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TEA [102]
2 years ago
9

Solve the equation. 24 = 2x – 9

Mathematics
2 answers:
Lyrx [107]2 years ago
8 0
Add 9 to both sides
So
33=2x
Divide both sides by 2
So
X=16.5
aleksandrvk [35]2 years ago
8 0
Answer: x=16.5

24=2x-9
Add 9 to each side
33=2x
Divide both sides by 2
16.5=x
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Step-by-step explanation:

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3 years ago
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}

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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
The real numbers x for which |x-19| = - (x-19) are?
Novosadov [1.4K]

Answer:

x = 19

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8 0
2 years ago
Which statement is true about the difference 2 square root of 7 − square root of 28?
3241004551 [841]
<span> 2 square root of 7 − square root of 28
= 2</span>√7 - √28
= 2√7 - 2√7
= 0
4 0
3 years ago
Read 2 more answers
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