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

2 answers:

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

Write two numbers that multiply to the value on top and add to the value on bottom.

zavuch27 [327]

2 and 4 because they all multiply and add up to 12 and 20

4 0

3 years ago

Read 2 more answers

A while back, either James borrowed $12 from his friend Rita or she borrowed $12 from him, but he can’t quite remember which. Ei

Ket [755]

He will have 32.00 left from paying back rita.

3 0

4 years ago

Find the length of base PQ in the trapezoid.

iris [78.8K]

Answer:

PQ = 20

Step-by-step explanation:

Theorem: The length of the median of a trapezoid is the average of the base lengths.

$\frac{PQ + 12}{2} = 16$

PQ + 12 = 32

PQ = 20

See how easy that is if you know the theorem!

5 0

3 years ago

I'm depressed and bored can anyone talk but pls pls no harmful talk pls a request

Vlad [161]

Answer:

sure!!!!!!!!!!!!!!!!!!!!

Step-by-step explanation:

How're you doing?

7 0

3 years ago

(25 points)

Licemer1 [7]

Here, y = -15 with x = -20
LCM of 15 & 20 is 60, so divide 15 & 20 from 60,
60/15 = 4 & 60/20 = 3

Now, multiply the results with intial values,
4y = 3x
y = 3/4 x

When y = 12,
x = 12 * 4/3
x = 48 / 3
x = 16

In short, Your Answer would be 16

Hope this helps!

8 0

3 years ago