Y=x/3+2. Its a benchmark pls help

Liam, Sarah and Emily shared some money in the ratio 3:6:8

tino4ka555 [31]

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3 0

2 years ago

Hello whats 2+2 :p thanks

Ugo [173]

Answer:

4

Step-by-step explanation:

lol ez points

8 0

2 years ago

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Suppose the heights of 18-year-old men are approximately normally distributed, with mean 65 inches and standard deviation 4 inch

Serhud [2]

Answer:

Step-by-step explanation:

a)

Given that ; X ~ N ( µ = 65 , σ = 4 )

P ( 64 < X < 66 )

From application of normal distribution ;

Z = ( X - µ ) / σ, Z = ( 64 - 65 ) / 4, Z = -0.25

Z = ( 66 - 65 ) / 4, Z = 0.25

Hence, P ( -0.25 < Z < 0.25 ) = P ( 64 < X < 66 ) = P ( Z < 0.25 ) - P ( Z < -0.25 ) P ( 64 < X < 66 ) = 0.5987 - 0.4013

P ( 64 < X < 66 ) = 0.1974

b) X ~ N ( µ = 65 , σ = 4 )

P ( 64 < X < 66 )

From normal distribution application ;

Z = ( X - µ ) / ( σ / √(n)), plugging in the values,

Z = ( 64 - 65 ) / ( 4 / √(12)) = Z = -0.866

Z = ( 66 - 65 ) / ( 4 / √(12)) = Z = 0.866

P ( -0.87 < Z < 0.87 )

P ( 64 < X < 66 ) = P ( Z < 0.87 ) - P ( Z < -0.87 )

P ( 64 < X < 66 ) = 0.8068 - 0.1932

P ( 64 < X < 66 ) = 0.6135

c) From the values gotten for (a) and (b), it is indicative that the probability in part (b) is much higher because the standard deviation is smaller for the x distribution.

4 0

3 years ago

I need help on this question

____ [38]

The inscribed angle is half the measure of the intercepted arc, so to find the intercepted arc you would multiply the inscribed angle by 2.

The last choice is correct.

6 0

3 years ago

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1. when the expression x^3+ 2kx+2 is divided by x+2, the remainder is less than the remainder when the expression is divided by

nalin [4]

Answer:

let the polynomial be

f(x)=x³+2kx+2

is divided by

g(x)=x+2

hence

(x+2) is a factor of f(x)

so comparing with x-a we get a=-2

so

f(a)=0

f(-2)=(-2)³+2*-2*k+2

0=-8-4K+2

4k=-6

K=-6/4

k=-3/2

again

when divided by x+1

g(x)=x+1

hence

x+1 is a factor

so a=-1

f(-1)=-(1)³+2*-1*k+2

0=-1-2k+2

0=1-2k

k=1/2

The value of k is 1/2 when divided by x+1

and

K =-3/2 when divided by x+2

4 0

2 years ago