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
andrew11 [14]
3 years ago
14

Which of these figures has rotational symmetry

Mathematics
1 answer:
JulijaS [17]3 years ago
6 0

Answer:

D or C more than likely D

Step-by-step explanation:

You might be interested in
An SRS of 27 students at UH gave an average height of 5.6 feet and a standard deviation of .1 feet.Construct a 90% confidence in
Juliette [100K]

Answer:

Option a) [5.567, 5.633]                

Step-by-step explanation:

We are given the following in the question:  

Sample mean, \bar{x} = 5.6 feet

Sample size, n = 27

Alpha, α = 0.10

Sample standard deviation, s = 0 .1 feet

90% Confidence interval:  

\bar{x} \pm t_{critical}\displaystyle\frac{s}{\sqrt{n}}  

Putting the values, we get,  

t_{critical}\text{ at degree of freedom 26 and}~\alpha_{0.10} = \pm 1.7056  

5.6 \pm 1.7056(\displaystyle\frac{0.1}{\sqrt{27}} ) = 5.6 \pm 0.0328 = (5.5672 ,5.6328) \approx (5.567,5.633)  

Option a) [5.567, 5.633]

7 0
3 years ago
Can any one help me with the answers to these questions ASAP?
Leni [432]
1.c
3.c 153
These are the ones that I could solve
5 0
3 years ago
Read 2 more answers
Prove that 2n^3 + 3n^2 + n is divisible by 6 for every integer n > 1 by mathematical induction. (7 marks)
notka56 [123]

Answer:

The answer is True

Step-by-step explanation:

A <em>mathematical induction</em> consists in only 2 steps:  

<u>First step</u>: Show the proposition is true for the first one valid integer number.

<u>Second step</u>: Show that if any one is true then the next one is true  

Finally, if first step and second step are true, then the complete proposition is true.

So, given 2*n^3+3*n^2+n

First step: using and replacing n=2 (the first valid integer number >1)

2*(2)^3 +3*(2)^2+2=30

\frac{30}{6} =5

As the result is an integer number, so the first step is true.

Second step: using any next number, n+1, let it replace

2*(n+1)^3+3*(n+1)^2+(n+1)\\2*(n^3+3*n^2+3*n+1)+3*(n^2+2*n+1)^2+(n+1)\\2*n^3+6*n^2+6*n+2+3*n^2+6*n+3+n+1\\(2*n^3+3*n^2+n)+(6*n^2+12*n+6)

As the First step is true, we know that

2*n^3+3*n^2+n=6*k,

So let it replace in the previous expression

6*k+6*(n^2+2*n+1)\\6*[k+(n^2+2*n+1)]

Finally

\frac{6*[k+(n^2+2*n+1)]}{6} =k+(n^2+2*n+1)

where the last expression is an integer number

So the second step is true, and the complete proposition is True

5 0
2 years ago
A 10 ft vertical post casts a 16 in shadow At the same time a nearby cell phone tower cast a 124 ft shadow
chubhunter [2.5K]
10/16=x/124
X=(124)(10)/(16)=1240/16=80
5 0
2 years ago
A basketball hoop is 30% off the sticker price of $125.30. How much is the discount?
EleoNora [17]
37.59
Just multiple .3 x 125.30
6 0
3 years ago
Other questions:
  • Easy to Find, a computer data base, charges $30/h during peak hours to access its records. The charge during off-peak hours is $
    14·1 answer
  • Select all that apply. Choose the numbers that are factors of 112. (Hint: Use the divisibility rules to help you!) 2 3 4 6 7 8
    8·2 answers
  • 9/g +2h+5 g=3 ad h=6
    8·1 answer
  • 16x24 equals how many square feet
    6·1 answer
  • What is 1/2 subtract 1/6 divided by 4
    5·2 answers
  • 3
    5·1 answer
  • Tim and Tom are trying to earn money to buy a new game system over a 3-month period. Tim saved $45.28 each month. If they need a
    13·1 answer
  • A rectangular swimming pool is 6 ft deep. One side of the pool is 4.5 times longer than the other. The amount of water needed to
    10·2 answers
  • A total of 42 gallons of a glycol solution needs to be added to a heating water loop to ensure the water does not freeze if ther
    13·1 answer
  • Translate the triangle.
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!