3 years ago

Whoever gets this right gets 25 points and Brainlyess answer!! :)

Mathematics

1 answer:

dedylja [7]3 years ago

3 0

(9*4*1.5)/(1/2)^3

54/(1/8)

54*8

432

So it will take 432 cubes to fill the prism.

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767074 rounded to the nearest hundred thousand

andriy [413]

767,074 rounded to the nearest hundred thousand is 800,000.

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3 years ago

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WILL GIVE BRAINLIEST AND MANY POINTS PLEASE HELP IM DROWNING IN WORK

MissTica

Answer:

a*sqrt(x+b) + c = d

a*√(x+b) + c = d

Step-by-step explanation:

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3 years ago

Show that the following functions are probability density functions for some value of k and determine k. Then, determine the mea

lord [1]

Answer:

a) 17.5

b) 15.6

c) 13.3

d) 21.51

Step-by-step explanation:

The given function is equal to:

f(x)=kx^2

where

$\int\limits^y_0 {kx^{2} } \, =1$

where y=23

Clearing k=0.00025

a) $Ex=\int\limits^y_0 {xf(x)} \, dx =\int\limits^y_0 {x*0.00025x^{2} } \, dx =17.5$

b) $Vx=Ex^{2} -(Ex)^{2} =\int\limits^y_0 {x^{2}f(x) } \, dx-17.5^{2} =\int\limits^y_0 {x^{2} *0.00025x^{2} } \, dx -17.5^{2} =321.82-306.25=15.6$

c) The function is equal to:

f(x)=k(1+2x)

$\int\limits^y_0 {k(1+2x)} \, =1$

where y=20

k=0.0024

$Ex=\int\limits^y_0 {xf(x)} \, dx =\int\limits^y_0 {x*0.0024(1+2x)} \, dx =13.3$

d) $Vx=Ex^{2} -(Ex)^{2} =\int\limits^y_0 {x^{2} f(x)} \, dx -13.3^{2}=\int\limits^y_0 {x^{2} *0.0024(1+2x)} \, dx-13.3^{2} =198.4-176.89=21.51$

8 0

3 years ago

6.75 + StartFraction 3 Over 8 EndFraction x = 13 and one-fourth

amid [387]

Easy the answer is B: 17 and one-third

3 0

3 years ago

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What's the difference?

posledela

Parenthasees

the first onewould evaluate to 4x²
the 2nd one would just be -2x²

5 0

3 years ago