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azamat
4 years ago
13

CAN SOMEONE JUST PLEASE ANSWER THIS ASAP FOR BRAINLIEST!!’

Mathematics
1 answer:
sesenic [268]4 years ago
5 0
ANSWER

The three expressions are

V = 2(9 - {b}^{3} )(9 + {b}^{3} )

EXPLANATION

We were given the volume in cubic units to

V = 162 - 2 {b}^{6}

If we factor 2, we get,

V = 2(81 - {b}^{6} )

The expression in parenthesis is a difference of two squares. But you may not recognize it at first sight.

V = 2( {9}^{2} - ({b}^{3})^{2} )

This further gives us.

V = (2)(9 - {b}^{3} )(9 + {b}^{3} )
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Hey everyone!!!!!!!!!!!
Ronch [10]

Answer:

P(0, 1)

Step-by-step explanation:

Using the section formula

x_{P} = \frac{(3(-2))+(2(3))}{2+3} = \frac{-6+6}{5} = 0

y_{P} = \frac{(3(5))+(2(-5))}{2+3} = \frac{15-10}{5} = 1

Hence P(0, 1)

8 0
3 years ago
15. Set up a proportion and use it to solve for x. Show your work.<br> 2<br> 10<br> X<br> 3
ser-zykov [4K]

Answer:

x = 15

Step-by-step explanation:

Create a proportional relationship to solve for x

3/2 = x/10

Cross multiply

2x = 30

Divide both sides by 2

x = 15

7 0
3 years ago
Read 2 more answers
May I know why is the answer 1/2? Any idea <br><br> Thank you!
ElenaW [278]

let's put value of t in equation.

x = 2√t

x = 2√y

x/2 = √y

(x/2)^2 = y

y = x^2 /4

now let's differentiate it with respect to x.

dy/dx = 2x/4 = x/2

differentiating again wrt to x

d^2y/dx^2 = 1/2

8 0
3 years ago
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Bas_tet [7]
The answer is D=2C+TC
5 0
4 years ago
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An attendant at a car wash is paid according to the number of cars that pass through. Suppose that following payments are made w
QveST [7]

Answer:

E(X) = 7*0.18 +9*0.08 +11*0.09 +15*0.08 +17*0.41 =13.22

And we can find the second moment with this formula:

E(X^2) = \sum_{i=1}^n X^2_i P(X_i)

And replacing we got:

E(X^2) = 7^2*0.18 +9^2*0.08 +11^2*0.09 +15^2*0.08 +17^2*0.41 =189.72

And we can find the variance like this:

Var(X) = E(X^2) -[E(X)]^2= 189.72- (13.22)^2 =14.9516

And the deviation would be:

Sd(X)= \sqrt{14.9516}= 3.867

Step-by-step explanation:

For this case we have the following dataset given:

Payment     $7     $9     $11    $13    $15  $17

Probability 0.18  0.08  0.09  0.16  0.08   0.41

For this case we can calculate the mean with this formula:

E(X) = \sum_{i=1}^n X_i P(X_i)

And replacing we got:

E(X) = 7*0.18 +9*0.08 +11*0.09 +15*0.08 +17*0.41 =13.22

And we can find the second moment with this formula:

E(X^2) = \sum_{i=1}^n X^2_i P(X_i)

And replacing we got:

E(X^2) = 7^2*0.18 +9^2*0.08 +11^2*0.09 +15^2*0.08 +17^2*0.41 =189.72

And we can find the variance like this:

Var(X) = E(X^2) -[E(X)]^2= 189.72- (13.22)^2 =14.9516

And the deviation would be:

Sd(X)= \sqrt{14.9516}= 3.867

3 0
3 years ago
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