SOLUTION: I'm learning algebra at age 54 and trying real hard to understand. I need help with these: 1. A=1/2bh for b 2. Evaluate the expression for x=-2, y=3, z=-4. 3. -177-26

Algebra ->  Absolute-value -> SOLUTION: I'm learning algebra at age 54 and trying real hard to understand. I need help with these: 1. A=1/2bh for b 2. Evaluate the expression for x=-2, y=3, z=-4. 3. -177-26       Log On


   

Question 26452: I'm learning algebra at age 54 and trying real hard to understand. I need help with these:
1. A=1/2bh for b
2. Evaluate the expression for x=-2, y=3, z=-4.
3. -177-26
_______
-13
Thank you
Sherry
Answer by Alwayscheerful(414) About Me  (Show Source):
You can put this solution on YOUR website!
Wow, age 54?

1. A=%281%2F2%29bh
To solve for b, you need to isolate it
First step, get rid of 1%2F2 by multiplying both sides by 2
2A=bh
To get b alone, divide both sides by h
highlight%28%282A%29%2Fh=b%29 :)

2. Can't solve this, for not enough information was given. What expression?

3. %28-177-26%29%2F-13
Solved by pluggable solver: EXPLAIN simplification of an expression
Your Result:


YOUR ANSWER


  • Graphical form: %28-177-26%29%2F-13 simplifies to 15.6153846153846
  • Text form: (-177-26)/-13 simplifies to 15.6153846153846
  • Cartoon (animation) form: simplify_cartoon%28+%28-177-26%29%2F-13+%29
    For tutors: simplify_cartoon( (-177-26)/-13 )
  • If you have a website, here's a link to this solution.

DETAILED EXPLANATION

Look at %28-highlight_red%28+177+%29-highlight_red%28+26+%29%29%2F-13.
Added fractions or integers together
It becomes %28highlight_green%28+-203+%29%29%2F-13.
Look at %28highlight_red%28+-203+%29%29%2F-13.
Removed extra sign in front of -203
It becomes %28-highlight_green%28+203+%29%29%2F-13.
Look at highlight_red%28+%28-highlight_red%28+203+%29%29%2F-13+%29.
Remove unneeded parentheses around factor highlight_red%28+203+%29
It becomes -highlight_green%28+203+%29%2F-13.
Look at -highlight_red%28+203%2F-13+%29.
Removed extra sign in front of 15.6153846153846
It becomes highlight_green%28+15.6153846153846+%29.
Result: 15.6153846153846

Universal Simplifier and Solver


Done!

If you want it in a fraction, highlight%28203%2F13%29
Hope this helps!