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hram777 [196]
3 years ago
11

What sheet metal is required to make a hollow cone of height 24 cm and radius 7 cm?

Mathematics
1 answer:
WARRIOR [948]3 years ago
6 0
44 inch by 24 inch rectangle of metal
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Lady_Fox [76]
The answer is 17 and 31
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3 years ago
What value of x will make the equation below true?<br> 5x = 12x – 28
mash [69]
X = 4
First take 12x off both sides, so -7x=-28
The negatives cancel out, so 7x=28
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pH measurements of a chemical solutions have mean 6.8 with standard deviation 0.02. Assuming all pH measurements of this solutio
aalyn [17]

Answer: 2.14 %

Step-by-step explanation:

Given : pH measurements of a chemical solutions have

Mean :  \mu=6.8

Standard deviation : \sigma=0.02

Let X be the pH reading of a randomly selected customer chemical solution.

We assume  pH measurements of this solution have a nearly symmetric/bell-curve distribution (i.e. normal distribution).

The z-score for the normal distribution is given by :-

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

For x = 6.74

z=\dfrac{6.74-6.8}{0.02}=-3

For x = 6.76

z=\dfrac{6.76-6.8}{0.02}=-2

The p-value =P(6.74

P(z

In percent, 0.0214\times=2.14\%

Hence, the percent of pH measurements reading below 6.74 OR above 6.76 = 2.14%

6 0
3 years ago
If it snows tomorrow the probability is 0.8 that John will practice his trombone if it does not snow tomorrow there is only a 0.
Bas_tet [7]

Answer:

0.68

Step-by-step explanation:

Given that :

P(trombone | snow) = 0.8 ;

P(trombone | no snow) = 0.5

P(snow) = 0.6

P(trombone) = P(trombone | snow) * p(snow) + P(trombone | no snow) * p(no snow)

P(no snow) = 1 - 0.6 = 0.4

Hence,

P(trombone) = P(trombone | snow) * p(snow) + P(trombone | no snow) * p(no snow)

P(trombone) = (0.8 * 0.6) + (0.5 * 0.4)

P(trombone) = 0.48 + 0.20

P(trombone) = 0.68

7 0
3 years ago
Claudia owns a wood house in the country worth $75,000, and the contents
irina [24]

Answer: D $852.00

Step-by-step explanation:

4 0
3 years ago
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