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3 years ago

If 7 L of a solvent costs $73 per liter, then the value of the 7 L of solvent is

Mathematics

1 answer:

Ksenya-84 [330]3 years ago

6 0

Answer:

$511

Step-by-step explanation:

If each liter costs $73$, then 7 liters is 7 times 73, which is $511.

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Tic-tac-toe: In the game of tic-tac-toe, if all moves are performed randomly the probability that the game will end in a draw is

Natasha2012 [34]

Answer:

$P(X \geq 1) = 1-P(X$

And if we find the individual probability we got:

$P(X=0)=(7C0)(0.127)^0 (1-0.127)^{7-0}=0.3865$

And replacing we got:

$P(X \geq 1) = 1-P(X$

Step-by-step explanation:

Previous concepts

The binomial distribution is a "DISCRETE probability distribution that summarizes the probability that a value will take one of two independent values under a given set of parameters. The assumptions for the binomial distribution are that there is only one outcome for each trial, each trial has the same probability of success, and each trial is mutually exclusive, or independent of each other".

Solution to the problem

Let X the random variable of interest, on this case we now that:

$X \sim Binom(n=7, p=0.127)$

The probability mass function for the Binomial distribution is given as:

$P(X)=(nCx)(p)^x (1-p)^{n-x}$

Where (nCx) means combinatory and it's given by this formula:

$nCx=\frac{n!}{(n-x)! x!}$

And we want to find this probability:

$P(X \geq 1)$

And we can use the complement rule and we got:

$P(X \geq 1) = 1-P(X$

And if we find the individual probability we got:

$P(X=0)=(7C0)(0.127)^0 (1-0.127)^{7-0}=0.3865$

And replacing we got:

$P(X \geq 1) = 1-P(X$

6 0

2 years ago

Read 2 more answers

Karen currently has an account balance of $7,062.25. She opened the account 17 years ago with a deposit of $2,640.95. If the int

Setler79 [48]

The interest rate is 0.4833333%

5 0

3 years ago

(08.03)A set of equations is given below:

faltersainse [42]

Answer: Third option

$-x + 2 = 3x - 4.$

Step-by-step explanation:

One of the ways of solving a system of equations is by equating the equations and solving for one of the variables.

In this case we have the system:

$y = -x + 2\\\\y = 3x - 4$

Note that if $y$ is equal $-x + 2$ and also $y$ equals $3x - 4$

Then logically $-x + 2$ must be equal to $3x - 4$ .

We write equality.

$-x + 2 = 3x - 4.$

Then the correct answer is the third option.

We can also solve for the variable x

$-4x = -6\\\\4x = 6\\\\x = \frac{6}{4}\\\\x = \frac{3}{2}$

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3 years ago

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Simplify: A. B. C. D.

GalinKa [24]

Answer:

D. $\frac{79}{6}$

Step-by-step explanation:

$\bigg( \frac{7}{2} - \frac{1}{3} \bigg).( - 2)^{2} + \frac{1}{2} \\ \\ = \bigg( \frac{7 \times 3 - 1 \times 2}{2 \times 3} \bigg).4 + \frac{1}{2} \\ \\ = \bigg( \frac{21 - 2}{6} \bigg).4 + \frac{1}{2} \\ \\ = \frac{19}{6} \times 4 + \frac{1}{2} \\ \\ = \frac{19}{3} \times 2 + \frac{1}{2} \\ \\ = \frac{38}{3} + \frac{1}{2} \\ \\ = \frac{38 \times 2 + 1 \times 3}{3 \times 2} \\ \\ = \frac{76 + 3}{6} \\ \\ = \frac{79}{6}$

5 0

3 years ago

I need help please thanks

ipn [44]

I am so sorry I don't know I suck at math that's why I use this app I have a tutor though please don't get mad I can't delete it

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2 years ago

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