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RUDIKE [14]
3 years ago
5

Select the correct product. (x + 8)(y + 3) xy + 8x + 3y + 24 xy + 3x + 8y + 24 11xy 24xy

Mathematics
2 answers:
ExtremeBDS [4]3 years ago
5 0

Answer:

Option B.  ( xy + 3x + 8y + 24 )

Step-by-step explanation:

In this question we have to find the product of the given expression

(x + 8) (y + 3)

By distributive property.

(x + 8) (y + 3) = x (y + 3) + 8 (y + 3)

                    = x (y) + 3x + 8y + 3 × 8

                    = ( xy + 3x + 8y + 24 )

Therefore, Option B.  ( xy + 3x + 8y + 24 ) is the correct answer.

MAXImum [283]3 years ago
4 0
(x + 8)(y + 3)

x*(y+3) + 8*(y + 3)

x*y + 3*x + 8*y + 3*8

xy + 3x + 8y + 24

So the correct product is =  xy + 3x + 8y + 24, I guess the second expression.

I hope this helps.
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Answer:

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Step-by-step explanation:

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yawa3891 [41]

Answer:

The weight of an adult male who is 172 cm tall is 89.36 kg.

Step-by-step explanation:

The regression equation representing the relationship between height and weight of a person is:

\hat y=-105+1.13x

Here

<em>y</em> = weight of a person

<em>x</em> = height of a person

The information provided is:

\bar x=167.90\ cm\\\bar y=81.47\ kg\\r (X, Y) = 0.228\\p-value=0.023\\\alpha =0.05

The hypothesis to test the significance of the correlation between height and weight is:

<em>H₀</em>: There is no relationship between the height and weight, i.e. <em>ρ</em> = 0.

<em>Hₐ</em>: There is a relationship between the height and weight, i.e. <em>ρ </em>≠ 0.

Decision rule:

If the <em>p</em>-value of the test is less than the significance level, then the null hypothesis will be rejected and vice-versa.

According to information provided:

<em>p</em>-value = 0.023 < <em>α</em> = 0.05

The null hypothesis was rejected at 5% level of significance.

Thus, concluding that there is a relationship between the height and weight.

Compute the weight of an adult male with height, <em>x</em> = 172 cm as follows:

\hat y=-105+1.13x

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Thus, the weight of an adult male who is 172 cm tall is 89.36 kg.

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