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makvit [3.9K]
2 years ago
14

Circle D circumscribes ABC and ABE. Which statements about the triangles are true? Statement I: The perpendicular bisectors of A

BC intersect at the same point as those of ABE. Statement II: The distance from C to D is the same as the distance from D to E. Statement III: bisects CDE. Statement IV: The angle bisectors of ABC intersect at the same point as those of ABE. A. I only B. I and II C. II and IV D. I and III E. III and IV
Mathematics
2 answers:
Anika [276]2 years ago
8 0

Answer:

It’s B

Step-by-step explanation:

mestny [16]2 years ago
6 0

Answer:

The correct option is;

B. I and II

Step-by-step explanation:

Statement I: The perpendicular bisectors of ABC intersect at the same point as those of ABE

The above statement is correct because given that ΔABC and ΔABE are inscribed in the circle with center D, their sides are equivalent or similar to tangent lines shifted closer to the circle center such that the perpendicular bisectors of the sides of ΔABC and ΔABE are on the same path as a line joining tangents to the center pf the circle

Which the indicates that the perpendicular the bisectors of the sides of ΔABC and ΔABE will pass through the same point which is the circle center D

Statement II: The distance from C to D is the same as the distance from D to E

The above statement is correct because, D is the center of the circumscribing circle and D and E are points on the circumference such that distance C to D and D to E are both equal to the radial length

Therefore;

The distance from C to D = The distance from D to E = The length of the radius of the circle with center D

Statement III: Bisects CDE

The above statement may be requiring more information

Statement IV The angle bisectors of ABC intersect at the same point as those of ABE

The above statement is incorrect because, the point of intersection of the angle bisectors of ΔABC and ΔABE are the respective in-centers found within the perimeter of ΔABC and ΔABE respectively and are therefore different points.

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Bill, George, and Ross, in order, roll a die. The first one to roll an even number wins and the game is ended. What is the proba
hram777 [196]

Answer:0.5714\frac{1}{15}

Step-by-step explanation:

Given that Bill, George, and Ross, in order, roll a die.

The first one to roll an even number wins and the game is ended.

Since Bill starts the game he can win by throwing even number or lose by throwing odd number

P(win) = 0.5, otherwise, the die will go to George.  For Bill to win, both George and Ross should throw an odd number so that Bill again gets the chance with game non ending.

Thus we have Prob of Bill winning =P of Bill winning in I throw +P of Bill winning in his II chance of throw +....infinitely

To get back the dice once he loses probability

= p both throws odd = 0.5(0.5) = 0.25

Thus Prob for Bill winning

= 0.5+0.25(0.5)^2+0.25(0.5)^3(0.25)+...

This is an infinite geometric series with I term 0.5 and common ratio 0.125<1

Sum = \frac{a}{1-r} =\frac{0.5}{1-0.125} =0.5714

4 0
2 years ago
Alissa has $360 for guitar lessons. She pays $25 for each lesson. How many lessons has she attended, if she still has $85 left?
bagirrra123 [75]

Answer:

11 lessons

Step-by-step explanation:

360-85=275

275/25=11

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2 years ago
Which expression represents the total perimeter of her sandwich, and if x = 1.2, what is the approximate length of the crust?
soldi70 [24.7K]
The answer to this question is choice option letter C
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Kira looked through online census information to determine the average number of people living in the homes in her city. What is
Goshia [24]
First we need to identify if the data is qualitative or quantitative.

The data is average number of people living in the homes.

Qualitative data as its name indicates is an attribute or characteristic. It can not be measured e.g color. Quantitative data is such a data which can be counted or measured.

Since the average number of people can be counted and measured, the data is Quantitative.

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Therefore, the correct answer will be:
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2 years ago
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Choose the table that represents g(x) = −2⋅f(x) when f(x) = x + 4.
grigory [225]

Answer: THIRD OPTION.

Step-by-step explanation:

Since  g(x) = -2f(x), then g(x) is:

g(x)=-2( x + 4)\\\\g(x)=-2x-8

In order to find which table represents g(x) = -2f(x) when f(x) = x + 4, you can follow these steps:

1. Substitute x=1 into the function g(x)=-2x-8:

 g(1)=-2(1)-8\\\\g(1)=-10

2. Substitute x=2 into the function g(x)=-2x-8:

 g(2)=-2(2)-8\\\\g(2)=-12

3. Substitute x=3 into the function g(x)=-2x-8:

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Notice that those ouput values (for x=1,\ x=2 and x=3) matches with the table provided in the third option. That table represents g(x) = -2f(x) when f(x) = x + 4:

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2 years ago
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