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k0ka [10]
3 years ago
9

Cho hình thang vuông ABCD, có góc A=góc D=90 độ. AD=77cm, AB=91cm, DC=127cm. Tính góc C và cạnh BC

Mathematics
1 answer:
Y_Kistochka [10]3 years ago
4 0

Answer:

put in eng then I can help u

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Triangle ABC is rotated 100° counterclockwise about point P to create ΔA′B′C′. What is m∠C′A′B′
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Answer:

Angle CAB

Step-by-step explanation:

Given that a triangle ABC is rotated 100 degrees counterclockwise about a point P. New triangle formed is Triangle A'B'C'.

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Here fixed point is P and angle is 100 degrees

The property of rotation is rotation is a transformation of transforming a geometric figure to a similar figure.

In other words, by rotation here ABC will be similar to A'B'C'

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3 years ago
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Answer:

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Jason bought 10 of the 30 raffle tickets for a drawing. What is the probability that Jason will win all 3 of the prizes if once
anastassius [24]

For the first drawing, there are  30  tickets altogether, and Jason
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                                                               10 / 30 .

For the second drawing, there are  29  tickets altogether, and Jason
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For the third drawing, there are  28  tickets altogether, and Jason
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                                                                 8 / 28 .

The probability that all three of these things will happen is

                      (10/30) x (9/29) x (8/28)  =  720 / 24,360

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7 0
3 years ago
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Math look at the picture to see the question please answer asap!
4vir4ik [10]

Answer:

7

Step-by-step explanation:

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3 0
3 years ago
pheobe andy and polly share £270 pheobe gets three times as much as andy who hets twice as much as polly how much do they each g
KIM [24]
Money of Phoebe - 3 times as much as Andy
Money of Andy - 2 times as much as Polly
Total money of Phoebe, - £270
Andy and Polly

*Solution

Let
B - Phoebe's money
A - Andy's money
L - Polly's money

1. The money of the Phoebe, Andy, and Polly, when added together would total £270. Thus,

B + A + L = £270 (EQUATION 1)

2. Phoebe has three times as much money as Andy and this is expressed as

B = 3A

3. Andy has twice as much money as Polly and this is expressed as

A = 2L (EQUATION 2)

4. This means that Phoebe has ____ as much money as Polly,

B = 3A
B = 3 x (2L)
B = 6L (EQUATION 3)

This step allows us to eliminate the variables B and A in EQUATION 1 by expressing the equation in terms of Polly's money only.

5. Substituting B with 6L, and A with 2L, EQUATION 1 becomes,

6L + 2L + L = £270
9L = £270
L = £30

So, Polly has £30.

6. Substituting L into EQUATIONS 2 and 3 would give us the values for Andy's money and Phoebe's money, respectively.

A = 2L
A = 2(£30)
A = £60

Andy has £60

B = 6L
B = 6(£30)
B = £180

Phoebe has £180
5 0
3 years ago
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