3 years ago

I don't know how to do this type of problem and need help !!

Mathematics

2 answers:

Alexxandr [17]3 years ago

8 0

The answer is B 3x2 − 11x + 8 will be a polynomial

maria [59]3 years ago

7 0

It's between the first and second but I think it's the second one .

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HELP ME Using the following equation, complete the square and find the center and radius of the circle:

IrinaK [193]

Answer: $(-2,3)$ , $r=5\ \text{units}$

Step-by-step explanation:

Given

the equation is $x^2+y^2+4x-6y-12=0$

completing the square

$\Rightarrow (x^2+2\times 2\times x+4-4)+(y^2-2\times3\times y+9-9)-12=0\\\Rightarrow (x^2+2\times 2\times x+4)+(y^2-2\times3\times y+9)-12-4-9=0\\\Rightarrow (x+2)^2+(y-3)^2=25\\\Rightarrow (x+2)^2+(y-3)^2=5^2\\\Rightarrow (x-(-2))^2+(y-3)^2=5^2$

Thus, the center of the circle is $(-2,3)$ and radius is $r=5\ \text{units}$

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3 years ago

Solve for w. 4 = 0.25(w-4.3)

Snezhnost [94]

W=20.3

solve what's in the parenthesis, move the terms, calculate, then divide both sides.

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3 years ago

Which of the following methods can be used to determine if a relation is a function?? Select all that apply.

CaHeK987 [17]

Answer:

B) Write out the relation in an x-y table and check that each x-value corresponds to the only one x - value

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3 years ago

What is the surface area? 8 mm 10 mm 5 mm Explain how you arrived at your answer.

lesya692 [45]

Answer:

400 mm

Step-by-step explanation:

8 * 10 = 80

80 * 5 = 400

400 mm

7 0

2 years ago

Read 2 more answers

If f (x) = 4x - 11 , What is the value of f(5) a. 20x - 55 b. 34 c. 9 d. 4

kramer

Answer:C

Step-by-step explanation:

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3 years ago