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3 years ago

Determine whether the number 1 is prime or composite. Explain how you know.

2 answers:

8 0

To determine if a number is prime or composite, follow these steps: Find all factors of the number. If the number has only two factors, 1 and itself, then it is prime. If the number has more than two factors, then it is composite.

From Google.

ankoles [38]3 years ago

5 0

Answer:

Neither

Step-by-step explanation

The number one has only one positive factor: 1.

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Selena is a waitress. She earns $2.50 per hour plus tips. Last weekend, Selena eamed

viva [34]

Answer: more than

Step-by-step explanation:

If you divide 175/2.5 you get 70

That is the amount of hours she worked

So therefor she worked over 50 hours

3 0

3 years ago

A stock market fell 40 points each day for

Montano1993 [528]

Answer: -120

Step-by-step explanation:

-40 X 3 = -120

7 0

2 years ago

HELPPPP PLEASE<br>60 POINTS

soldi70 [24.7K]

Answer:

1056

Step-by-step explanation:

Find the area of each square and add them to find the area of the rectangle

The area of a square = side * side

The areas are:

1*1= 1

4*4 = 16

7*7 = 49

8*8 = 64

9*9 = 81

10*10 = 100

14*14 = 196

15*15 = 225

18*18 = 324

The sum of the areas =

324+225+196+100+81+64+49+16+1

= 1056 units ^2

3 0

3 years ago

Read 2 more answers

Help plz this is multiple choice so just choose the answer u think is correct.

babymother [125]

the answer is 34.83 I believe

5 0

3 years ago

The sum of the first n terms of an arithmetic sequence is n/2(4n + 20).

lesantik [10]

Answer:

(a).

$S_{n} = \frac{n}{2} (4n + 20) \\ \\S _{n - 1} = \frac{(n - 1)}{2} (4n - 4 + 20) \\ \\ S _{n - 1} = \frac{(n - 1)}{2} (4n + 16) \\ \\S _{n - 1} = \frac{(n - 1)(4n + 16)}{2} \\ \\ { \boxed{S _{n - 1} = {2 {n}^{2} + 6n - 8}}} \\$

(b).

from general equation:

$S _{n - 1} = \frac{(n - 1)}{2} (4n + 16)$

first term is 4n

common difference:

$16 = \{(n - 1) - 1 \}d \\ 16 = (n - 2)d \\ d = \frac{16}{n - 2}$

8 0

3 years ago