A researcher is interested in studying weight of adolescent females ages 10-13 to determine if weights in 2008 have significantly increased since 1988. She measures the weight of a randomly selected sample of women. Assume the weights are normally distributed.

100 103 93 90 91 101 85 89 79 87

b

step-by-step explanation:

the word superfluous means unnecessary

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answer:

(7 x + 6 y) (49 x^2 - 42 x y + 36 y^2)

discussion:

the trick is to recognize that 343 = 7^3 and 216 = 6^3 and, in general,

a^3 + b^3 =   (a + b) (a^2 - a b + b^2).

in our case

343x^3+216y^3   =   (7x)^3 + (6y)^3

so take a = 7x and b = 6y in the above equation to get the answer.

you,

mrb

c.

step-by-step explanation:

substitution for (0,1)

y=x^2+4x+1

1=0^2+4(x)0+1

1=0+4(x)0+1

1=4(x)0+1

1=0+1

1=1

substitution for (-3,-2)

y=x+1

-2=-3+1

-2=-2

n=1.75+1.75

step-by-step explanation:

3.5/2=1.75