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4 years ago

Find the first, fourth and eighth terms of the sequence. A(n)=-5•2^x-1 help me please !

1 answer:

5 0

Replace the x by 1, 4 and 8 and perform the calculation:-

first term = A(1) = 5 * 2^(1-1) = 5* 2^0 = 5*1 = 5 answer

4th term = 5 * 2^(4-1) = 5 * 2*3 = 40 answer

8th term = 5 * 2^(8-1) = 5 * 2^7 = 640 answer

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each different letter of the word experiment is written in a card and placed in a hat. One card is drawn from the hat. How many

serg [7]

There would be 8 possible outcomes. e x p r i m n t.

6 0

3 years ago

A weather balloon ascended from an elevation of 18 feet below sea level to an elevation 19 1/2 feet above sea level. What distan

Misha Larkins [42]

Answer:

The ballon rose a distance of 37 1/2 feet

Step-by-step explanation:

Here, we are interested in calculating the level of ascent of the weather balloon.

From the question, we are told that the ballon made a transition from below the sea to above the sea.

Now to calculate the total distance, we shall

be adding the distances below the sea and the distances above;

Mathematically, that would be;

18 feet + 19 1/2 feet = 37 1/2 feet

4 0

3 years ago

Consider the following definitions for sets of characters: Digits = { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 } Letters = { a, b, c, d, e,

Darya [45]

Answer:

a) Number of passwords: 2763633600

b) Number of passwords: 2487270240

Step-by-step explanation:

We have:

10 digits,

26 letters, and

4 special characters.

We have to compute the number of passwords that satisfy the following conditions:

a) Strings of length 6. Characters can be special characters, digits, or letters, with no repeated characters.

We can use the three types of characters, as long as they do not repeat.

We have a total of 10+26+4=40 characters.

This means we have 40 options for the first place, (40 - 1) for the second place (as the first place already use one of the options available), and so on up to 6 places.

We can write this as:

$C=40*39*38*37*36*35=40!/34!=2763633600$

b. Strings of length 6. Characters can be special characters, digits, or letters, with no repeated characters. The first character can not be a special character.

In this case we add a restriction: the first character can not be a special character.

Then, for the first place we have only 40-4=36 options (digits and letters).

For the second place we can use the 39 options available (digits, letters and special characters).

Then we have:

$C=36*(39*38*37*36*35)=36*(39!/34!)=2487270240$

6 0

3 years ago

Read 2 more answers

Please help, the questions are now attached

Snowcat [4.5K]

A- the answer is 2, because it has the most amount of crosses or is the highest bar, showing that it is the most popular (mode)

mean is adding all the numbers divided by how many numbers there are, so 20/10=2

median is the number in the middle of an (ordered) row. but since the numbers are already ordered, it is in between 33 and 35, so the median is 34

C and D since they both show the most and least popular result, rather than estimating percentages.

D because each sample adds up to 200.

8 0

4 years ago

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People create models to understand the scale of the Sun in our galaxy, using objects that are familiar to them. One person scale

12345 [234]

Answer:

it Should be .0112

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers