Wednesday

September 17, 2014

September 17, 2014

Posted by **Lana Von Monroe** on Tuesday, April 10, 2012 at 10:43pm.

values of x

x: x2+x+5:

1 7

2 11

6 47

7 61

Josiah concluded that for all positive values of x, x2+x+5 produces a prime number. Which value of x serves as a counterexample to prove Josiah’s conclusion false?

A: 5

B: 11

C: 16

D: 21

- Math 8th Grade -
**drwls**, Tuesday, April 10, 2012 at 11:06pmTry each one see which one isn't prime. You won't have to go far down the list.

**Answer this Question**

**Related Questions**

7th grade - Site #3: What in the World - Mystery Photos (from National ...

8th grade Math - " four less than twice a number is greater than six " Can ...

Math Statistics - The table below shows Rico’s grades during the third term in ...

math - translate the phrase into a mathematical expression and then evaluate it...

8th grade math - my project is to complete the October calendar, using the ...

Math - Journal 5. Look at the hundred chart. One number is wrong. Cross out that...

8th grade math - is this expression correct? Question: translate 14 increased by...

8th grade Math - I'm actually in 7th grade, but I'm doing 8th grade pre-algebra...

Algebra II - I don't exactly understand what needs to be done in this problem. ...

8th Grade Math - Draw and label a rectangle whose area is represented by the ...