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Amiraneli [1.4K]
3 years ago
11

Pls helpppp I want good grades

Mathematics
2 answers:
iogann1982 [59]3 years ago
8 0

I believe the answer is 2.7 but I'm not sure...

Artemon [7]3 years ago
7 0

Answer:

2 7/9

Step-by-step explanation:

I think this is the answer. when you have a -- its adds. So i added the 3 to the -2/9.

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How many variable are in the expression 3x3y + 5x2 - 4y
zhenek [66]

technically, here are 4, but since they are both x's and y's I guess there's 2 since they equal the same value

5 0
3 years ago
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A given binomial experiment has n=100 trials and p=1/3. Is it more likely to get x=20 successes or x=45 successes. Why?
soldi70 [24.7K]

Answer:

The P(x=45) is more that the P(x=20). Therefore x=45 successes is more likely to get.

Step-by-step explanation:

Given information: n=100 and p=1/3.

According to the binomial distribution, the probability of getting r success in n trials is

P(x=r)=^nC_rp^rq^{n-r}

where, n is total trials, p is probability of success and q is probability of failure.

Total trials, n = 100

Probability of success, p = \frac{1}{3}

Probability of failure, q = 1-\frac{1}{3}=\frac{2}{3}

The probability of 20 successes is

P(x=20)=^{100}C_{20}\times (\frac{1}{3})^{20}\times (\frac{2}{3})^{100-20}

P(x=20)=\frac{100!}{20!(100-20)!}\times (\frac{1}{3})^{20}\times (\frac{2}{3})^{80}\approx 0.001257

The probability of 45 successes is

P(x=45)=^{100}C_{45}\times (\frac{1}{3})^{45}\times (\frac{2}{3})^{100-45}

P(x=45)=\frac{100!}{45!(100-45)!}\times (\frac{1}{3})^{45}\times (\frac{2}{3})^{55}\approx 0.004296

The P(x=45) is more that the P(x=20). Therefore x=45 successes is more likely to get.

3 0
4 years ago
Given A = 1 /2 (b1 + b2)h, solve for h.
Tatiana [17]

Answer: b: h=2a/b1+b2

Step-by-step explanation:

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What is the third side ? due in 2 days
DerKrebs [107]

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the third side could be 8 or 2

Step-by-step explanation:

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3 years ago
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