1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
MAXImum [283]
2 years ago
9

May someone please help me, please? This is about exponents by the way. About 5 questions I need help with.

Mathematics
2 answers:
Rina8888 [55]2 years ago
8 0
Anything that is raised to 0 ALWAYS equals to 1.
Leno4ka [110]2 years ago
5 0

Answer:

1. 1  

2. 1

3. 16/81

4. 3

5. 3

Step-by-step explanation:

You might be interested in
You are working as an office apprentice for the bksb Newcastle Arena.
makvit [3.9K]

Answer:

Mean = £1.8 million


Step-by-step explanation:

The MEAN is the sum of all the numbers divided by the number of numbers.

  • <u>There are 5 numbers in total</u>
  • <u>The sum is 1.4+1.6+1.8+2.5+1.7=9 million</u>

Hence the mean is \frac{9}{5}=1.8 million

5 0
3 years ago
a road crew must repaved a road that is 2/3 miles long. they can repave 1/12 miles each hour. how long will it take the crew to
anastassius [24]
A long time honestly. 

roughly around 4 hours i would think
7 0
3 years ago
A courier service company wishes to estimate the proportion of people in various states that will use its services. Suppose the
Orlov [11]

Answer:

95.44% probability that the sample proportion will differ from the population proportion by less than 0.03.

Step-by-step explanation:

To solve this question, we need to understand the normal probability distribution and the central limit theorem.

Normal probability distribution

When the distribution is normal, we use the z-score formula.

In a set with mean \mu and standard deviation \sigma, the zscore of a measure X is given by:

Z = \frac{X - \mu}{\sigma}

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

Central Limit Theorem

The Central Limit Theorem estabilishes that, for a normally distributed random variable X, with mean \mu and standard deviation \sigma, the sampling distribution of the sample means with size n can be approximated to a normal distribution with mean \mu and standard deviation s = \frac{\sigma}{\sqrt{n}}.

For a skewed variable, the Central Limit Theorem can also be applied, as long as n is at least 30.

For a proportion p in a sample of size n, the sampling distribution of the sample proportion will be approximately normal with mean \mu = p and standard deviation s = \sqrt{\frac{p(1-p)}{n}}

In this question:

p = 0.05, n = 212, \mu = 0.05, s = \sqrt{\frac{0.05*0.95}{212}} = 0.015

What is the probability that the sample proportion will differ from the population proportion by less than 0.03?

This is the pvalue of Z when X = 0.03 + 0.05 = 0.08 subtracted by the pvalue of Z when X = 0.05 - 0.03 = 0.02. So

X = 0.08

Z = \frac{X - \mu}{\sigma}

By the Central Limit Theorem

Z = \frac{X - \mu}{s}

Z = \frac{0.08 - 0.05}{0.015}

Z = 2

Z = 2 has a pvalue of 0.9772

X = 0.02

Z = \frac{X - \mu}{s}

Z = \frac{0.02 - 0.05}{0.015}

Z = -2

Z = -2 has a pvalue of 0.0228

0.9772 - 0.0228 = 0.9544

95.44% probability that the sample proportion will differ from the population proportion by less than 0.03.

6 0
3 years ago
The perimeter of a rectangle is 61 feet. The length is 5 more than twice the width. What is the length and width?
DochEvi [55]

Answer:

Length = 22 feet Width= 8.5 feet

Step-by-step explanation:

Perimeter= 61

Let Width= x

Length= 2x+5

Perimeter= 2l + 2w

61= 2(2x+5) + 2x

61 = 2(2x+5+x)

61/2 = 3x+5

30.5 -5 = 3x

25.5 = 3x

25.5/3 =x

x= 8.5

Hence, width = 8.5 feet

Then, the length = 2x+5 = 2(8.5) +5 = 22 feet

Hope this helps!

6 0
3 years ago
Nine more than 3 times a number is the same as 6 less than twice the number
Ludmilka [50]

Answer:

Step-by-step explanation:

Let the number  = x

3x + 9 = 2x - 6  Looks like you are going to get something negative here.

Subtract 2x from both sides.

3x - 2x + 9 = 2x - 2x - 6

x + 9 = -6    

Subtract 9 from both sides.

x + 9 - 9 = - 6 - 9

Combine

x = - 15

7 0
3 years ago
Other questions:
  • A contractors crew can frame 3 houses in a week. How long will it take them to frame 54 houses if they frame the same number eac
    10·1 answer
  • From their location in the diagram, what are two possible values for m and n?
    13·1 answer
  • Suppose a number cube is rolled twice. What is the probability that an odd number will show both times?
    10·1 answer
  • What is the solution to -6 + 5(1-x) = - 13 – 7 x?
    12·2 answers
  • Can someone please help me with my math?
    12·1 answer
  • If a country’s debt to GDP ratio is currently 20% and its debt is expected to grow from 15 trillion to 25 trillion in the next 1
    9·1 answer
  • Is 0.93 less than 1?
    9·2 answers
  • Does 6(3−5w)=5(4−2w)−20w have one solution, no solution, or infinitely many solutions? <br><br> plzz
    12·1 answer
  • Do anyoneeeeeee know this??????????????????????????????????????
    5·2 answers
  • Factoring a quadratic with leading coefficient greater than 1 <br><br> 3n^2+5n+2=0
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!