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2 years ago

PLEASE ANSWER!!!!!!!!!!

Mathematics

1 answer:

Travka [436]2 years ago

8 0

Answer:

use air math bro it will show you all the answers to that

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Find the sum: (3x2 + 5x − 8) + (5x2 − 13x − 5)

Trava [24]

The given expressions are $3x^{2}+5x-8$ and $5x^{2}-13x-5$

We have to find the sum of the given expressions,

$(3x^{2}+5x-8)+(5x^{2}-13x-5)$

Combining the like terms of both the expressions, we get

$(3x^{2}+5x^{2})+(5x-13x)+(-8-5)$

= $8x^{2}-8x-13$ .

8 0

3 years ago

A Geiger counter counts the number of alpha particles from radioactive material. Over a long period of tune, an average of 28 pa

patriot [66]

Answer:

Part I

p(x=1)=0.0000

p(x=2)=0.0000

Part II

p(x)=0.11

Step-by-step explanation:

For Poisson distribution:

$p(X=x)=e^-m\frac{m^x}{x!}$

Where m=mean, x=number of events

Given x=1, and mean,m=28

$p(X=1)=\frac{e^{-28} *28^1}{1!}\\p(X=1)=0.0000$

For x=2 and mean,m=28

$p(X=2)=\frac{e^{-28} *28^2}{2!}\\p(X=2)=0.0000$

For Uniform Distribution

Time interval 10 and 19 minutes is 9

Time interval between 15 and 16 minutes is 1

Therefore:-

$p(x)=\frac{1}{9}\\p(x)=0.1111\\p(x)=0.11 \ (2d.p)$

6 0

3 years ago

What is the effect on the volume of a sphere if the radius is divided by 3?

Neko [114]

For this case we have by definition, that the volume of a sphere is given by:

$V = \frac {4} {3} \pi * r ^ 3$

Where:

r: It is the radius of the sphere

If the radius is divided by 3 we have:

$\frac {r} {3}:$

$V = \frac {4} {3} \pi * (\frac {r} {3}) ^ 3\\V = \frac {4} {3} \pi * \frac {r ^ 3} {27}\\V = \frac {4} {81} \pi * r ^ 3$

ANswer:

the volume decreases considerably because the denominator increases

6 0

2 years ago

10 m greater than less than or equal to 1000 mL

rusak2 [61]

10 meters equals 1,000 mL. $\\ Just \ do \ 10*10 \ and \ that \ would \ equal \ 1,000 mL \\ 
 \\ Answer:\boxed{equal \ to} \\$

4 0

2 years ago

The Hiking Club plans to go camping in a State park where the

ozzi

Answer: Probability is 0.00205 = 0.205%

Step-by-step explanation: P(rain) = 0.71, P(no rain) = 0.29.

P(no rain in 5 days)= 0.29·0.29·0.29·0.29·0.29= 0.00205

5 0

2 years ago

PLEASE ANSWER!!!!!!!!!!​

PLEASE ANSWER!!!!!!!!!!