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2 years ago

Please help me I am stressed it is ratio tables

Mathematics

1 answer:

Oduvanchick [21]2 years ago

5 0

Answer:

1/2/3/4/5/32

3/6/9/12/15/96

1/2/3/4/5/12

8/16/24/32/96

2/4/6/8/10/12

3/6/9/12/15/18

Step-by-step explanation:

ratios are basically in "#:#" form. then put that in a table. remember that for each one of one thing, it is equivalent to another thing. it might be easy to count it. good luck

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(60 + 10)<br> 130<br> Solve for a

forsale [732]

Answer:

Step-by-step explanation:

here you go mate'

step 1

(60 + 10)130 equation

step 2

(60 + 10)130 simplify with the brackets

step 3

130(70) multiply the numbers

answer

9100

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2 years ago

What is 67,235 written as a number name

BaLLatris [955]

Answer:

sixty seven thousand two hundred thirty five

5 0

3 years ago

Read 2 more answers

Let X1, X2, ... , Xn be a random sample from N(μ, σ2), where the mean θ = μ is such that −[infinity] < θ < [infinity] and

Sliva [168]

Answer:

$l'(\theta) = \frac{1}{\sigma^2} \sum_{i=1}^n (X_i -\theta)$

And then the maximum occurs when $l'(\theta) = 0$ , and that is only satisfied if and only if:

$\hat \theta = \bar X$

Step-by-step explanation:

For this case we have a random sample $X_1 ,X_2,...,X_n$ where $X_i \sim N(\mu=\theta, \sigma)$ where $\sigma$ is fixed. And we want to show that the maximum likehood estimator for $\theta = \bar X$ .

The first step is obtain the probability distribution function for the random variable X. For this case each $X_i , i=1,...n$ have the following density function:

$f(x_i | \theta,\sigma^2) = \frac{1}{\sqrt{2\pi}\sigma} exp^{-\frac{(x-\theta)^2}{2\sigma^2}} , -\infty \leq x \leq \infty$

The likehood function is given by:

$L(\theta) = \prod_{i=1}^n f(x_i)$

Assuming independence between the random sample, and replacing the density function we have this:

$L(\theta) = (\frac{1}{\sqrt{2\pi \sigma^2}})^n exp (-\frac{1}{2\sigma^2} \sum_{i=1}^n (X_i-\theta)^2)$

Taking the natural log on btoh sides we got:

$l(\theta) = -\frac{n}{2} ln(\sqrt{2\pi\sigma^2}) - \frac{1}{2\sigma^2} \sum_{i=1}^n (X_i -\theta)^2$

Now if we take the derivate respect $\theta$ we will see this:

$l'(\theta) = \frac{1}{\sigma^2} \sum_{i=1}^n (X_i -\theta)$

And then the maximum occurs when $l'(\theta) = 0$ , and that is only satisfied if and only if:

$\hat \theta = \bar X$

6 0

3 years ago

if one inch represents 14 feet how many inches would you use to make a scale drawing of a building that is 199 feet

gayaneshka [121]

Answer:

14.2 inches

Step-by-step explanation:

Given

1 inch = 14 feet

Required

Find the equivalent of 199 feet

Write out the given expression;

1 inch = 14 feet

Divide both sides by 14

$\frac{1\ inch}{14} = \frac{14\ feet}{14}$

$\frac{1\ inch}{14} = 1\ foot$

$1 foot = \frac{1}{14}inch$

Let x represent the equivalent of 199 feet in inches;

Such that:

$x = 199\ feet$

$x = 199 * 1 foot$

Substitute $1 foot = \frac{1}{14}inch$

$x = 199 * 1 foot$ becomes

$x = 199 * \frac{1}{14} inch$

$x = \frac{199}{14} inch$

$x = 14.2142857143 inch$

<em>x = 14.2 inches (Approximated)</em>

6 0

3 years ago

Please solve this. And make sure to show your work.

Sonja [21]

The ares of the square is 9 * 9 = 81 m^2
The area of the 4 corners together is pi * r^2 = pi * 4.5^2 = 63.6 m^2
The shaded region is 81 - 63.6 = 17.4 m^2

8 0

3 years ago