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djyliett [7]
3 years ago
10

Point O is the center of the circle in the diagram. What is m∠BCA ?

Mathematics
1 answer:
netineya [11]3 years ago
7 0
The sum of angle around a point equal 360°
so (BOA) = 360-250=110°
and the sum of angle in the shape CAOB = 360°
so BCA = 360-(110+90+90)= 70°
THE ANSWER IS C.70°
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A rock concert promoter scheduled an outdoor concert on July 4th. If it does not rain, the promoter will make $30,427. If it doe
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For the probability of rain on julty 4h of 0.5 his expected profit is  8885.5 dollars.

<h3>What is probability?</h3>

The probability is occurrence of a certain event out of the total number f events that can happen.

Given in the question the probability of rain is 0.5 therefore the probability of not raining is also 0.5.

If it does not rain he makes a profit of 30427 dollars and if it rains he suffers a loss of 12656 dollars.

We know, the expected profit is,

= 0.5(30427) - 0.5(12656).

= 15213.5 - 6328.

= 8885.5 dollars.

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8 0
1 year ago
In Mr. Smith's 7th Hour
tatiyna

binomial(16 + 7, 16) 2^(-(16 + 7)) = ((16 + 7)!)/(16! 7! 2^(16 + 7)) = 245157/8388608 ≈ 0.02922 ≈ 1/34.22

(assuming children are independent and male and female are equally likely)

| probability

less than 16 boys | 0.9534

16 or less boys | 0.9827

more than 16 boys | 0.01734

16 or more boys | 0.04657

fraction of boys | 16/(16 + 7) ≈ 0.695652

fraction of girls | 7/(16 + 7) ≈ 0.304348

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standard deviation | 2.398

variance | 5.75

11.5

3 0
3 years ago
X + y = 3
Studentka2010 [4]

Answer:

Infinitely many solutions

Step-by-step explanation:

x+y=3

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2(3-y)+2y=6

6-2y+2y=6

6+0=6

6=6

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3 0
3 years ago
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(5b)(-3a)
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The final answer is -15ab~
3 0
3 years ago
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andreev551 [17]

Answer:

2/1 or 2

Step-by-step explanation:

8/4 is 2

9/9 is 1

8 0
3 years ago
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