nekit [7.7K]
4 years ago
13

There are 325 7th graders in 12 classes . determine the unit rate

Mathematics
1 answer:
Simora [160]4 years ago
5 0
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Write the explicit formula
Margaret [11]

Answer:

Step-by-step explanation:

Since there is no single number we can add to one number in the sequence to get to the next one, this is not arithmetic. That means it's geometric, if it's a sequence at all. To get from 2 to 6 we multiply by 3. To get from 6 to 18 we multiply by 3. To get from 18 to 54 we multiply by 3. Therefore, this is in fact geometric and the common ratio is 3. The standard form of a geometric explicit formula is

A_n=a_1(r)^{n-1 where n is the position of a number in the sequence, a1 is the first number in the sequence, and r is the common ratio. We have then

a1 = 2 and r = 3. Therefore, the explicit formula is

A_n=2(3)^{n-1 and you can use this to find the value of any number in the sequence. Very handy; much more so than the recursive formula, which requires that all the numbers in a sequence be found in order in order to get to a desired value.

6 0
3 years ago
In a state swim meet, none of the swimmers competing share a name. If the set of swimmers in the 100-m buterfly race is equal to
Dafna11 [192]

Answer:

The correct option is;

C. The only swimmers in the 100-m butterfly race are from the rival swim team

Step-by-step explanation:

The question is a word problem

The given information in the question are;

The names (first and last names) of all the competitors are different

The set, (which are the names) of the swimmers taking part in the 100-m butterfly race = The set (which contains the names) of swimmers from the rival team

Therefore, the only members of the set (the only names in the set) of swimmers taking part in the 100-m butterfly race are (the names of the swimmers from the rival swim team) from the rival swim team.

8 0
4 years ago
Judith went shopping with $50 and spend $45. What percentage of her money did she spend?
tekilochka [14]

Answer:

90%

Step-by-step explanation:

The percentage that she spent is  the money spent over the total

45/50 *2/2

90/100

Percent means out of 100

90%

4 0
3 years ago
How many digits are there in the smallest sequence of repeating digits in the decimal equivalent of
Alex Ar [27]

Answer: 3

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

Explanation:

Using a calculator, you should find that

233/999 = 0.233233233233...

the "233" repeats forever. We see that there are 3 digits here, which is the answer.

6 0
3 years ago
10<br> 8<br> 12<br> 10<br> 14<br> ? <br><br> a. 16<br> b. 10<br> c. 12<br> d. 18
ahrayia [7]

Answer:

12

Step-by-step explanation:

10  8  subtract 2

8 12  add 4

12-10  subtract 2

10 14  add 4

Now we subtract 2

14-2 = 12

3 0
3 years ago
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