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3 years ago

10

Please helpppppppp meee

1 answer:

Alexeev081 [22]3 years ago

4 0

Answer: 192 cm^2

Step-by-step explanation:

With parallelograms like this, you an just multiply the width and length to find the area. If you cut the shape up in a certain way, it would make a rectangle, so the formula length*width=area would also apply to parallelograms.

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The 2010 General Social Survey reported a sample where about 48% of US residents thought marijuana should be made legal. If we w

Sati [7]

Answer:

The sample size is $n = 600$

Step-by-step explanation:

From the question we are told that

The sample proportion is $\r p = 0.48$

The margin of error is $MOE = 0.04$

Given that the confidence level is 95% the level of significance is mathematically represented as

$\alpha = 100 - 95$

$\alpha = 5 \%$

$\alpha = 0.05$

Next we obtain the critical value of $\frac{\alpha }{2}$ from the normal distribution table , the values is

$Z_{\frac{\alpha }{2} } = 1.96$

The reason we are obtaining critical value of $\frac{\alpha }{2}$ instead of $\alpha$ is because

$\alpha$ represents the area under the normal curve where the confidence level interval ( $1-\alpha$ ) did not cover which include both the left and right tail while

$\frac{\alpha }{2}$ is just the area of one tail which what we required to calculate the margin of error

Generally the margin of error is mathematically represented as

$MOE = Z_{\frac{\alpha }{2} } * \sqrt{ \frac{\r p(1- \r p )}{n} }$

substituting values

$0.04= 1.96* \sqrt{ \frac{0.48(1- 0.48 )}{n} }$

$0.02041 = \sqrt{ \frac{0.48(52 )}{n} }$

$0.02041 = \sqrt{ \frac{ 0.2496}{n} }$

$0.02041^2 = \frac{ 0.2496}{n}$

$0.0004166 = \frac{ 0.2496}{n}$

=> $n = 600$

5 0

3 years ago

There were 4.24 liters of Solution B available in the science lab. Lotte used 0.38 of that amount. By rounding to the greatest p

Blizzard [7]

Answer:

B:0.16

Step-by-step explanation:

Because you keep adding it and you will soon have 4.24 liters

8 0

3 years ago

89 POINTS!!! You are given an isosceles trapezoid ABCD with median XY. Complete the following.

Sauron [17]

Answer:

(Given m∠DCB = 105, m∠DAB = 75) m∠ADC=75, m∠AXY=105, m∠DYX=105, m∠BXY=75, m∠CYX=75, m∠ABC=105

Step-by-step explanation:

Definition of consecutive interior angles

3 0

3 years ago

What is the inequality pls help

Colt1911 [192]

Answer:

$y$

Step-by-step explanation:

Choosing two points on the dotted line to find equation of line.

The points are:

$(0,6)$ and $(4,3)$

Slope of line can be calculated as:

$m=\frac{y_2-y_1}{x_2-x_1}$

$m=\frac{3-6}{4-0}$

$m=\frac{-3}{4}$

Using point slope equation to find equation of dotted line.

$y=mx+b$

where $m$ represents slope of line and $b$ represents y-intercept.

The y-intercept for the dotted line = 6 as it intersects the y-axis at (0,6)

So, the equation of line is:

$y=-\frac{3}{4}x+6$

The dotted line indicates that the line is not included in the solution.

The solution of the inequality is below the dotted line, so thus it would be less than the line.

So, the inequality would be:

$y$

7 0

3 years ago

Identify the terms and like terms in the question 3n+7-n-3

Temka [501]

Answer:

like terms: (3n,-n),(7,-3)

Step-by-step explanation:

4 0

2 years ago

Read 2 more answers