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4 years ago

Please help 40 points!

Mathematics

1 answer:

borishaifa [10]4 years ago

7 0

Answer:

1) b = y-intercept = 1

2) m = slope = -3/2

3) y = -3/2 x + 1

Step-by-step explanation:

(-2, 4) and (2, -2)

slope m = (4 + 2)/(-2 - 2)

slope m = - 6/4 = -3/2, b = 1

#3)

y = mx + b

y = -3/2 x + 1

#2)

m = slope = -3/2

#1)

b = y-intercept = 1

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Mumz [18]

Answer:

125 inches cubed

Step-by-step explanation:

First, you find the volume of the full square, and then you divide your answer by 2, since the figure is a triangle.

So,

10 x 10 x 2.5 = 250

250 ÷ 2 = 125 inches cubed

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3 years ago

EXTRA POINTS

natita [175]

The correct answer is C) y = -2x - 4

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y - y1 = m(x - x1)

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4 years ago

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Kruka [31]

Answer:

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Step-by-step explanation:

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3 years ago

In a data distribution, the first quartile, the median and the means are 30.8, 48.5 and 42.0 respectively. If the coefficient sk

RUDIKE [14]

Answer:

a) The third quartile Q₃ = 56.45

b) Variance $\mathbf{ \sigma^2 =2633.31}$

Step-by-step explanation:

Given that :

$Q_1$ = 30.8

Median $Q_2$ = 48.5

Mean = 42

a) The mean is less than median; thus the expression showing the coefficient of skewness is given by the formula :

$SK = \dfrac{Q_3+Q_1-2Q_2}{Q_3-Q_1}$

$-0.38 = \dfrac{Q_3+30.8-2(48.5)}{Q_3-30.8}$

$-0.38Q_3 + 11.704 = Q_3 +30.8 - 97$

$1.38Q_3 = 77.904$

Divide both sides by 1.38

$Q_3 = 56.45$

b) The objective here is to determine the approximate value of the variance;

Using the relation

$SK_p = \dfrac{Mean- (3*Median-2 *Mean) }{\sigma}$

$-0.38= \dfrac{42- (3 *48.5-2*42) }{\sigma}$

$-0.38= \dfrac{(-19.5) }{\sigma}$

$-0.38* \sigma = {(-19.5) }{}$

$\sigma =\dfrac {(-19.5) }{-0.38 }$

$\sigma =51.32$

Variance = $\sigma^2 =51.32^2$

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3 years ago

URGENT !!!!!!! Please answer correctly !!!!!!!!!!!! Will be marking Brianliest !!

brilliants [131]

Answer:

A=79.2 $in^{2}$

Step-by-step explanation:

A=a+b/2*h

A=5.4+14.4/2*8

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6 0

3 years ago