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2 years ago

Enter numbers to write 0.000328

Mathematics

1 answer:

Makovka662 [10]2 years ago

7 0

Answer:

3.28 x 10^-4

Step-by-step explanation:

0.000328 = 3.28 x 10^-4

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Answer:

62/7

Step-by-step explanation:

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2 years ago

The average time taken to complete an exam, X, follows a normal probability distribution with mean = 60 minutes and standard dev

k0ka [10]

Answer: b. 0.8413

Step-by-step explanation:

Given : The average time taken to complete an exam, X, follows a normal probability distribution with $\mu=60\text{ minutes}$ and $\sigma=30\text{ minutes}$ .

Then, the probability that a randomly chosen student will take more than 30 minutes to complete the exam will be :-

$P(x>30)=P(z>\dfrac{30-60}{30})\ \ [\because\ z=\dfrac{x-\mu}{\sigma} ]\\\\=P(z>-1)=P(z-z)=P(Z$

[using z-value table]

Hence, the probability that a randomly chosen student will take more than 30 minutes to complete the exam = 0.8413

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2 years ago

Which represents the polynomial written in standard form?

pshichka [43]

Answer:

Option A.

Step-by-step explanation:

In order to write any polynomial in standard form, we need to check the degree of each term, then write each term in order of degree, from highest to lowest, left to right.

The given polynomial is

$8x^2y^2-\dfrac{3x^3y}{2}+4x^4-7xy^3$

Here, the combine degree of x and y in each term is 4.

If we arrange the terms according to the degree of x, then

$4x^4-\dfrac{3x^3y}{2}+8x^2y^2-7xy^3$

If we arrange the terms according to the degree of y, then

$-7xy^3+8x^2y^2-\dfrac{3x^3y}{2}+4x^4$

Hence, the correct option is A.

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Answer:

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