anonymous
  • anonymous
I'll fan and give medal. The area of a triangle is 25 square iches. Its base (b) is 5 inches. What is its height (a)?
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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schrodinger
  • schrodinger
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anonymous
  • anonymous
\[Formula: \frac{ 1 }{ 2 }ba\]
Photon336
  • Photon336
be sure plug in your numbers like this
Photon336
  • Photon336
\[25 inches ^{2} = \frac{ 1 }{ 2 }5a\]

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Photon336
  • Photon336
then solve for h by dividing both sides by 2.5 \[25inches ^{2} = 2.5h \]
Photon336
  • Photon336
\[\frac{ 25 }{ 2,5 } = 10 inches \]
Photon336
  • Photon336
sorry that should be 2.5, then you would get the height to be 10 inches.
anonymous
  • anonymous
and it says to check it so how do i do i check it
Photon336
  • Photon336
you take your answer and plug it back in
Photon336
  • Photon336
\[a = \frac{ 1 }{ 2}bh \]
Photon336
  • Photon336
plug in all your numbers \[25 = (0.5)(5)(10) \]
Photon336
  • Photon336
so clearly 0.5x5 = 2.5 and 10*2.5 = 25 so on the left side we have the same thing. 25 = 25 that's how we know it's right
Photon336
  • Photon336
@expressing.myself00 want me to give you a problem?
anonymous
  • anonymous
maybe later so I can fully get it before y math test but I'm just trying to get this turned in now so I don't stay behind in my classes
Photon336
  • Photon336
do you get what I wrote?
anonymous
  • anonymous
yeah but Imma study it more after I turn this in
anonymous
  • anonymous
so how would dividing both of the sides look? like what would that step of this problem look like?
Photon336
  • Photon336
Okay let me show you
Photon336
  • Photon336
@expressing.myself00 I want to show you the entire process step by step. look this over |dw:1446694431253:dw| we plug in all the values |dw:1446694473341:dw| now we simplify by multiplying 5 times one half and we get this |dw:1446694536214:dw| You see that we MUST solve for H. we do this by getting H by itself. to do THIS we see 2.5 times H we must divide both sides by 2.5 to get H by itself. |dw:1446694585466:dw| Now we check our work. We check our work by plugging everything in. in an equation what we have on the right side must equal what we have on the left side otherwise it's not right. we plug in h = 10 and b = 5 into the original equation and find that 0.5*5 = 2.5x10 = 25. that's our original area so that's how we know it's correct. |dw:1446694660774:dw|

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