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2 years ago

(8x10^-3) ÷ (2x10^-4)

Mathematics

1 answer:

Lorico [155]2 years ago

5 0

Answer:

Step-by-step explanation:

8*10^-3=0.003

2*10^-4=0.0002

0.003÷0.0002=40

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Which shows the following expression after the negative exponents have been eliminated? xy^-6/x^-4 y^2, x=/0 y=/0

Tom [10]

For this case we have the following expression:
(xy ^ -6) / (x ^ -4y ^ 2)
By power properties we can rewrite the expression as:
(x * x ^ 4) / (y ^ 6 * y ^ 2)
Then, for power properties:
Same exponents are added:
(x ^ (4 + 1)) / (y ^ (6 + 2))
(x ^ 5) / (y ^ 8)
Answer:
An expression after the negative exponents have been eliminated is:
(x ^ 5) / (y ^ 8)

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2 years ago

Read 2 more answers

Make all the factors of 15 1 through 6 make group

stealth61 [152]

1, 3, and 5 because you can multiply all these numbers to get 15

4 0

3 years ago

Directions are on the sheet. Please help.

azamat

Answer:

here x = 20 and y = 50.....

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2 years ago

In a population where 77% of voters prefer Candidate A, an organization conducts a poll of 19 voters. Find the probability that

Rus_ich [418]

Answer:

$P(X=14)=(19C14)(0.77)^{14} (1-0.77)^{19-14}=0.1928$

Then the probability that 14 of the 19 voters will prefer Candidate A is approximately 0.1928 or 19.28%

Step-by-step explanation:

We can define X the random variable of interest "number of voters that will prefer Candidate A", since we have a sample size given and a probability of success we can use the binomial distribution to model the random variable. And on this case we can assume the following distribution:

$X \sim Binom(n=19, p=0.77)$

The probability mass function for the Binomial distribution is given by:

$P(X)=(nCx)(p)^x (1-p)^{n-x}$

Where (nCx) means combinatory and it's given by this formula:

$nCx=\frac{n!}{(n-x)! x!}$

For this problem we want to find this probability:

$P(X=14)$

And usign the probability mass function defined before we got:

$P(X=14)=(19C14)(0.77)^{14} (1-0.77)^{19-14}=0.1928$

Then the probability that 14 of the 19 voters will prefer Candidate A is approximately 0.1928 or 19.28%

3 0

2 years ago

Will give brainliest please explain steps

irina [24]

OK first box: ask yourself: 2 to the what power equals 1024? The answer is 10. 2^10 equals 1024. You can also find that by taking the natural log of both sides and solving for x.

Second box: the term is just an inverse of the previous. When you bring the 2 up you have to change the exponent to a negative: you have 2^-10

First box:10
Second box:-10

Thank you

6 0

2 years ago

(8x10^-3) ÷ (2x10^-4)​

(8x10^-3) ÷ (2x10^-4)