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marysya [2.9K]
3 years ago
6

Explain why the greater than or equal to and less than or equal to symbols have a closed circle, while the greater than and less

than symbols have an open circle.
Mathematics
1 answer:
mezya [45]3 years ago
7 0

the circle is closed because it can also include that number or be equal to it, when the circle is open that number isn't an option and is just a starting point.


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How do you simplify the radical √144 ?
SVETLANKA909090 [29]

Answer:

its 12

Step-by-step explanation:

you find whats closest for example, 10 squared is 100.

100 is close to 144

and 11x11= 121

so you would do 12

12x12 is 144

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A stock lost 8 1/4 points on Monday and then another 2 3/4 points on Tuesday. On Wednesday, it gained 12 points. What was the ne
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There was a net gain of 1.

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The hypotenuese of an isosceles right triangle is 13 inches. The midpoints of its sides are connected to form an inscribed trian
Georgia [21]

Answer:

The Sum of the areas of theses triangles is 169/3.

Step-by-step explanation:

Consider the provided information.

The hypotenuse of an isosceles right triangle is 13 inches.

Therefore,

x^2+x^2=169\\2x^2=169\\x=\frac{13}{\sqrt{2} }

Then the area of isosceles right triangle will be: A=\frac{1}{2} x^2

Therefore the area is: A=\frac{169}{4}

It is given that sum of the area of these triangles if this process is continued infinitely.

We can find the sum of the area using infinite geometric series formula.

S=\frac{a}{1-r}

Substitute a=\frac{169}{4} \ and\ r=\frac{1}{4} in above formula.

S=\frac{\frac{169}{4}}{1-\frac{1}{4}}

S=\frac{\frac{169}{4}}{\frac{3}{4}}

S=\frac{169}{3}

Hence, the Sum of the areas of theses triangles is 169/3.

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3 years ago
The circle given by (x-1)^2 + (y-1)^2 =1
Olenka [21]

Answer:

Step-by-step explanation:

its center is (1,1) and radius=1

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12 x 40 = hours she worked = 480

3 x 31 = appointment fee = 93
480 + 93 = 573
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3 years ago
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