1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
dexar [7]
3 years ago
9

Is 68 prime because i am doing homework and im stuck on this and it is very hard so help me please

Mathematics
2 answers:
BlackZzzverrR [31]3 years ago
8 0

If  68  is a prime number, then the only factors it has are  1  and  68.
If it has any other factors besides  1  and  68, then it's NOT prime.

Right away, without any higher math, you can look at just the last digit
in 68 .  The last digit is '8'.  That tells you that '68' is an even number,
and THAT tells you that '2' must be one of its factors.  So '68' is not a
prime number.

The factors of  68  are  1,  2,  4,  17,  34, and  68 .    

68  has four more factors besides  1  and  68, so it's not a prime number.

Diano4ka-milaya [45]3 years ago
8 0
No, it's not. 68 can be divided by 2
You might be interested in
How many kilometers are in a meter
creativ13 [48]
0.001 kilometers in 1 meter .
6 0
3 years ago
Read 2 more answers
A notebook costs £1.40, a pen costs 37p , a pencil costs 24p and a sharpener costs 77p.
finlep [7]
£9 - 90p = £8.10

2 Pencils = 48p
3 Pens = £1.11
3 Sharpeners = £2.31
All together = £3.90
£8.10 - £3.90 = £4.20

£4.20 / £1.40 = 3

Answer = 3 Notebooks
8 0
2 years ago
Read 2 more answers
Use the Binomial Theorem and Pascal’s Triangle to write each binomial expansion.
tensa zangetsu [6.8K]

Answer

x^3-15x^2+75x-125

5 0
3 years ago
What are four different ways of representing functions? How can you tell if a relationship is a function?
Nady [450]
It’s on the internet
5 0
3 years ago
if a sprinkler waters 1/14 of a lawn in 1/2 an hour, how much time it will take to water the entire lawn
arlik [135]
1/14 in 30 mins
30 mins x 14=420 mins
420 mins in hours =7 hours
3 0
2 years ago
Other questions:
  • Write a question that represents the following equation.<br><br> 5 · n = 35
    5·2 answers
  • A soft drink manufacturer produces 3408 cans in an 8-hour day. Cans are packaged 24 to a case. How many cases are produced each
    14·1 answer
  • Pleaseeee help!!!! I will mark you as brainlinest for correct answer!!!!!
    15·2 answers
  • Lauryn grew p tomato plants. Padma grew 5 fewer than 3 times the number Lauryn grew. Kent grew 6 more than 4 times the number La
    14·2 answers
  • I need help with a college math assignment
    11·1 answer
  • What is the volume of a hemisphere with a radius of 8.5 ft, rounded to the nearest tenth of a cubic foot?
    8·1 answer
  • 3/4(3z+6) - 1/4(5z - 24)
    15·1 answer
  • Methane, the chief component of natural gas, burns in oxygen according to the equation
    8·1 answer
  • Each day she’s swim 720 m.how many kilometers does she swim each day ?
    12·1 answer
  • What is the right order for the problem
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!