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VladimirAG [237]

3 years ago

8

True or false when we carry out a chai square test of Independence the alternate hypothesis states that the two relevant classif

ications have our - 1 * c - 1 degrees of freedom

1 answer:

Anna35 [415]3 years ago

6 0

Answer: False

Step-by-step explanation:

degrees of freedom=(r-1)(c-1)

I don't know if I'm exactly right

if not sorry

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Suppose that a particle following the given path c(t) flies off on a tangent at t = t0. Compute the position of the particle at

Svetach [21]

Answer:

(30,35,0)

Step-by-step explanation:

We are given that

$C(t)=(2t^2,t^3-4t,0)$

$t_0=3,t_1=4$

The velocity of particle, $v(t)=c'(t)=(4t,3t^2-4,0)$

Substitute $t_0=3$

$C(3)=(2(3)^2,(3)^3-4(3),0))=(18,15,0)$

$v(3)=(4(3),3(3)^2-4,0)=(12,23,0)$

The tangent line at t=3 is given by

$l(t)=c(2)+(t-3)v(3)=(18,15,0)+(t-3)(12,23,0)$

Now, substitute t=4

$l(4)=(18,15,0)+(4-3)+(12,23,0)=(18,12,0)+(12,23,0)$

$l(4)=(30,35,0)$

Hence, the position of particle at $t_1=4$ =(30,35,0)

4 0

3 years ago

PLEASE HELP ASAP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Slav-nsk [51]

Answer:

C. 94.2 cm

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

<u>Geometry</u>

Circumference: C = 2πr

Step-by-step explanation:

<u>Step 1: Define</u>

r = 15 cm

<u>Step 2: Find </u><em><u>C</u></em>

Substitute [C]: C = 2π(15 cm)
Multiply: C = 30π cm
Multiply: C = 94.2 cm

3 0

3 years ago

Im a breadstick grrrr

STatiana [176]

Answer:

based

Step-by-step explanation:

6 0

3 years ago

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What is the distance and midpoint of (-2,-2) and (3,5)

yuradex [85]

Answer:

2-5

Step-by-step explanation:

4 0

2 years ago

Quadrilateral ABCD is a rectangle. BD = 6x - 14 and AC = 8x - 20. What is BD?

BigorU [14]

Answer:

4

Step-by-step explanation:

The diagonals are equal length:

$6x - 14 = 8x - 20\\-2x = -6\\x = 3$

$BD = 6x - 14\\BD = 6 * 3 - 14\\BD = 18 - 14\\BD = 4$

8 0

3 years ago