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# Tutor profile: Amy G.

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Amy G.
Maths and ESL Tutor with 2 years exoerience.
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## Questions

### Subject:Linear Algebra

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Question:

What is the sum of (2,4) and (1,5)?

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Amy G.

(2,4) and (1,5) are called vectors and are in the form (x,y). In order to add them together, we add the x-coordinates together and the y-coordinates together. i.e. (2+1, 4+5) = (3,9)

### Subject:Trigonometry

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Question:

A nursery plants a new tree and attaches a guy wire to help support the tree while its roots take hold. An eight-foot wire is attached to the tree and to a stake in the ground. From the stake in the ground the angle of elevation of the connection with the tree is 42º. Find to the nearest tenth of a foot, the height of the connection point on the tree.

Inactive
Amy G.

A "guy" wire is a support wire used to hold a newly planted tree in place, preventing it from bending or up-rooting during high winds. • The "angle of elevation" is from the ground up. • It is assumed that the tree is vertical, making it perpendicular with the ground. • This problem deals with "opposite" and "hypotenuse" making it a sine problem. sin(42)=x÷8 x=8 x sin(42) x=5.4'

### Subject:Basic Math

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Question:

Express 71/1000 as a decimal.

Inactive
Amy G.

This question is asking you to divide 71 by 1000 (71÷1000). All we need to do to achieve is move the decimal place three 'spaces' to the left. The decimal place is after the 1 in the number 71. Moving the decimal 1 place to the left would make it 7.1, another place 0.71 and a third 0.071. The answer is 0.071

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