Terrance used this expression to find the final price, in dollars, of a hat that is discounted 30% off the original price of $20

Mathematics

1 answer:

Vlad [161]3 years ago

7 0

Answer:

20-0.7

Step-by-step explanation:

You might be interested in

A binomial probability experiment is conducted with the given parameters. Compute the probability of x successes in the n indepe

Mila [183]

<h3>Answer: 0.1319</h3>

==========================================

Work Shown:

$P(x) = (_n C_x)*(p)^x*(1-p)^{n-x}\\\\P(14) = (_{15} C_{14})*(0.8)^{14}*(1-0.8)^{15-14}\\\\P(14) = 15*(0.8)^{14}*(0.2)^{1}\\\\P(14) \approx 0.13194139533312 \\\\P(14) \approx \boldsymbol{0.1319} \\\\$

Side note: you can use the nCr formula to compute $_{15} C_{14}$ ; however, it's much quicker to use the shortcut formula $_{n} C_{n-1} = n$ . You can also use Pascal's Triangle to find the value of $_{15} C_{14}$

3 0

2 years ago

If a person bikes 6 miles in 15 minutes, how far can she bike in 1.5 hours?

Natalka [10]

Answer:

$36\:miles$

Step-by-step explanation:

There is one-and-a-half hour in ninety minutes, so multiply 6 by 15 to get 90, then whatever is done to the bottom is also done to the top, so you square 6 to get 36.

I am joyous to assist you anytime.

8 0

3 years ago

$4000 for 2years at 5% compounded quarterley

NeTakaya

$\bf \qquad \textit{Compound Interest Earned Amount}
\\\\
A=P\left(1+\frac{r}{n}\right)^{nt}
\qquad 
\begin{cases}
A=\textit{accumulated amount}\\
P=\textit{original amount deposited}\to &\$4000\\
r=rate\to 5\%\to \frac{5}{100}\to &0.05\\
n=
\begin{array}{llll}
\textit{times it compounds per year}\\
\textit{quarterly, meaning 4 times}
\end{array}\to &4\\

t=years\to &2
\end{cases}$