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Maru [420]
3 years ago
12

What is the result when the number 64 is decreased by 8% ? Round your answer to the nearest te th

Mathematics
1 answer:
VladimirAG [237]3 years ago
5 0

Answer:

58.9

Step-by-step explanation:

64-(8% of 64)=64-(8/100)×64=64(1-8/100)=

64×92/100=58.88

Rounded to tenth: 58.9

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A line drawn on the coordinate plane passes through the points (5.3) and (9,- 13). What is the equation of the line?
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Answer:

Y=-4x+3

Step-by-step explanation:

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3 years ago
Suppose you are given a square with an inscribed circle. If the area of the square is 36 m^2. What is the area of the circle?
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If the square has sides of 6 the circle has a radius of 3 so it's area is 9pi
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How many points are collinear with points Cand D?
asambeis [7]

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This one point is point U since it is on line segment CD. In contrast, a point like point E is not on line CD, so E is not collinear with C and D.

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3 years ago
A manufacturer of golf equipment wishes to estimate the number of left-handed golfers. A previous study indicates that the propo
never [62]

Answer:

A sample of 997 is needed.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of \pi, and a confidence level of 1-\alpha, we have the following confidence interval of proportions.

\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}

In which

z is the z-score that has a p-value of 1 - \frac{\alpha}{2}.

The margin of error is of:

M = z\sqrt{\frac{\pi(1-\pi)}{n}}

A previous study indicates that the proportion of left-handed golfers is 8%.

This means that \pi = 0.08

98% confidence level

So \alpha = 0.02, z is the value of Z that has a p-value of 1 - \frac{0.02}{2} = 0.99, so Z = 2.327.  

How large a sample is needed in order to be 98% confident that the sample proportion will not differ from the true proportion by more than 2%?

This is n for which M = 0.02. So

M = z\sqrt{\frac{\pi(1-\pi)}{n}}

0.02 = 2.327\sqrt{\frac{0.08*0.92}{n}}

0.02\sqrt{n} = 2.327\sqrt{0.08*0.92}

\sqrt{n} = \frac{2.327\sqrt{0.08*0.92}}{0.02}

(\sqrt{n})^2 = (\frac{2.327\sqrt{0.08*0.92}}{0.02})^2

n = 996.3

Rounding up:

A sample of 997 is needed.

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3 years ago
Mach the Zodiac to the Months (In order of Zodiac) (NO HELP FROM FRIENDS OR INTERNET)
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Answer:

Virgo:september-october,

Step-by-step explanation:

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2 years ago
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