MATHEMATICS HIGH SCHOOL

Jane just took out $135 from her checking account. If Jane now has a balance of $650 in her account, how much did Jane have in the account before she took out any money? question1: If x represents the variable in the word problem above, explain what the variable should represent. x=_________

Answers

Answer 1

Answer:

Jane have $\$ 785$ in the account before she took out any money and variable $x$ would represent total money.

What is variable ?

Variable a symbol mainly a letter standing in for an unknown numerical value in an equation.

We have,

Money took out $=\$ 135$

Money left in account $=\$ 650$

So,

Total money in account $=$ Money left in account $+$ Money took out

$=650+135$

So, Total money in account $=\$ 785$

And,

If $x$ represents the variable then it would be for total money,

i.e.

$x=650+135$

Hence, we can say that Jane have $\$ 785$ in the account before she took out any money and variable $x$ would represent total money.

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Answer 2

Answer: question1: If x represents the variable in the word problem above, explain what the variable should represent.Then x =785

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Answers

Solution:

The given function is

f(x)= $(4 x^2- 4 x -8)/(2 x)$

f(x)= $(4 x^2)/(2 x)-(4 x)/(2x) -(8)/(2x)\n\n = 2 x -2 -(4)/( x)$

f(x)= 2 x - 2 - $(4)/(x)$

To find the points of Discontinuity

Put, f(x)=0

→ 2 x - 2 - $(4)/(x)$ =0

→2 x² - 2 x - 4=0×x

→2 (x²-x-2)=0

→ x² - x -2=0

Splitting the middle term

→ x² - 2 x + x -2=0

→ x×(x-2)+ 1 × (x-2)=0

→ (x+1) (x-2)=0

Gives, x= -1, and x=2.

So, the graph represented by f(x)= $(4 x^2- 4 x -8)/(2 x)$ is equal to f(x)= 2 x - 2 - $(4)/(x)$ with points of Discontinuity at -1 and 2.

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Answers

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Answers

Answer:

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Step-by-step explanation:

let x%of 50 is 15

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Answers

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Answers

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Answers

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