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4 years ago

Find the volume of this prism

1 answer:

8 0

VOLUME=BASE*HEIGHT  is the formula for volume of prism....

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Can somebody help me??

rosijanka [135]

Answer:

b and c are your answers

Step-by-step explanation:

Hopefully this helps :)

6 0

3 years ago

Is y=28(0.438)^8 growth or decay

alexandr1967 [171]

It is decay, growth would mean that the number in brackets is greater than 1.

8 0

2 years ago

Read 2 more answers

Find the median of the data in the dot plot below.

Marta_Voda [28]

Answer:

Step-by-step explanation:

The median is the middle value of the data arranged in ascending order. If there is no exact value in the middle then it is the average of the values either side of the middle.

The data is arranged in ascending order within the dot plot

There are 10 values in the data set

Thus the median is between the fifth and sixth values.

Counting from the left (35)

The fifth value = 39 and the sixth value = 41, thus

median = $\frac{39+41}{2}$ = $\frac{80}{2}$ = 40

6 0

3 years ago

Read 2 more answers

Sophia drives 6.12 miles each time she goes to visit her grandparents. How far will Sophia drive if she visits her grandparents

adell [148]

Answer:

55.08

Step-by-step explanation: Hope it helped.

3 0

4 years ago

Read 2 more answers

Random variables X Poisson~ ( a) ,Y Poisson ~ ( a) . X and Y are independent. If 2 1, 2 1. U =2X+ Y-1, V=2X- Y +1. Find: ) Cov (

german

By definition of covariance,

$\mathrm{Cov}(U,V)=E[(U-E[U])(V-E[V])]=E[UV-E[U]V-UE[V]+E[U]E[V]]=E[UV]-E[U]E[V]$

Since $U=2X+Y-1$ and $V=2X-Y+1$ , we have

$E[U]=2E[X]+E[Y]-1$

$E[V]=2E[X]-E[Y]+1$

$\implies E[U]E[V]=(2E[X]+E[Y]-1)(2E[X]-(E[Y]-1))=4E[X]^2-(E[Y]-1)^2=4E[X]^2-E[Y]^2+2E[Y]-1$

and

$UV=(2X+Y-1)(2X-(Y-1))=4X^2-(Y-1)^2=4X^2-Y^2+2Y-1$

$\implies E[UV]=4E[X^2]-E[Y^2]+2E[Y]-1$

Putting everything together, we have

$\mathrm{Cov}(U,V)=(4E[X^2]-E[Y^2]+2E[Y]-1)-(4E[X]^2-E[Y]^2+2E[Y]-1)$

$\mathrm{Cov}(U,V)=4(E[X^2]-E[X]^2)-(E[Y^2]-E[Y]^2)$

$\mathrm{Cov}(U,V)=4V[X]-V[Y]=4a-a=\boxed{3a}$

7 0

4 years ago