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tensa zangetsu [6.8K]
4 years ago
10

How to tell if a number is prime or composite

Mathematics
2 answers:
kobusy [5.1K]4 years ago
7 0
A prime number<span> has only two factors: 1 and itself. A</span>composite number<span> has more than two factors. The</span>number<span> 1 is neither </span>prime<span> nor </span>composite<span>. The </span>prime numbers<span> between 2 and 31 are 2, 3, 5, 7, 11, 13, 17, 19, 23, 29 and 31 since each of these </span>numbers<span> has only two factors, itself and 1.</span>
evablogger [386]4 years ago
4 0
Prime numbers only have two factors, 1 and itself, and composite numbers have multiple factors.
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Angelique makes beaded jewelry. The graph below shows the number of beads on varying cord lengths.
8_murik_8 [283]

Answer:

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Step-by-step explanation:

23=4 3+4+7 1/2 4/7 8/2

6 0
2 years ago
If 6 pounds of blueberries costs $16.50, is $1 for 2.75 pounds of blueberries true?
strojnjashka [21]

Step-by-step explanation:

Hmm I'm not sure but (no) I think

6 pounds = $16.50

1 pound = $16.50 ÷ 6

=$2.75

$16.50 = 6 pounds

$1 = 6 ÷ $16.50 = 4/11 pounds (0.36363636......)

5 0
3 years ago
On Monday, students at a summer camp spent 4 hours 25 minutes at the pool learning to swim. In the morning, they spent 2 hours 4
Lilit [14]
4 hours and 25 minutes simplifies to 265 minutes
2 hours and 48 minutes simplifies to 168 minutes

Subtract the numbers: 265-168 = 97 minutes left

Convert back to hours and you have 1 Hour 37 minutes at the pool in the afternoon.
5 0
3 years ago
75.5% of the students at Sarasota Community College are from in state. If 24,950 students are from in state, how many students a
vladimir1956 [14]

Answer:

33046 students

Step-by-step explanation:

Find how many students attend the college by dividing 24,950 by 0.755

24,950 / 0.755

= 33046.36

Round down, since the answer has to be a whole number:

33046.36

= 33046

So, approximately 33046 students attend the college

3 0
3 years ago
During the summer holidays sarah earns pocket money by mowing lawn. She can mow 6 lawns in 1 1/2 and clean the pool in one-sixth
tigry1 [53]

Answer:

It will take Sarah 2 1/2 hours to mow 10 lawns

It will take Sarah 1 2/3 hours to clean 10 pools

Step-by-step explanation:

During the summer holidays, Sarah earns pocket money by mowing the lawn. She can mow 6 lawns in 1 1/2 hour and clean a pool in one-sixth of an hour. How long does Sarah take to clean 10 pools and 10 lawns?

Number of lawns : Time to mow lawns = 6 : 1 1/2

= 6 : 3/2

Number of lawns : Time to mow lawns = 10 : x

6 : 3/2 = 10 : x

6 ÷ 3/2 = 10/x

6 * 2/3 = 10/x

12/3 = 10/x

Cross product

12 * x = 3 * 10

12x = 30

x = 30/12

x = 2 6/12

x = 2 1/2 hours

It will take Sarah 2 1/2 hours to mow 10 lawns

Number of pools cleaned : time taken = 1 : 1/6

Number of pools cleaned : time taken = 10 : x

1 : 1/6 = 10 : x

1 ÷ 1/6 = 10/x

1 * 6/1 = 10/x

6 = 10/x

Cross product

6 * x = 10

6x = 10

x = 10/6

x = 1 4/6

x = 1 2/3 hours

It will take Sarah 1 2/3 hours to clean 10 pools

3 0
3 years ago
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