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April 18, 2014

April 18, 2014

Posted by **anonymous** on Saturday, October 27, 2007 at 11:41am.

*Please help me- I am having a really bad day. Thank you.*

- algebra -
**Reiny**, Saturday, October 27, 2007 at 11:53amLet the base be x units long.

"Consecutive integers" are one apart, so if the first one is x then the next one must be x+1.

So the other two sides must be x+1 each.

Since perimeter is the sum of the 3 sides...

x + x+1 x + x+1 = 20

3x + 2 = 20

3x=18

x=6

So the base is 6 and each of the other two sides is 7

check: 6 and 7 are consecutive integers

6+7+7 = 20

- algebra -
**anonymous**, Saturday, October 27, 2007 at 12:01pmx + x+1 x + x+1 = 20

In the above, where did you get the 1x from? This is what I came out with:

x+x+x+1=20

- algebra -
- algebra -
**Reiny**, Saturday, October 27, 2007 at 12:06pmIt was clearly a typo

looking at the line that follows should have made it obvious.

this is what it should have been putting the sides in brackets

(x) + (x+1) + (x+1) = 20

- algebra -
**anonymous**, Saturday, October 27, 2007 at 12:12pmok I get it. I got x= 6 now i can go from there. Thanjs much for all your help!

- algebra -
**anonymous**, Saturday, October 27, 2007 at 12:24pmWould the let statements go like this then:

Let x= 1st C.I.= 6

Let x+1= 2nd C.I.= 7

Let x+1= 3rd C.I.= 7

b/c the second and 3rd aren't C.i.s, so...????????

- algebra -
**Reiny**, Saturday, October 27, 2007 at 12:47pmRead the question carefully.

You said the triangle was isosceles, so two of its sides have to be the same.

- algebra -
**anonymous**, Saturday, October 27, 2007 at 12:57pmyeah, but how do i convey that in the let statements? 7=7, so they aren't consec. integers, right? if so, what do i put instead?

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