3(-2a-4)+3a I need to answer for this for khan academy, the answer options are
2 answers:
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Answer:
5.9
Step-by-step explanation:
Area of a triangle is 1/2 base times height. the base is the horizontal part of the triangle and the height is the vertical part. Since it a isosceles they are equal. Those two segment are also called the legs (remember that for later). 4x4=16 times 1/2 equal 8 cm squared. So know me must find the hypotenuse. Since we since dealing with a right triangle we are going to use pythagorean theorem which is
where a and b are the LEGS and c is the hypotenuse. the legs are also known as base and height so we use
which simplify to
which is about 5.9