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3 years ago

The sitting unit for distance is the kilometer

Mathematics

1 answer:

GaryK [48]3 years ago

3 0

Don't understand what do you mean

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Can somebody help me with this question?

umka2103 [35]

9514 1404 393

Answer:

(d) b/a

Step-by-step explanation:

The applicable rule of exponents is ...

(a^b)/(a^c) = a^(b-c)

Then the expression simplifies to ...

b^-2/(ab^-3) = b^(-2-(-3))/a = b^1/a = b/a

5 0

3 years ago

Billy is 6 years younger than Amy. The sum of their ages is 22. How old will each of them be in 8 years?

Dafna11 [192]

First let's find their current ages:
Billy + 6years = Amy
Billy + Amy = 22

Combining these equations:
Billy + (Billy + 6years) = 22
2 Billy = 16
Billy = 8

Billy + 6 = Amy
8 + 6 = Amy
Amy = 14

In 8 years Billy will be 16 and Amy will be 22. The answer is d.

3 0

3 years ago

Read 2 more answers

47. Forming a Committee Four members from a 20-person committee are to be selected randomly to serve as chair- person, vice-chai

Svetllana [295]

Answer:

116,280 different leadership structures are possible

Step-by-step explanation:

The order is important.

For example, a Committee of John, Elisa, Laura and Rose means that John is the chairperson, Elisa the vice-chairperson, Laura the secretary and Rose the treasurer. If we exchange John and Elisa, their roles are also exchanged. This means that we use the permutations formula to solve this question.

Permutations formula:

The number of possible permutations of x elements from a set of n elements is given by the following formula:

$P_{(n,x)} = \frac{n!}{(n-x)!}$

How many different leadership structures are possible

Permutations of 4 elements from a set of 20. So

$P_{(20,4)} = \frac{20!}{(20-4)!} = 116280$

116,280 different leadership structures are possible

6 0

3 years ago

The distance between the center of an ellipse and either of the vertices on its major axis is equal to:

Solnce55 [7]

I think your answer would be C?

8 0

3 years ago

Lynn can type 60 words per minute. If she types for 30 minutes, how many words does she type in all?

Crazy boy [7]

Answer:1800 words

Step-by-step explanation:

Multiply how many words per minute she types by how many minutes she types. In this case 60x30=?. The easy way to do this is drop the 2 zeros and do 6x3=18. In the original equation we dropped the 2 zeros. Now we add them back on the back of the 18 and get 1800.

7 0

3 years ago