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
o-na [289]
3 years ago
7

Part A: Find a rational number that is between 7.7 and 7.9. Explain why it is rational. (2 points)

Mathematics
1 answer:
8_murik_8 [283]3 years ago
6 0
A rational number is any number that can be written as the ratio between two other numbers i.e. in the form \frac{a}{b}

Part A:
An easy choice that makes sense is 7.8, right in the middle. To prove that it's rational we need to write it as a ratio. In this case we have 7.8=\frac{78}{10}

Part B:
We need a number that can't be written as a ratio (because it neither terminates nor repeats). Some common ones are \sqrt{2}, e, \phi and \pi so it makes sense to try and use those to build our number. In this case \frac{11\sqrt{2}}{5}\approx7.78 works nicely. 
You might be interested in
Write a system of two linear equations showing the distance each animal can
pantera1 [17]

Answer:

X

Step-by-step explanation:

X=input(time) 6 minutes both

3 0
3 years ago
-3(5+8r)=33-8r what is the work and answer
Lelu [443]
<span>-3(5+8r)=33-8r
-15 - 24r = 33 - 8r
-15 - 33 = - 8r + 24r
-48 = 16r
-48/16 = r
-3 = r
r = -3</span>
6 0
3 years ago
Read 2 more answers
Which equations are related equations to x + 5 = 34?
myrzilka [38]

Answer:

the answer is 5=34−x and x=34−5

Step-by-step explanation:

i just got finished taking the test in 7th grade k12

3 0
3 years ago
Can someone put a website to help me understand this?
Alenkinab [10]

Answer:

67

Step-by-step explanation:

Since the diagonals in a rectangle are congruent, AC=BD and

7x+18=10x-3

We need to separate x -- to do that, we can first subtract 7x from both sides, resulting in

18=3x-3

Next, add 3 to both sides to get

21=3x

Divide both sides by 3 to get

x=7

Then, we just plug x into 10x-3 to get BD = 7*10-3 = 67

7 0
3 years ago
A business owner pays $1,200 per month in rent and a total of $120 per hour in employee salary for each hour the store is open.
Angelina_Jolie [31]

Answer: I'm pretty sure it's 200x - 120x = 1,200

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Other questions:
  • Find the limit (enter 'DNE' if the limit does not exist)
    15·1 answer
  • 2–67 a. And b. I don’t know what she estimated
    15·1 answer
  • 144% of what number is 33​
    10·1 answer
  • Write an equation in slope-intercept form for the line that has a slope of 3 and passes through (-1,2)
    6·2 answers
  • Find the derivative of f(x) = -2x2 + 11x at x = 9.
    5·1 answer
  • What is the circumference ​
    5·2 answers
  • A sum of money is divided among Khairul, Michael and Ethan in the ratio
    8·1 answer
  • Does this scatter plot show a positive trend a negative trend or no trend​
    7·1 answer
  • Solve the logarithmic equation with Properties of Logs
    7·2 answers
  • Cuánto es 7b + 2=23??
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!