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maksim [4K]
3 years ago
8

Help me Solvex^2+5x+6=0

Mathematics
1 answer:
trapecia [35]3 years ago
8 0
The answer is -1.6 because 5 x -1.6 is -8 and -8 + 8 is 0
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Which of these prices is lower than 5 for $9.00? (A). 3 for $6.00. (B). 8 for $16.00. (C). 6 for $10.00. (D). 10 for $19.00
almond37 [142]
A is the answer of the question
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3 years ago
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Heights​ (cm) and weights​ (kg) are measured for 100 randomly selected adult​ males, and range from heights of 133 to 193 cm and
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

  =-105+(1.13\times 172)\\=-105+194.36\\=89.36

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

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3 years ago
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ch4aika [34]

Answer:

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Step-by-step explanation:

Domain is simply another way of saying input values. Input values are literally just x values (Any place on the x bar. Range is the same but instead of x values it is for y values.

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2 years ago
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Marcy wants to paint the sides of the wooden storage chest shown below gray except the white lid. What is the surface area?
arlik [135]

Answer:

Surface area = 2,160 in²

Step-by-step explanation:

Given:

Length of box = 15 in

Width of box = 30 in

Height of box = 24 in

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Surface area

Computation:

Surface area = 2h[l+b]

Surface area = 2(24)[30 + 15]

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3(3w-4) = -20 Solve
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