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
mel-nik [20]
4 years ago
5

What does 2.75 mean in fraction

Mathematics
1 answer:
RUDIKE [14]4 years ago
5 0
If 2.75 + 2.75 = 5.5 

<span>Then, 4 x 2.75 = 11 </span>

<span>Which can also be expressed as 11 / 4 (= 2.75)</span>

<span>Given that 11 is a prime number, this fraction is in its simplest form</span>
You might be interested in
Myra reads 8 pages of her book. If this is 25% of her book. How many pages does she have left to read?
TiliK225 [7]
5 pages left in her book
5 0
3 years ago
When played, the middle C key on a piano has a frequency of 262 cycles per second.
IgorC [24]

Answer:

\displaystyle y = \frac{1}{2}sin\:524\pi{x}

Step-by-step explanation:

\displaystyle \boxed{y = \frac{1}{2}cos\:(524\pi{x} - \frac{\pi}{2})} \\ \\ y = Acos(Bx - C) + D \\ \\ Vertical\:Shift \hookrightarrow D \\ Horisontal\:[Phase]\:Shift \hookrightarrow \frac{C}{B} \\ Wavelength\:[Period] \hookrightarrow \frac{2}{B}\pi \\ Amplitude \hookrightarrow |A| \\ \\ Vertical\:Shift \hookrightarrow 0 \\ Horisontal\:[Phase]\:Shift \hookrightarrow \frac{C}{B} \hookrightarrow \boxed{\frac{1}{1048}} \hookrightarrow \frac{\frac{\pi}{2}}{524\pi} \\ Wavelength\:[Period] \hookrightarrow \frac{2}{B}\pi \hookrightarrow \boxed{\frac{1}{262}} \hookrightarrow \frac{2}{524\pi}\pi \\ Amplitude \hookrightarrow \frac{1}{2}

<em>OR</em>

\displaystyle y = Asin(Bx - C) + D \\ \\ Vertical\:Shift \hookrightarrow D \\ Horisontal\:[Phase]\:Shift \hookrightarrow \frac{C}{B} \\ Wavelength\:[Period] \hookrightarrow \frac{2}{B}\pi \\ Amplitude \hookrightarrow |A| \\ \\ Vertical\:Shift \hookrightarrow 0 \\ Horisontal\:[Phase]\:Shift \hookrightarrow 0 \\ Wavelength\:[Period] \hookrightarrow \frac{2}{B}\pi \hookrightarrow \boxed{\frac{1}{262}} \hookrightarrow \frac{2}{524\pi}\pi \\ Amplitude \hookrightarrow \frac{1}{2}

You will need the above information to help you interpret the graph. First off, keep in mind that although the exercise told you to write the sine equation based on the speculations it gave you, if you plan on writing your equation as a function of <em>cosine</em>, then there WILL be a horisontal shift, meaning that a C-term will be involved. As you can see, the photograph on the right displays the trigonometric graph of \displaystyle y = \frac{1}{2}cos\:524\pi{x},in which you need to replase "sine" with "cosine", then figure out the appropriate C-term that will make the graph horisontally shift and map onto the <em>sine</em> graph [photograph on the left], accourding to the <u>horisontal shift formula</u> above. Also keep in mind that the −C gives you the OPPOCITE TERMS OF WHAT THEY <em>REALLY</em> ARE, so you must be careful with your calculations. So, between the two photographs, we can tell that the <em>cosine</em> graph [photograph on the right] is shifted \displaystyle \frac{1}{1048}\:unitto the left, which means that in order to match the <em>sine</em> graph [photograph on the left], we need to shift the graph FORWARD \displaystyle \frac{1}{1048}\:unit,which means the C-term will be positive, and by perfourming your calculations, you will arrive at \displaystyle \boxed{\frac{1}{1048}} = \frac{\frac{\pi}{2}}{524\pi}.So, the cosine graph of the sine graph, accourding to the horisontal shift, is \displaystyle y = \frac{1}{2}cos\:(524\pi{x} - \frac{\pi}{2}).Now, with all that being said, in this case, sinse you ONLY have the exercise to wourk with, take a look at the above information next to \displaystyle Wavelength\:[Period].It displays the formula on how to define each wavelength of the graph. You just need to remember that the B-term has \displaystyle \piin it as well, meaning both of them strike each other out, leaving you with just a fraction. Now, the amplitude is obvious to figure out because it is the A-term, so this is self-explanatory. The <em>midline</em> is the centre of your graph, also known as the vertical shift, which in this case the centre is at \displaystyle y = 0,in which each crest is extended <em>one-half unit</em> beyond the midline, hence, your amplitude. So, no matter what the vertical shift is, that will ALWAYS be the equation of the midline, and if viewed from a graph, no matter how far it shifts vertically, the midline will ALWAYS follow.

I am delighted to assist you at any time.

4 0
3 years ago
What's the domain and range of y=-2x^2+5x-7
S_A_V [24]

Answer:

Domain: All real numbers Range: (-∞, -31/8]

Step-by-step explanation:

Since the parent function for this equasion is y=x^2, you know that the graph wil be parabolic in shape. All parabolic functions have a domain of all real numbers. Now when you rewrite the graph in vertex form, you will see that the top vertex is at y=-31/8, this is going to restrict the range to be (-∞, -31/8]. I have provided a graph using the app PhotoMath.

8 0
3 years ago
A relation is given below. {(0, 0), (2, 0.5), (4, 1), (3, 1.5), (4, 2), (5, 1.5), (6, 8)} Which ordered pair can be removed to m
dedylja [7]

Answer:

The first one is 4,1 and then every input must be paired with exactly one output

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
If 10 calculator cost £120 how much does 8 cost?
Alika [10]

Answer:

1 calculator cost £12  

120 divided by 10 = 12

now 8 x 12 = £96

8 calculators cost £96

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Other questions:
  • 9+10 please tell me.
    15·2 answers
  • Elizabeth is making a volcano for her science project. She determines that the radius of the base of the volcano
    9·1 answer
  • why are both the x-coordinate and y-coordinate generally needed to find the slope of the tangent line at a point for an implicit
    13·1 answer
  • You got a job selling magazines door-to-door. You are paid $100 per day plus $1.50 for each magazine you sell. Which recursive f
    12·1 answer
  • The slope and Y-Intercept for y=-x+2
    8·1 answer
  • Write the quadratic function in vertex form.
    14·1 answer
  • Rotate Triangle ALT if A(-5,-1), L(-3,-2), T(-3,2) 90 degrees counterclockwise about the origin, then reflect the image over the
    7·1 answer
  • 6.089<br> x 3.4<br> go\ive mememefgehrfhueriuefvirwbgth5feqef
    6·2 answers
  • What is the mean of the following data: 7, 10, 13, 13, 5, 2, 20
    9·1 answer
  • Given that EFG is the right angle find x
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!