3 years ago

What is the value of the expression 4x+y2y−x when x = 2 and y = 4?

2 answers:

6 0

The answer should be the first one, 2. Do you need and explanation?
4x+y/2y-x

Start by replacing all of the variables.
4(2)+4/2(4)-2

Now work multiply.
8+4/8-2

Now add.
12/6

That is your fraction. But you must simplify it.

Its simplifies to 2.

galben [10]3 years ago

4 0

(4(2)+4)/(2(4)-2)
=(8+4)/(8-2)
12/6
=2

You might be interested in

TRUE OR FALSE PICTURE IS SHOWN

Murljashka [212]

Its false of course;))

8 0

3 years ago

Read 2 more answers

a grandmother deposits $6000 in an account that pays 9% compounded monthly. What will be the value of the account at the child'

valkas [14]

now, we're assuming she made the deposit at the child's birth, namely when year was 0, at the child's twenty-first birthday that'll be 21 years later.

$~~~~~~ \textit{Compound Interest Earned Amount} \\\\ A=P\left(1+\frac{r}{n}\right)^{nt} \quad \begin{cases} A=\textit{accumulated amount}\\ P=\textit{original amount deposited}\dotfill &\$6000\\ r=rate\to 9\%\to \frac{9}{100}\dotfill &0.09\\ n= \begin{array}{llll} \textit{times it compounds per year}\\ \textit{monthly, thus twelve} \end{array}\dotfill &12\\ t=years\dotfill &21 \end{cases} \\\\\\ A=6000\left(1+\frac{0.09}{12}\right)^{12\cdot 21}\implies A=6000(1.0075)^{252}\implies A\approx 39437.11$