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AleksAgata [21]
3 years ago
7

Would the answer be 12.5

Mathematics
1 answer:
Schach [20]3 years ago
5 0
Yes, it would be 12.5.
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I don’t know the answer
Sunny_sXe [5.5K]

Answer:

AC ≈ 12.9 cm

Step-by-step explanation:

Using the ratio

sin40° = \frac{b}{20}

Multiply both sides by 20

20 × sin40° = b, hence

AC = b = 20 × sin40° ≈ 12.9

5 0
3 years ago
Read 2 more answers
Suppose we have an unfair coin that its head is twice as likely to occur as its tail. a)If the coin is flipped 3 times, what is
Alenkinab [10]

Answer: a) 0.2222, b) 0.3292, c) 0.1111

Step-by-step explanation:

Since we have given that

Let the probability of getting head be p.

Since,  its head is twice as likely to occur as its tail.

p+\dfrac{p}{2}=1\\\\\dfrac{3p}{2}=1\\\\p=\dfrac{2}{3}

a)If the coin is flipped 3 times, what is the probability of getting exactly 1 head?

So, here, n  = 3

p=\dfrac{2}{3}

q=\dfrac{1}{3}

Now,

P(X=1)=^3C_1(\dfrac{2}{3})^1(\dfrac{1}{3})^2=0.2222

b)If the coin is flipped 5 times, what is the probability of getting exactly 2 tails?

2 tails means 3 heads.

So, it becomes,

P(X=3)=^5C_3(\dfrac{2}{3})^3(\dfrac{1}{3})^2=0.3292

c)If the coin is flipped 4 times, what is the probability of getting at least 3 tails?

P(X\leq 1)=\sum _{x=0}^1^4C_x(\dfrac{2}{3}^x(\dfrac{1}{3})^{4-x}=0.1111

Hence, a) 0.2222, b) 0.3292, c) 0.1111

8 0
3 years ago
N +8=4<br> Well I’m stupid so someone help
Vladimir [108]

Answer:

n = - 4

Step-by-step explanation:

n + 8 = 4

n = 4 - 8

n = - 4

8 0
3 years ago
9. Given a scale factor of 3, find the coordinates for the dilation of a triangle with vertices at
11Alexandr11 [23.1K]

The coordinates for the dilation of a triangle is (3 12), (12.15), and (6.0).

  • If the coordinate (x, y) is dilated by a scale factor of k, the resulting coordinate will be at (kx, ky)

  • Given the coordinate of the triangle (1 4). (4.5), and (2.0), if this coordinate is dilated by a factor of 3, the resulting coordinates will be at (3 12), (12.15), and (6.0).

Hence the coordinates for the dilation of a triangle is (3 12), (12.15), and (6.0).

Learn more on dilation here: brainly.com/question/10253650

6 0
2 years ago
Find −5 2/3 − 1/6 Write your answer as a mixed number in simplest form.
Ksju [112]

Answer:

   -5\frac{5}{6}

Step-by-step explanation:

3 0
3 years ago
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