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padilas [110]
3 years ago
13

How to determine whether a number is prime or composite number without using calculator fast?

Mathematics
1 answer:
Assoli18 [71]3 years ago
3 0

Answer:

To prove whether a number is a prime number, first try dividing it by 2, and see if you get a whole number. If you do, it can't be a prime number. If you don't get a whole number, next try dividing it by prime numbers: 3, 5, 7, 11 (9 is divisible by 3) and so on, always dividing by a prime number

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What is the value of 100?
Nesterboy [21]

Answer:

10

Step-by-step explanation:

Means back the numbers into multiples of several small numbers

Like:; 1. We take LCM of 40

Just break into multiples of small number

40= 2×2×2×5

2. We take LCM of 50

50= 5×5×2

So LCM for 100 is 2×2×5×5

after that see the pairs in the LCM like 2×2 or 3×3 or 4×4(same numbers)

Then write the the single number in place of two multipled numbers

Like:; 2×2 is written as 2 // 3×3 is written as 3

So we can write 100 into 2×2×5×5 and then after selecting pairs (2×2)×(5×5)

write pairs in single number 2×5

And so we get 2×5=10

So we find root of 100 that is 10

8 0
4 years ago
Read 2 more answers
Is it ever possible for a triangle's altitude to lie entirely outside the triangle?
Tomtit [17]

Answer:

If all three of the latitudes lie entirely outside the triangle

its a because all the altitudes have to cross each other so when an obtuse angle is being measured the altitudes have to cross but the only way they can can cross is if they are outside of the angle to get  the right mesaurement.

so yes its possible.

3 0
3 years ago
Which of the following points is the solution to the system? <br> X-2y= -1 <br> 3x+5y = 8
tia_tia [17]
The answer to this is (1, 1).
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Find four consecutive odd integers whose sum is 56
Andrew [12]
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5 0
3 years ago
A total of 120 smoothies were sold on the first day of the month from July-December.
Vesnalui [34]

Answer:

the answer would basically be 720 smoothies in total from Jul.-Dec.

Step-by-step explanation:

120*6=x

720=x

8 0
3 years ago
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