so it will end up at 6y-6
you need to combine everything that does not have an exponent (example. a, x, y) and you combine the ones that have exponents together. and therefore you get 6y-6 (remember positive and negative signs)
(a), (b), (d) and (f) are correct statements
A=3b+2
a-2=3b
(a-2)/3=b
therefore b=(a-2)/3
The student made an error in <u>step 3</u>. To correct this error, he should define <u>side AY</u> in terms of <u>angle X</u>. <u>Pythagorean theorem</u> relates sides x, y, z, and <u>angle X</u>
<h3>The law of cosine.</h3>
In Trigonometry, law of cosine (cos) is given by this mathematical expression:
cosθ = Opp/Hyp
<u>Where:</u>
- Opp is the opposite side of a right-angled triangle.
- Hyp is the hypotenuse of a right-angled triangle.
In this scenario, we can logically deduce that the student made an error in <u>step 3</u>. To correct this error, he should define <u>side AY</u> in terms of <u>angle X</u>.
After correcting this error, the student can use the <u>Pythagorean theorem</u> to relate sides x, y, z, and <u>angle X</u>.
Read more on law of cosine here: brainly.com/question/27613782
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All real numbers is the domain
{x | x ∈ R}
