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Kitty [74]
3 years ago
11

What is −3√250 expressed in simplest radical form?

Mathematics
1 answer:
Sindrei [870]3 years ago
6 0

Answer:

-15√10

Step-by-step explanation:

Rewrite.

-3√5² · 10

Pull terms out from under the radical.

-3( |5| √10)

-3(5√10)

Multiply

-15√10

<em>good luck, i hope this helps :)</em>

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The life of a manufacturer's compact fluorescent light bulbs is normal, with mean 12,000 hours and standard deviation 2,000 hour
vitfil [10]

Z value is a numerical  measurement that describe a value relationship to the mean of a group of values. The standard deviations is 1.25 above the mean is 14,500 hours.

<h3>Given information-</h3>

The mean for the bulb is 12,000 hours.

The standard deviation for the bulb is 2000 hours.

Sample value is 14500.

To find out the how many standard deviation is 14500 mean away from the mean the z value of the mean should be calculated.

<h3>Z value</h3>

Z value is a numerical  measurement that describe a value relationship to the mean of a group of values. Z value is the ratio of the difference of the sample value x and mean \mu to the standard deviation. Thus the z value for the given mean \sigma is,

z=\dfrac{x-\mu}{\sigma}

z=\dfrac{14500-1200}{2000}

z=1.25

Thus the standard deviations is 1.25 above the mean is 14,500 hours.

Learn more about the z value here;

brainly.com/question/62233

4 0
2 years ago
Hi please help me as soon as possible:
sammy [17]

Answer:

Percentage = 14.2%

Step-by-step explanation:

<u>Given the following data;</u>

Cost of plane ticket = £588

Airport tax = $130

£1 = $1.34

To find the percentage of the total cost spent on airport tax;

First of all, we would convert the ticket cost in pounds (£) to dollars ($).

Cost of plane ticket = £588 to $ = 588 * 1.34 = $787. 92

Total cost = Cost of plane ticket + Airport tax

Total cost = 787. 92 + 130

Total cost = $917.92

Percentage \; cost = \frac {130}{917.92} * 100

Percentage  = 0.1416 * 100

<em>Percentage cost = 14.16 to 1 d.p = 14.2%</em>

<em>Therefore, the percentage of the total cost spent on airport tax by Rimo is 14.2 percent. </em>

6 0
3 years ago
Compare -15/4 and -3 3/8
muminat

Answer:

-15/4 > -3 3/8

Step-by-step explanation:

I converted -15/4 into a mixed number with a denominator of 8. First, I made it a mixed number (-3 1/4) and then I converted it to eighths (-3 2/8). Compared to -3 3/8, -15/4 is larger.

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3 years ago
The movie, Avatar, earned $760 million in America theaters and $2.022 billion in foreign theaters. How much did Avatar earn worl
SCORPION-xisa [38]

Answer:

2.782 billion

Step-by-step explanation:

5 0
3 years ago
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Please someone help me‼️
Flauer [41]

Answer:

6 m

Step-by-step explanation:

The volume of a cone is found by \frac{\pi r^2h}{3}, so we can plug the values in to get 6pi * r^2 / 3 = 72pi, or 6pi * r^2 = 216 pi, so r^2 = 36 and the radius is 6 m.

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3 years ago
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