All categories

3 years ago

She buys 1000 candy bars for $350. What is the unit cost per candy bar?

Mathematics

1 answer:

True [87]3 years ago

4 0

1000/350 = $2.85
here I just divided the amount of candy bars she bought by the total cost.

You might be interested in

Solve 2(x + 1) = 2x + 2.

Tom [10]

$2(x + 1) = 2x + 2\\\\
2x+2=2x+2\\\\
x\in\mathbb{R}$

3 0

3 years ago

Find out the number of combinations and the number of permutations for 8 objects taken 6 at a time. Express your answer in exact

umka2103 [35]

Solution:

The permutation formula is expressed as

$\begin{gathered} P^n_r=\frac{n!}{(n-r)!} \\ \end{gathered}$

The combination formula is expressed as

$\begin{gathered} C^n_r=\frac{n!}{(n-r)!r!} \\ \\ \end{gathered}$

where

$\begin{gathered} n\Rightarrow total\text{ number of objects} \\ r\Rightarrow number\text{ of object selected} \end{gathered}$

Given that 6 objects are taken at a time from 8, this implies that

$\begin{gathered} n=8 \\ r=6 \end{gathered}$

Thus,

Number of permuations:

$\begin{gathered} P^8_6=\frac{8!}{(8-6)!} \\ =\frac{8!}{2!}=\frac{8\times7\times6\times5\times4\times3\times2!}{2!} \\ 2!\text{ cancel out, thus we have} \\ \begin{equation*} 8\times7\times6\times5\times4\times3 \end{equation*} \\ \Rightarrow P_6^8=20160 \end{gathered}$

Number of combinations:

$\begin{gathered} C^8_6=\frac{8!}{(8-6)!6!} \\ =\frac{8!}{2!\times6!}=\frac{8\times7\times6!}{6!\times2\times1} \\ 6!\text{ cancel out, thus we have} \\ \frac{8\times7}{2} \\ \Rightarrow C_6^8=28 \end{gathered}$

Hence, there are 28 combinations and 20160 permutations.

7 0

1 year ago

What’s the answer to this? I’ll mark you brainliest if you tell me the answer/what to put 3

fgiga [73]

Answer:

domain is basically x and range is y, so -2,5 -2 is domain and 5 is range

Step-by-step explanation:

3 0

3 years ago

Please help! I will give Brainliest!<br> Who is correct?

DerKrebs [107]

Annie is correct, and I’ll tel u why you can make the same triangle but just flip it so it not going the same way see tell me if u got it correct.

8 0

3 years ago

Read 2 more answers

Which of the following describes a rate?

malfutka [58]

Answer:

All of them

Step-by-step explanation:

8 0

3 years ago