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zhannawk [14.2K]
3 years ago
7

Bill is driving with his family for his summer vacation. His total trip is 425 miles. His family has 205 miles to go after stopp

ing for dinner. Which equation should be used to find the distance Bill’s family drove before dinner?
A. 425 = x +205
B. 425 = x - 205
C. 425 = x/205
D. 425 = 205x
Mathematics
2 answers:
Evgesh-ka [11]3 years ago
7 0

Answer:

the answer is b

Step-by-step explanation:

Llana [10]3 years ago
6 0

Answer:

A.

Step-by-step explanation:

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The general form of the equation of a circle is x2 + y2 + 42x + 38y − 47 = 0. The equation of this circle in standard form is .
Readme [11.4K]

Answer:

(-21,-19)

\sqrt{849}

Standard form

Step-by-step explanation:

We are given the equation of circle

x^2+y^2+42x+38y-47=0

General equation of circle:

x^2+y^2+2gx+2fy+c=0

Centre: (-g,-f)

Radius: \sqrt{g^2+f^2-c}

Compare the equation to find f, g and c from the equation

g\rightarrow 21

f\rightarrow 19

c\rightarrow -47

Centre: (-21,-19)

Radius (r) =\sqrt{21^2+19^2+47}=\sqrt{849}

Standard form of circle:

(x+21)^2+(y+19)^2=849

The centre of circle at the point (-21,-19) and its radius is \sqrt{849}.

The general form of the equation of a circle that has the same radius as the above circle is standard form.

4 0
3 years ago
Read 2 more answers
Write an equation of a line given the point (2,6) and a slope of 4,
hammer [34]

Answer:

y=4x-2

Step-by-step explanation:

y=mx+b

plug in known variables

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simplify

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plug in m and b

y=4x-2

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garik1379 [7]
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