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charle [14.2K]
3 years ago
10

Andy loves taking notes. He started the school year with 45 pages of notes from last year and he plans to take 2 pages of notes

during each class he attends this year. When Andy has 125 pages of notes how many classes will he have attended?
Mathematics
2 answers:
Varvara68 [4.7K]3 years ago
5 0

40 classes

125-40=80

80/2 = 40

storchak [24]3 years ago
3 0
You can solve this by doing (125-45) (which equals 80) divided by 2 since he is taking 2 pages of notes everyday and 80 / 2 equals 40. Hope this helps!
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2 years ago
Explain how to work out these type of questions please!
bixtya [17]

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Hope this helps. - M
7 0
3 years ago
Read 2 more answers
Rewrite the expression $6j^2 - 4j 12$ in the form $c(j p)^2 q$, where $c$, $p$, and $q$ are constants. What is $\frac{q}{p}$
solniwko [45]

Rewrite the expression  6j^2 - 4j + 12$ in the form $c(j + p)^2 + q$, where $c$, $p$, and $q$ are constants. What is $\frac{q}{p}$

The ratio of \frac{q}{p}  = - 34

How to solve such questions?

Such Questions can be easily solved just by some Algebraic manipulations and simplifications. We just try to make our expression in the form which question asks us. This is the best method to solve such questions as it will definitely lead us to correct answers. One such method is completing the square method.

Completing the square is a method that is used for converting a quadratic expression of the form ax^{2} + bx + c to the vertex form

a(x - h)^{2} + k. The most common application of completing the square is in solving a quadratic equation. This can be done by rearranging the expression obtained after completing the square: a(x + m)^{2} + n, such that the left side is a perfect square trinomial

$6j^2 - 4j +12$

=  $6(j^2 - \frac{2}{3} j )+12$

= $6(j^2 - \frac{2}{3} j  +  \frac{1}{9}  )+\frac{102}{9}                   (Completing Square method)

=6( j- \frac{1}{3} )^{2}  +  \frac{34}{3}

On comparing with the given equation we get

p = - \frac{1}{3}     and q = \frac{34}{3}

∴ \frac{q}{p} = \frac{\frac{34}{3} }{\frac{-1}{3} }

= - 34

Learn more about completing the square method here :

brainly.com/question/26107616

#SPJ4

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