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olga nikolaevna [1]
2 years ago
9

Math* please help!!!!

Mathematics
2 answers:
jek_recluse [69]2 years ago
8 0

Answer:

I think its 19.1

Step-by-step explanation:

14 + 5.1

Maybe try

VikaD [51]2 years ago
5 0
We need to use the formula for Area of trapezium.

Area = ((a+b)h)/2

85.95 = ((14+5.1)h)/2
19.1h/2 = 85.95
19.1h = 171.9
h = 171.9/19.1
h = 9
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The number of failures of a testing instrument from contamination particles on the product is a Poisson random variable with a m
photoshop1234 [79]

Answer: 0.1353

Step-by-step explanation:

Given : The mean of failures =  0.025 per hour.

Then  for 8 hours , the mean of failures = \lambda=8\times0.25=2 per eight hours.

Let X be the number of failures.

The formula to calculate the Poisson distribution is given by :_

P(X=x)=\dfrac{e^{-\lambda}\lambda^x}{x!}

Now, the probability that the instrument does not fail in an 8-hour shift :-

P(X=0)=\dfrac{e^{-2}2^0}{0!}=0.1353352\approx0.1353

Hence, the the probability that the instrument does not fail in an 8-hour shift = 0.1353

7 0
3 years ago
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strojnjashka [21]

Answer:

Volume of the cylinder = 602.88 square centimeters

Step-by-step explanation:

Given that:

Radius of cylinder = 4 cm

Height of cylinder = 12 cm

Volume of a cylinder is given by the following formula;

Volume = πr²h

Putting π = 3.14, r = 4 and h = 12 in the formula

Volume = 3.14 * (4)² * 12

Volume = 3.14 * 16 * 12

Volume = 602.88 square centimeters

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Volume of the cylinder = 602.88 square centimeters

5 0
3 years ago
Factorise the following 5y^2-20y-8z+2yz
andre [41]

Answer:

(5y+2z)(y-4)

Step-by-step explanation:

5y^2-20y-8z+2yz=\\5y^2-20y+2yz-8z=\\5y(y-4)+2z(y-4)=\\(5y+2z)(y-4)

8 0
3 years ago
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Jlenok [28]

Answer:

10=10

Step-by-step explanation:

y-3x+15=10

y=3x-15+10

y=3x-5

subtitute y=3x-5 in the above equation:

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-5+15=10

10=10

(i hope this is the way you want the answer but at least I think it is correct)

3 0
3 years ago
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satela [25.4K]

Answer:

a.6.66

b.384

c.860

d.166

Step-by-step explanation:

6 0
3 years ago
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