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# Tutor profile: Martha G.

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Martha G.
Chem, Math and Science. 10+ years of tutoring expirience
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## Questions

### Subject:Geometry

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Question:

What is the difference between an isosceles triangle and an obtuse triangle?

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Martha G.

It is not so much that there is a specific difference between an isosceles triangle and an obtuse triangle as they are two different definitions for different kinds of triangles. An isosceles triangle has 2 sides that are the same length and one side that is a different length. This results in two angles that have the same number of degrees and one that is different. Meanwhile an obtuse triangle has one angle that is obtuse, or larger than 90 degrees. It is not possible for any triangle to have two obtuse angles because the sum of two obtuse angles would be greater than 180 degrees. As such, it is not possible for an equilateral triangle to be obtuse as all the angles in an equilateral are 60 degrees. It is possible for an obtuse triangle to be scalene - all the sides and all the angles would have a different size. It is also possible for an obtuse triangle to be an isosceles triangle. This would be a triangle with one large angle and two smaller angles of the same size, and therefore one long side and two shorter sides of the same length.

### Subject:Chemistry

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Question:

How is chemistry connected to everyday life?

Inactive
Martha G.

Chemistry is connected to everyday life because every single thing in the universe is composed of atoms of some type of element. Atoms make up elements, which are the components of everything that exists. When we look around, everything we see and even what we cannot see is made of atoms and elements that interact with each other in specific ways. In the air we breathe, there are invisible molecules of gases such as oxygen and nitrogen, which are elements. Every living thing is made of organic compounds, which are those that are composed of elements such as carbon, oxygen, hydrogen and nitrogen. Even our own bodies are composed of tiny atoms that are bonded together into molecules such as proteins, fats, carbohydrates and lipids. We are also made of water, which is a chemical molecule that is necessary for life. Chemistry helps us to understand the molecular composition of the world around us. It also helps us to understand how atoms bond with each other to form compounds and molecules through chemical reactions. Chemical reactions such as photosynthesis in plants and respiration in animals occur constantly, and make life possible.

### Subject:Algebra

TutorMe
Question:

If j=19; i=16 and z = j - i then, what is value of z?

Inactive
Martha G.

z= 19-16 z=3

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