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labwork [276]
2 years ago
15

Ashley spent half her weekly allowance playing mini-golf. To earn more money her parents let her wash the car for $9. What is he

r weekly allowance if she ended with $15?
Show your work
please hurry up!!!
Mathematics
1 answer:
cupoosta [38]2 years ago
7 0
Her weekly allowance is 12$

15 total - 9 for car = 6 for half of allowance
6 + 6 = 12
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Round 2826 to the nearest hundred.
sergij07 [2.7K]

Answer:

2800

Step-by-step explanation:

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The endpoints of a diameter of a circle are (6,2) and (−2,5) . What is the standard form of the equation of this circle?
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Answer:

The standard form of the given circle is

(x-2)^2+(y-\frac{7}{2})^2=73

Step-by-step explanation:

Given that the end points of a diameter of a circle are (6,2) and (-2,5);

Now to find the standard form of the equation of this circle:

The center is (h,k) of the circle is the midpoint of the given diameter

midpoint formula is M=(\frac{x_{1}+x_{2}}{2},\frac{y_{1}+y_{2}}{2})

Let (x_{1},y_{1}) and (x_{2},y_{2}) be the given points (6,2) and (-2,5) respectively.

M=(\frac{6-2}{2},\frac{2+5}{2})

M=(\frac{4}{2},\frac{7}{2})

M=(2,\frac{7}{2})

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now to find the radius:

The diameter is the distance between the given points (6,2) and (-2,5)

d=\sqrt{(x_{2}-x_{1})^2+(y_{2}-y_{1})^2}

=\sqrt{(-2-6)^2+(5-2)^2}

=\sqrt{(-8)^2+(3)^2}

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=\sqrt{73}

Therefore the radius is \sqrt{73}

i.e., r=\sqrt{73}

Therefore the standard form of the circle is

(x-h)^2+(y-k)^2=r^2

Now substituting the center  and radiuswe get

(x-2)^2+(y-\frac{7}{2})^2=(\sqrt{73})^2

(x-2)^2+(y-\frac{7}{2})^2=73

Therefore the standard form of the given circle is

(x-2)^2+(y-\frac{7}{2})^2=73

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ANSWER


22


EXPLANATION


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18=r/2
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