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2 years ago

Y=x3 is that a function?

Mathematics

1 answer:

kotykmax [81]2 years ago

5 0

Answer:

yes

Step-by-step explanation:

y(x) is even or odd according as y(−x)=±y(x) . Here, #y(-x)=-(-x)^3=-(-x^3)=x^3=-y(x). So, y is an odd function of x.

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A principal of $4,570 is placed in an account that earns 4. 5% interest. If the interest is compounded annually, how much money

iVinArrow [24]

$~~~~~~ \textit{Compound Interest Earned Amount} \\\\ A=P\left(1+\frac{r}{n}\right)^{nt} \quad \begin{cases} A=\textit{accumulated amount}\\ P=\textit{original amount deposited}\dotfill &\$4570\\ r=rate\to 4.5\%\to \frac{4.5}{100}\dotfill &0.045\\ n= \begin{array}{llll} \textit{times it compounds per year}\\ \textit{annually, thus once} \end{array}\dotfill &1\\ t=years\dotfill &5 \end{cases} \\\\\\ A=4570\left(1+\frac{0.045}{1}\right)^{1\cdot 5}\implies A=4570(1.045)^5\implies A\approx 5695.05$

8 0

2 years ago

Find the area : (see question in picture)

quester [9]

I cant really see the full question

4 0

2 years ago

Beakers X and Y contain some water. If 50 ml of water is transferred from Beaker X

eduard

Answer:

140 ml

Step-by-step explanation:

Let x be the amount of water in Beaker X and y be the amount of water in Beaker Y.

Then we get following equations:

First part

x - 50 = 3/7(y + 50)
7x -350 = 3y + 150
7x = 3y + 500

Second part

x + 100 = 4(y - 100)
x + 100 = 4y - 400
x = 4y - 500

Substitute x in first equation:

7(4y - 500) = 3y + 500
28y - 3500 = 3y + 500
28y - 3y = 500 + 3500
25y = 4000
y = 4000/25
y = 160 ml

Then finding x:

x = 4*160 - 500
x = 640 - 500
x = 140 ml

Initial amount of water in Beaker X is 140 ml, in Beaker Y is 160 ml

4 0

3 years ago

Please help me ASAP im struggling :(

erik [133]

Answer:

The answer is C!!

Step-by-step explanation:

7 0

3 years ago

How many hours would someone who earns $7.50 per hour have to work to earn $116.25?

Levart [38]

Lets look at the information we have:-

$7.50 per hour
How many hours to earn $116.25?

To answer this we will divide. Lets do it:-

116.25 ÷ 7.50 = 15.5
15 and a half hours.

CHECK OUR WORK:-

15.5 × 7.50 = 116.25
We were RIGHT!!

So, to earn $116.25 when getting paid $7.50 per hour you would need to work for 15 and a half hours.

Hope I helped ya!!!

6 0

3 years ago

Read 2 more answers