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saveliy_v [14]
3 years ago
13

Find the value of 3^-3x10^-3

Mathematics
2 answers:
galben [10]3 years ago
5 0
Answer: 1/27000

Explanation:

If 3^-1 = 1/3

Then 3^-3 = 1/3^3 = 1/27

And 10^-3 = 1/10^3 = 1/1000

3^-3 x 10^-3

= 1/27 x 1/1000
= 1/27000

dangina [55]3 years ago
4 0

Answer:

1/27000

Step-by-step explanation:

Use your calculator

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Suppose that the candy machine holds exactly 650 skittles, and every time someone inserts a quarter, exactly 7 skittles come out
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Answer:

510 skittles left in the machine

Step-by-step explanation:

7 skittles x 20 quaters = 140 skittles taken out

650 - 140 = 510

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Write the expression as a product of polynomials:
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(b+c)(x+3)
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Jasmine created this spinner to predict whether a randomly selected student in her school will be traveling during the upcoming
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Answer:

The number of students Jasmine surveyed indicated they would be traveling during the holiday break is 9.

Step-by-step explanation:

The spinner created by Jasmine, to predict whether a randomly selected student in her school will be traveling during the upcoming holiday break, has 8 equal sections labeled:

{yes, yes, no, no, no, no, no, no}

So, there are two sections labeled yes and six labelled as no.

Compute the probability of a yes as follows:

P(\text{yes})=\frac{2}{8}=0.25

Jasmine selected <em>n</em> = 36 students in her gym class.

If a student in her school will be traveling during the upcoming holiday break is independent of the other students.

Let the random variable <em>X</em> be defined as the number f students that will be traveling during the upcoming holiday break.

The random variable <em>X</em> follows a Binomial distribution with parameters <em>n</em> = 36 and <em>p</em> = 0.25.

Compute the expected value of <em>X</em> as follows:

E(X)=np\\=36\times 0.25\\=9

Thus, the number of students Jasmine surveyed indicated they would be traveling during the holiday break is 9.

8 0
3 years ago
Read 2 more answers
1. The 2006 General Social Survey contains information on the number of hours worked by a respondent each week. The mean number
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Answer:

A)σ_M = 1.2634

B) CI = (36.564, 41.516)

C) σ_M = 0.1151

Step-by-step explanation:

A) Formula for standard error is;

σ_M = σ/√n

We are given;

Mean; x¯ = 39.04

Standard deviation; σ = 11.51

Sample size; n = 83

Thus;

Standard error; σ_M = 11.51/√83

σ_M = 1.2634

B) formula for confidence interval is;

CI = x¯ ± z(σ_M)

z is critical value

At 95% Confidence interval, z = 1.96

Thus;

CI = 39.04 ± 1.96(1.2634)

CI = (39.04 + 2.476) and (39.04 - 2.476)

CI = (36.564, 41.516)

C) sample size is now increased to 10000

Thus,standard error is calculated as;

σ_M = 11.51/√10000

σ_M = 0.1151

8 0
3 years ago
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2 and 3/4 + 2 and 3/4= 4 and 6/4
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