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4 years ago

Someone help PLZ.

Mathematics

1 answer:

Novay_Z [31]4 years ago

3 0

a and c i think

the blue circle is all the people who had brothers one name was in the blue circle so one person had a brother but the in between part of the too circles are who had both a brother and a sister so the is one name in the between purple so you count that one to for brother and for sisters

there were 2 people that had brother

and four people that had sisters

and one that had both

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Lin is saving $300 per year in an account that pays 4.5% interest per year, compounded annually. How do I find the value after 2

vagabundo [1.1K]

The value after 20 years is $ 723.514

Solution:

Formula for Amount compounded annually is as follows:

$\mathrm{A}=P\left(1+\frac{r}{100}\right)^{n}$

Where,

"A" is the total amount

"p" is the principal sum

"r" is the rate of interest

"n" is the number of years

From given question,

p = $ 300

r = 4.5 %

n = 20 years

Substituting the values we get,

$\begin{aligned}&A=300\left(1+\frac{4.5}{100}\right)^{20}\\\\&A=300(1+0.045)^{20}\\\\&A=300(1.045)^{20}\\\\&A=300 \times 2.41171=723.514\end{aligned}$

Thus value after 20 years is $ 723.514

7 0

4 years ago

Mr.majors ordered six hot dogs and a bucket of popcorn at the concession stand. If the popcorn was 3.20 and the total was 18.20

rjkz [21]

Answer:

The price of one hotdog is $2.50

Step-by-step explanation:

You can first write this out as an equation to make it easier to solve.

Lets say that x= the price of a hot dog and y= the price of popcorn

The equation would be:

6x + y = 18.20

We know that y= 3.20 so we can subtract 3.20 from 18.20. That will leave us with 6x = 15

Then, we just have to divide both sides by 6 and our answer comes out as x = 2.50

(this is one of my first answers so apologies for any mistakes)

6 0

4 years ago

PLEASE HELP MEEEEEEREEEE

postnew [5]

Answer:

$- \frac{5}{6}$

Step-by-step explanation:

The first thing to do is solve for the root. A trick is to ignore the numerator and only focus on the denominator in the root. So it is a third root so you have to find out what multiplied by itself three times is 343. The correct answer for that is 7. So now we must introduce the numerator back, so it would be:

$\frac{1}{7}$