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Dafna11 [192]
1 year ago
10

I would love for someone to help me out :)

Mathematics
1 answer:
Kryger [21]1 year ago
3 0

We can solve this problem in different ways:

0. Statement: As angle 1 and 3 are vertical angles, and angle 1, 5, 4 form a straigth angle, so angle 2 and (algle 4 + angle 5) are vertcal angles too.

Reason:

\begin{gathered} \angle1+\angle4+\angle5=180=\angle2+\angle3(share\text{ the same line)} \\ \angle1=\angle3(verticl\text{ angles)} \\ So, \\ \angle4+\angle5=\angle2 \end{gathered}

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An urn contains 12 balls, of which 4 are white.
wel

Answer:

a) \frac{1}{3}

b) \frac{4}{12}\,,\,\frac{4}{11}\,,\,\frac{4}{10}\,,...

Step-by-step explanation:

Number of balls in the urn = 12

Number of white balls in the urn = 4

So, number of balls which are not white = 12 - 4 = 8

We know that probability = No. of outcomes/Total number of outcomes

Let A_i\,,\,B_i\,,\,C_i denotes the event of getting white ball by A, B and C

a) each ball is replaced after being drawn.

Probability = Number of white balls/Total number of balls

Solution: P(A_i)=P(B_i)=P(C_i)=\frac{4}{12}=\frac{1}{3}

b)the balls that are withdrawn are not replaced.

Solution:

If A wins: P(A_1)=\frac{4}{12}=\frac{1}{3}

If A lost and B wins: P\left ( B_1|A_1^{c} \right )=\frac{4}{11}

If A and B lost and C wins: P\left ( C_1|A_1^{c}\,B_1^{c} \right )=\frac{4}{10}

and so on....

4 0
4 years ago
A door mat is 21 inches wide and 27 inches long .what is its perimeter
Vedmedyk [2.9K]

Answer:

96 in

Step-by-step explanation:

5 0
2 years ago
An amusement park rounds its total attendance for last year to 120,000 people.
Sedbober [7]

Answer:

B

Step-by-step explanation:

B Rounded to nearest ten thousand

7 0
2 years ago
Read 2 more answers
Please help!! I keep getting a different answer!!! 14 points!!
erik [133]
Answer : No solutions

(I tried making it as detailed as possible, I apologize if you don’t understand it)

5 0
3 years ago
Ratio of girls to boys at a movie is 5:7 if there are 28 boys how many girls are at the movie?
NeTakaya

For every 7 boys there are 5 girls.

Divide the number of boys by the ratio for boys: 28 / 7 = 4

Now multiply that by the ratio for girls:

4 x 5 = 20

There are 20 girls.

5 0
3 years ago
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