3 years ago

I am so confused... please help!

Mathematics

1 answer:

nydimaria [60]3 years ago

5 0

Answer:

Step-by-step explanation:

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Please Help me answer all 4 questions with a full explanation so I can solve the rest on my own.

Nata [24]

$\\ \rm\Rrightarrow (2x^2)^3.2yx^0=8x^6.2y=16x^6y$

$\\ \rm\Rrightarrow (2x^4y^3)^3.2x^4y^4=8x^{12}y^6.2x^4y^4=16x^{16}y^{10}$

$\\ \rm\Rrightarrow (m^3n^0(2m^3n^2)^4)^2=(m^316m^{12}n^8)^2=(16m^{15}n^8)^2=256m^{30}n^{16}$

$\\ \rm\Rrightarrow (2xy^3)^2.2x^2y^0=4x^2y^6.2x^2=8x^4y^6$

6 0

2 years ago

7/5 + 4/20<br><br> Answers should be in format example: 5/2 or 2/5. No decimals or mixed numbers.

kipiarov [429]

Answer: 32/20 or 8/5

Step-by-step explanation: Turn 7/5 into 28/20. Do 28/20 plus 4/20. That equals 32/20 or 8/5.

7 0

3 years ago

Read 2 more answers

Solve for x 3x + 2 y;y=

Nataly [62]

Answer:

I beleive its 6

Step-by-step explanation:

5 0

3 years ago

Read 2 more answers

Find the surface area

Zinaida [17]

Answer:5400

Step-by-step explanation:

A= 6a*2

6x9x10*2= 5400

4 0

3 years ago

American kestrels live in More Mesa near your professor’s house. Suppose that there are 100 birds, of which a random sample of s

Ulleksa [173]

Answer:

P(X=3) = 0.2013

Step-by-step explanation:

After taking and tagging the first 20 birds, then we have a proportion of 20% of tagged birds within the population, that is

$p=\frac{n}{N}$

$p=\frac{20}{100}=0.20$

Supposing that the probability (0.20) of capturing a bird <em>remains constant</em>, we may resolve it as it follows:

Capturing 10 birds can be considered as a binomial experiment with a success probability p = 0.2

Let, $P(X=x)=nCx*p^{x}*(1-p)^{n-x}$ be the expression of the binomial distribution, for our case we have:

p=0.2

x = 3

n=10

Then,

$P(X=3)=10C3*0.2^{3}*0.8^{10-3}$

$P(X=x)=0.2013$

Therefore, the probability that exactly 3 of the 10 birds in the new sample were previously tagged is 20.13%

5 0

3 years ago