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4 years ago

Ella’s geometry teacher asked each student to devise a problem and write out its solution. Here is Ella’s work:

Mathematics

2 answers:

Vaselesa [24]4 years ago

7 0

Answer:

Ellas procedure and conclusion are incorrect

Step-by-step explanation:

Marta_Voda [28]4 years ago

4 0

Answer:Ella's Procedure And Conclusion are incorrect

Step-by-step explanation:

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Help me im having some trouble but its really easy

zhuklara [117]

The fractions are equal

5 0

3 years ago

Read 2 more answers

X squared minus 4xy plus 3y squared (apply all techniques)

grin007 [14]

Factoring:

your equation: x^-4xy+3y^
now figure out what adds to -4 and multiplied to +3 (-3&-1)
use that information to factor.
you get: (x-3y)(x-y)
now use the distributive property to make sure it's the right answer: x^-xy-3xy+3y^
this means (x-3y)(x-y) is correct.
hope this helped :)

3 0

3 years ago

A standard six-sided die was rolled a number of times, and the results were recorded in the table below. Use this information to

Maru [420]

Answer:

$P(Even) = 0.547$

Step-by-step explanation:

Given

$\begin{array}{ccccccc}{Sides} & {1} & {2} & {3} & {4} & {5} & {6} \ \\ {Freq} & {42} & {51} & {39} & {52} & {44} & {48} \ \end{array}$

Required

P(Even)

The even sides are: 2, 4, 6

So:

$P(Even) = P(2) + P(4) + P(6)$

This is then calculated as:

$P(Even) = \frac{n(2)}{Total} + \frac{n(4)}{Total} + \frac{n(6)}{Total}$

Replace n(2), n(4), n(6) with their frequencies

$P(Even) = \frac{51}{Total} + \frac{52}{Total} + \frac{48}{Total}$

The total frequency is:

$Total =42+51+39+52+44+48$

$Total =276$

So:

$P(Even) = \frac{51}{Total} + \frac{52}{Total} + \frac{48}{Total}$

$P(Even) = \frac{51}{276} + \frac{52}{276} + \frac{48}{276}$

Take LCM

$P(Even) = \frac{51+52+48}{276}$

$P(Even) = \frac{151}{276}$

$P(Even) = 0.547$ --- approximated

8 0

3 years ago

Evaluate. (−2 5 2 ) 2

katovenus [111]

Answer:

-63504

Step-by-step explanation:

3 0

3 years ago

A model is an estimate or approximation of a data set. In the real world, there are too many variables to know exactly what will

Ivan

Answer:

A model is an estimate of a data set.

A useful model can be used to make predictions.

Step-by-step explanation:

There are various models used in mathematics which are used to predict variables. The regression model is used to predict the relation between two variables. There are various other models which help to predict the future events and outcome of these events.

6 0

3 years ago