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yan [13]
3 years ago
15

Sara drove from X to Y in 4 hours at a speed of 55 mph. How far is X from Y?

Mathematics
2 answers:
Sergio039 [100]3 years ago
8 0

Answer:

220 Miles

Step-by-step explanation:

4 times 55 is 220

mrs_skeptik [129]3 years ago
3 0

Answer:

220

Step-by-step explanation:

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As discussed in Exercise 6.10, the General Social Survey reported a sample where about 61% of US residents thought marijuana sho
Maslowich

Answer: 2285

Step-by-step explanation:

Formula to find the sample size is given by :-

n=p(1-p)(\dfrac{z_c}{E})^2

, where p = prior estimate of population proportion.

E= Margin of error.

z_c = z-value for confidence interval of c.

Given : Confidence interval : 95%

From the z-value table , the z-value for 95% confidence interval = z_c=1.96

The General Social Survey reported a sample where about 61% of US residents thought marijuana should be made legal.

i.e. the prior estimate of population proportion of US residents thought marijuana should be made legal : p=0.61  

 [∵ sample proportion is the best estimate for population proportion.]

Margin of error : E= 2%=0.02

Now, the required minimum sample size would be :-

n=0.61(1-0.61)(\dfrac{1.96}{0.02})^2

Simplify ,

n=0.2379\times9604=2284.7916\approx2285

Thus , we need to survey <u>2285</u> Americans .

4 0
3 years ago
Please help!!!
kifflom [539]

Answer: If I am correct, I do believe that A is equal to F, meaning that the angle of A, which is 100°, is also the angle of F.

Step-by-step explanation:

Sorry if I am wrong I'm new at this.

8 0
3 years ago
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vector v has a horizontal vector component with magnitude 19 and a vertical vector component with magnitude 35. what is the acut
vladimir2022 [97]

9514 1404 393

Answer:

  61.5°

Step-by-step explanation:

The tangent relation is useful here. The angle is opposite the vertical side and adjacent to the horizontal side of the right triangle.

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  tan(α) = 35/19

  α = arctan(35/19) ≈ 61.5°

The angle made by <em>v</em> and the positive x-axis is 61.5°.

4 0
2 years ago
In jeremiah class 2/5 of the students are boys. What percent of the in jeremiah's class are boys
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40% are boys. divide 2 by 5 and then multiply by 100
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Last year, a large trucking company delivered 5.5x10^5 tons of goods with an average value of $23,000 per ton. What was the tota
AleksandrR [38]
The total value is:
5. 5 x 10 ^5 * 23 x 10^3 = 
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= $1.265 x 10^10
Answer: B )
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