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ElenaW [278]
4 years ago
11

The equation of circle having a diameter with endpoints -3,1 and 5,7 is

Mathematics
1 answer:
bogdanovich [222]4 years ago
5 0
Ok, diameter
find the distance and the midpoint

remember, the equation of the circle with center (h,k) and radius r is
(x-h)²+(y-k)²=r²

so find radius and midpoint

find diameter
find distance between the points
D=\sqrt{(x2-x1)^2+(y2-y1)^2}
D=\sqrt{(5-(-3))^2+(7-1)^2}
D=\sqrt{(5+3)^2+(6)^2}
D=\sqrt{(8)^2+36}
D=\sqrt{64+36}
D=\sqrt{100}
D=10

radius is 5 then

midpoint is the average of the points

(-3+5)/2 is the x value which is 1
(1+7)/2 is theh y vale which is 4

center is (1,4)
radius is 5

(x-1)²+(y-4)²=5² is da equation
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andreyandreev [35.5K]
When you see a "%" you need to ask " a percent of what"?

Here, it's a percent of the original prize, so the discount is 20% of the original prize, that is 20% of 35.

20% is also 20/100 or 1/5, so we can calculate this like this:

\frac{1}{5} *35=7

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6 0
3 years ago
Bob needs to buy dirt to fill a garden bed that is a 8 ft. by 12 ft.
kondor19780726 [428]

Answer:

576 cubic feet of dirt

Step-by-step explanation:

l x w x h

8 x 12 x 6 = 576

4 0
3 years ago
Triangle X Y Z is shown. The length of side X Y is (9 n + 12) feet and the length of side X Z is (15 n minus 6) feet. Angles X Y
posledela

*the figure is shown in the attachment

Answer/Step-by-step explanation:

Since <XYZ and <YZX are said to be congruent, therefore, the side opposite to each of the angle are also equal. Therefore, ∆XYZ is an isosceles ∆.

Find the value of n by creating an equation to solve for n:

XY = (9n + 12) ft

XZ = (15n - 6) ft

XY = XZ (2 equal lengths of isosceles ∆)

9n + 12 = 15n - 6 (substitution)

Combine like terms

9n - 15n = - 12 - 6

-6n = -18

Divide both sides by -6

-6n/-6 = -18/-6

n = 3

Find the length of leg XY by substituting n = 3 into XY = (9n + 12) ft.

XY = (9(3) + 12) ft

XY = (27 + 12) ft

XY = 39 ft

Find the length of leg XZ by substituting n = 3 into XZ = (15n - 6) ft.

XZ = (15(3) - 6) ft

XZ = (45 - 6) ft

XZ = 39 ft

7 0
3 years ago
A volleyball camp chargers $150 per camper for 10 campers. When a team brings 15 campers, the rate is reduced to $125 per camper
nexus9112 [7]
Answer


25$



Because $150 - $125
8 0
3 years ago
Please help me out with this
Genrish500 [490]

Answer:

x = 17

Step-by-step explanation:

For the parallelogram to be a rhombus then then the diagonal must bisect the given angle, thus

3x - 11 = x + 23 ( subtract x from both sides )

2x - 11 = 23 ( add 1 to both sides )

2x = 34 ( divide both sides by 2 )

x = 17

7 0
3 years ago
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