All categories

2 years ago

which expression represents the amount of money john has collected? john collects $5 for club dues from each member.

Mathematics

1 answer:

Verdich [7]2 years ago

7 0

5.00x (number of people)

You might be interested in

What is the diameter of the circle shown below?

MatroZZZ [7]

Diameter is 12. Diameter is radius times 2. 6 times 2=12

4 0

2 years ago

Read 2 more answers

Let f(x) = xe−x if x ≥ 0 and f(x) = 0 if x < 0<br> Is f a probability density function?

Lynna [10]

Yes. $f(x)$ is a PDF if

• $f(x) \ge 0$ for all $x$ in the support; this is true, since $e^{-x}>0$ for all $x$ , and multiplying a positive number $x$ doesn't change this fact;

• the integral of $f(x)$ over its support is 1; this is also true, since

$\displaystyle \int_{-\infty}^\infty f(x) \, dx = \int_0^\infty xe^{-x} \, dx = 1$

which can be computed by parts.

3 0

1 year ago

Complete the explanation on why it is a good idea to use multiple samples when making comparative inferences about two populatio

ipn [44]

272 differ samples that’s the answer

7 0

1 year ago

The Commutative Property states that the order of terms in an expression does not affect the outcome. Which of the following ope

tigry1 [53]

I think the answer is B

4 0

2 years ago

Solve equation, check for extraneous solutions

fiasKO [112]

Start with

$1=\dfrac{1}{n^2}+\dfrac{n^2-4n-5}{3n^2}$

We observe that both fractions are not defined if $n=0$ . So, we will assume $n \neq 0$ .

We multiply both numerator and denominator of the first fraction by 3 and we sum the two fractions:

$1=\dfrac{3}{3n^2}+\dfrac{n^2-4n-5}{3n^2} = \dfrac{n^2-4n-2}{3n^2}$

We multiply both sides by $3n^2$ :

$n^2-4n-2=3n^2$

We move everything to one side and solve the quadratic equation:

$2n^2+4n+2=0 \iff 2(n^2+2n+1)=0 \iff 2(n+1)^2=0 \iff n+1=0 \iff n=-1$

We check the solution:

$1=\dfrac{1}{1}+\dfrac{1+4-5}{3} \iff 1 = 1+0$

which is true

8 0

2 years ago