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Nookie1986 [14]

3 years ago

15

Which is a reasonable first step that can be used to solve the equation 4X+3(x+2) = 5(2x-3)?

2 answers:

Bezzdna [24]3 years ago

3 0

Answer:

The reasonable first step would be to distribute.

Step-by-step explanation:

4x+3(x+2)=5(2x-3)

4x+3x+6=10x-15

7x+6=10x-15(subtract 7x from left side, to the right side, add 15 to the left side)

21=3x (Divide both sides by 3)

7=x

garri49 [273]3 years ago

3 0

Answer: A

Step-by-step explanation:

I just took the test

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magazine provided results from a poll of adults who were asked to identify their favorite pie. Among the respondents, % chose

Alex73 [517]

Complete Question

A magazine provided results from a poll of 500 adults who were asked to identify their favorite pie. Among the 500 respondents, 12 % chose chocolate pie, and the margin of error was given as plus or minus 5 percentage points.What values do $\r p , \ \r q$ , n, E, and p represent? If the confidence level is 90%, what is the value of $\alpha$ ?

Answer:

a

$\r p$ is the sample proportion $\r p = 0.12$

$n$ is the sample size is $n = 500$

$E$ is the margin of error is $E = 0.05$

$\r q$ represents the proportion of those that did not chose chocolate pie i.e $\r q = 1- \r p$

b

$\alpha = 10\%$

Step-by-step explanation:

Here

$\r p$ is the sample proportion $\r p = 0.12$

$n$ is the sample size is $n = 500$

$\r q$ represents the proportion of those that did not chose chocolate pie i.e

$\r q = 1- \r p$

$\r q = 1- 0.12$

$\r q = 0.88$

$E$ is the margin of error is $E = 0.05$

Generally $\alpha$ is the level of significance and it value is mathematically evaluated as

$\alpha = ( 100 - C )\%$

Where $C$ is the confidence level which is given in this question as $C = 90 \%$

So

$\alpha = ( 100 - 90 )\%$

$\alpha = 10\%$

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3 years ago

Please determine if the relationship is linear, exponential, or quadratic. justify your answer.

r-ruslan [8.4K]

Answer:

This function is a quadratic.

Explanation:

If you sketch a graph, you will see the points form a U, representing a quadratic function.

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Help please!! Don’t understand! 6th grade math

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Answer:

4. is 6.6

Step-by-step explanation:

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2 Points<br> Which of the following is(are) the solution(s) to . x+6 = 2x - 1?

seropon [69]

Answer:

x = 7

Step by step explanation:

<em>minus</em><em> </em><em>x</em><em> </em><em>on</em><em> </em><em>both</em><em> </em><em>sides</em>

6 = x -1

<em>add</em><em> </em><em>1</em><em> </em><em>on</em><em> </em><em>both</em><em> </em><em>sides</em>

<em>x</em><em> </em><em>=</em><em> </em><em>7</em>

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3 years ago