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4 years ago

GETS BRAINLIEST AND 11 PTS!

2 answers:

6 0

Add the total of both groups and divide by the total number in each group

Group X = 535 / 18 = 29.72 mean

group Y = 500 / 18 = 27.78 mean

Group X has the higher mean

Whitepunk [10]4 years ago

5 0

The answer is
A. Group X has a higher mean than Group Y.

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Which scatter plot has the weakest association

svetoff [14.1K]

Answer:

Where is the picture

Step-by-step explanation:

4 0

3 years ago

Which of the following is the height of the special trapezoid if WX = 18 , YZ = 18 & The Area Is 144^2

Ierofanga [76]

Area of a trapezoid formula:

A = 1/2(Base1 + Base2)*height

I will assume that WX and YZ are the two bases, since that's the only thing that logically makes sense to answer the question.

Plug in what we know
I believe the Area is meant to be 144 unit^2, as no area is ever given as 144^2

144 = 1/2(18 + 18) * h

solve for h

144 = 18 * h

h = 144/18

h = 8

The height is 8.

8 0

3 years ago

What is the completely factored form of f(x)=x3+5x2+4x−6?

Gre4nikov [31]

$f(x)=x^3+5x^2+4x-6$
$f(-3)=(-3)^3+5(-3)^2+4(-3)-6=0\implies x+3\text{ is a factor of }f(x)$

Synthetic division yields

-3 | 1   5   4   -6
.    |      -3 -6    6
- - - - - - - - - - - - -
.    | 1   2 -2    0

which translates to

$\dfrac{x^3+5x^2+4x-6}{x+3}=x^2+2x-2$

with remainder 0. Now by the quadratic formula,

$x^2+2x-2=0\implies x=\dfrac{-2\pm\sqrt{2^2-4(1)(-2)}}2=-1\pm\sqrt3$

and so

$f(x)=x^3+5x^2+4x-6=(x+3)(x-(-1+\sqrt3))(x-(-1-\sqrt3))$

3 0

3 years ago

A golfer takes a swing from a hill twenty feet above the cup with an initial upwards velocity of 76 feet per second. How long do

jeka94

Answer:

t = 5 seconds

Step-by-step explanation:

A golfer takes a swing from a hill twenty feet above the cup with an initial upwards velocity of 76 feet per second.

We need to find how long does it take the ball to land on the ground near the cup.

The equation for the path of the ball is given using second equation of kinematics as follows :

$-16t^2+76 t+20=0\\\\\text{or}\\\\-4t^2+19t+5=0\\\\-4t^2+20t-t+5=\\\\-4t(t-5)-1(t-5)=0\\\\(t-5)(-4t-1)=0\\\\t=5, t=\dfrac{-1}{4}\ s$

Neglecting negative value,

It will take 5 seconds for the ball to land on the ground near the cup.

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3 years ago

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Ahat [919]

Answer:

Step-by-step explanation:

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3 years ago

Read 2 more answers