Barbara answered 72 questions correctly on her test. If her score on the test was 80%, how many questions were on the test?
2 answers:
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Area of a triangle is equal to 1/2 b(h) so since you already have the height and base, all you need to do is input it back into the equation:
(10)(13)
Multiply 10 & 13 to equal
(130)
Then take half of 130 to get
A = 65
Multiply 10 & 13 to equal
Then take half of 130 to get
A = 65
Hey I have posted a picture the method I use to solve simultaneous equations is change the sign and follow the new sign.
This involves changing the sign for the second equation and solving it
This involves changing the sign for the second equation and solving it