Answer:
[-4/5]×3/7×15/16×[-14/9]= 1/2
Step-by-step explanation:
hope this helps :)
AB=h can be found with
tan 60° =AB / AC, and AB=h= tan60° x AC
h= 14* 1.73=24.24
Answer:
C. 31.4 ft
Step-by-step explanation:
Given
Diameter (d) = 10 ft
Now
Circumference
= πd
= 3.14 * 10
= 31.4 ft
Hope it will help :)❤
Problem 18)
The distance from J to L is 30 units. We can count out the number of spaces or do subtraction to get 30-0 = 30. I subtracted the number line coordinate of J and L. The result is positive as distance is never negative.
Take 2/3 of this value to get (2/3)*30 = 20 which means that we start at J and add on 20 units to get 0+20 = 20
So the final answer is 20, which is where this point is located on the number line.
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Problem 19)
The distance from A to B is 3 units because |-5-(-2)| = |-5+2| = |-3| = 3
Double this value to get 2*3 = 6
Now add 6 units to the coordinate of point A to get
-5+6 = 1
The location of this point is at 1 on the number line.
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Problem 20)
From J to I, or vice versa, we travel 5 units.
Multiply this by 1.5 to get 1.5*5 = 7.5
So we subtract 7.5 units from 0 (the coordinate of point J) getting us 0-7.5 = -7.5
Final Answer: -7.5
Note: this is the midpoint of -10 and -5 on the number line
Answer:
The 95% confidence interval for the difference is (-0.1888, 0.0202).
Step-by-step explanation:
Difference between proportions:
The distribution of the difference between two proportions has mean of the difference between these proportions and standard deviation is the square root of the sum of the variances. So
In a sample of 86 units made with gold wire, 68 met the specification
This means that:


In a sample of 120 units made with aluminum wire, 105 met the specification.
This means that:


Difference:


Confidence interval:

In which z is the zscore that has a pvalue of
, with
being 1 subtracted by the confidence level.
95% confidence level
So
, z is the value of Z that has a pvalue of
, so
.
Lower bound of the interval:

Upper bound of the interval:

The 95% confidence interval for the difference is (-0.1888, 0.0202).