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Colt1911 [192]
3 years ago
14

The equation y = 55x 85 describes the amount of money a plumber charges, where y is the total amount he charges and x is the num

ber of hours he works.
The table shows the total amount of money an electrician charges.
How much does each charge per hour?
Number of hours worked 1 2 4 7
Total amount charged 115 180 310 505
The plumber charges $ __per hour.
The electrician charges $ ___per hour.
Mathematics
1 answer:
andrew11 [14]3 years ago
4 0
Can you confirm the equation?  It looks like
y=55x 85
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Which best describes the strength of the model? a weak positive correlation a strong positive correlation a weak negative correl
Akimi4 [234]

Correlation coefficient helps us to know how strong is the relation between two variables. The strength of the model is a strong positive correlation.

<h3>What is the correlation coefficient?</h3>

The correlation coefficient helps us to know how strong is the relation between two variables. Its value is always between +1 to -1, where, the numerical value shows how strong is the relation between them and, the '+' or '-' sign shows whether the relationship is positive or negative.

  • 1 indicates a strong positive relationship.
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  • A result of zero indicates no relationship at all, therefore, independent variable.

Hence, the strength of the model is a strong positive correlation.

Learn more about Correlation Coefficients:

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3 years ago
Quadrilateral ABCD ​ is inscribed in this circle.
Lana71 [14]
(6x+19)° + x° = 180°
7x° = 180°-19°
7x° = 161°
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m∠B = 6(23) + 19
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3 0
3 years ago
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Oliga [24]

Answer:

x = - 39/148

y = -6/37

Step-by-step explanation:

substitute the given value of y into the equation to get 8x-13 (12x+3)=0

solve for x to get x= - 39/148

substitute the given value of x into 12x+3=y

12 x (-39/148) + 3 = y

-6/37 = y

7 0
3 years ago
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EleoNora [17]

Answer:

9

Step-by-step explanation:

18 times 1

then divided by 2

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3 years ago
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