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2 years ago

Given constants a and b such that x2 + ax + b has factors (x + 7) and (x + 2) what is a?

Mathematics

1 answer:

dezoksy [38]2 years ago

8 0

Answer:

a=9 , b=14

Step-by-step explanation:

Just do the operation (x+7)(x+2)

x(x)+x(2)+7(x)+7(2)

x^2+2x+7x+14

x^2+9x+14

So a=9 and b=14

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Find an equation of the line that goes through the points (10,34) and (-1,10)

kotykmax [81]

Answer:

Given points are ( 10 ,34 ) and ( -1 , 10)

Step-by-step explanation:

The equation of line is given by 

first we can find slope (m) 

= (y2 - y1) / ( x2 - x1)

= 34-10/10+1

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Now the equation is

y - y1 = m ( x - x1) 

y - 10 = 24/11 ( x +11)

11 ( y - 10 ) = 24 (x + 11)

11y - 110 = 24x + 264

24x + 264 +110-11y =0

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which is the required equation 

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3 years ago

Determine whether the relation describe c as a function of w.

Delicious77 [7]

Answer:

Function:

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Step-by-step explanation:

Yes, the relation described can be interpreted as a function.

Here, c is the cost of a mail letter. c depends upon w, which is the weights of the mail letter.

As described in the question, the relation can be expressed as a function.

c can be expressed as a function of w in the following manner:

c(cost of mail) = f(w), where w is the independent variable and c is the dependent variable

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Step-by-step explanation:

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2 years ago

Given constants a and b such that x2 + ax + b has factors (x + 7) and (x + 2) what is a?​

Given constants a and b such that x2 + ax + b has factors (x + 7) and (x + 2) what is a?