Is 9.78778777... a rational or irrational number?

Answers

Answer 1

The answer is - Irrational

Answer 2

The given decimal number 9.78778777... is non-terminating and non-recurring it is an irrational number.

The given decimal number is 9.78778777....

We need to check whether the given decimal number is a rational or irrational number.

What are rational and irrational numbers?

Rational numbers: Rational numbers are in the form of p/q, where p and q can be any integer and q ≠ 0. This means that rational numbers include natural numbers, whole numbers, integers, fractions of integers, and decimals (terminating decimals and recurring decimals).

Irrational numbers: Irrational numbers are the set of real numbers that cannot be expressed in the form of a fraction, p/q where p and q are integers. The denominator q is not equal to zero (q ≠ 0). Also, the decimal expansion of an irrational number is neither terminating nor repeating.

So, from the definition of rational and irrational numbers, we can say the given decimal number 9.78778777... is irrational.

Since the given decimal number 9.78778777... is non-terminating and non-recurring it is an irrational number.

To learn more about rational and irrational numbers visit:

https://brainly.com/question/3386568.

#SPJ2

Related Questions

can someone help me understand this

Answers

Answer:

The answer for the question is E.

If x to the first power is a line, and you multiply two lines together, what do you get? Think of the the exponent.

Answers

Answer: A quadratic equation (also called a parabola)

Step-by-step explanation:

A line can be written as:

f(x) = a*x + c

This is a polynomial with degree 1.

Now, of we have two lines:

f(x) = a*x + c

and:

g(x) = d*x + e

And we multiply them, we will get:

f(x)*g(x) = (a*x + c)*(d*x + e) = a*d*x^2 + a*e*x + c*d*x + c*e

We can rewrite this as:

= (a*d)*x^2 + (a*e + c*d)*x + (c*e)

This is a polynomial of degree = 2, this is a quadratic equation, then if you multiply two lines together, you get a quadratic equation (or a parabola)

Answer:

ax^2+ bx + c

Step-by-step explanation:

I get a parabola, that is, an equation of the second degree

v=u + at
u= 2
a= -5
t = 1/2
Work out the value of v.

Answers

Answer:

V= -1/2

Step-by-step explanation:

You would have to add U+AT to get V

If A=-5 and T=1/2, then -5*1/2= -2.5 (A*T)

Then, adding U (which is 2), gives -.5, or -1/2

someone please solve and find the corresponding angles thanks

Answers

the correct option is b

SOMEONE ANWSER QUICK !

If you want to solve the system of equations below using the elimination methiod, which of the following should NOT be
your first step:

-3x + 4y = 0
2 - 2y = 8

A)Multiply every term in the bottom equation by 3.

B) Multiply every term of the bottom equation by 2.

C) Multiply every term of the bottom equation by -3.

D Multiply every term of the top equation by 2, and every term of the bottom equation by 4.

Answers

Answer:

I think that the answer would be C because you have to multiply the term at the top. This would mean you would not do C. Sorry if this is wrong. At least you have your eliminating process now. lol so doing C is out of the box, which makes C your answer.

Step-by-step explanation:

How do I solve this equation by completing the square. 4X^2 + 12x +5 = 21

Answers

The Answer is: x1=-4 x2=1.

I need help with this

Answers

Answer:

24.3470022334

Step-by-step explanation:

I hope this helps. It really isn’t too hard. All you need to do is find the multiples of 24

I need help one this question.

Answers

Answer:

-2

Step-by-step explanation:

the y-intercept is -2

Answer:

y=2x-2

Step-by-step explanation:

Find the slope.

y1-y2/x1-x2

2-(-2)/2-0

That gives you 4/2 or a slope of 2.

The y intercept is at -2.

Y=2x-2

Even if you don’t think it is an independent variable, _____ is usually always plotted on the “x” axis.

Help?

Answers

Answer:

Y axis is dependent

Step-by-step explanation:

and x axis is independent, so if its on the x axis, its alwasy a independent variable, hope it helped Lol

What is 149/15 as a mixed number?

Answers

Answer:

its an improper

mixed : 9 14/15

Step-by-step explanation:

its a mixed number if the number at the tops in the limit and there is a number at the side that represents whole number(s)

Answer:

the answer is 9 14/15

Step-by-step explanation:

Step 1 - Find Whole Number

Calculate out how many times the denominator goes into the numerator. To do that, divide 149 by 15 and keep only what is to the left of the decimal point:

149 / 15 = 9.9333 = 9

Step 2 - Find New Numerator

Multiply the answer from Step 1 by the denominator and deduct that from the original numerator.

149 - (15 x 9) = 14

Step 3 - Get Solution

Keep the original denominator and use the answers from Step 1 and Step 2 to get the answer. 149/15 as a mixed number is:

The total cost of renting a banquet hall is a function of the number of hours the
hall is rented. The owner of the banquet hall charges $45 per half hour up to a
maximum of 5 hours and a $50 cleaning fee. The equation used to express the
situation is C = 45h + 50, where h is the number of half hours. What is the
greatest value in the range for this situation?

Answers

9514 1404 393

Answer:

$500

Step-by-step explanation:

The greatest rental time is 5 hours, which is 10 half-hours. The value of C for h=10 is ...

C = 45·10 +50 = 450 +50 = 500

The greatest value in the range for this situation is $500.

can you please help me with this

Answers

Answer:

Dot plot

Step-by-step explanation:

Each dot on on 0.84 represents each plane. 5 planes had a average cruising speed of 0.84.

Which value of x makes the equation x + 7 = 21 true?
O A. 7
O B. 14
O c. 21
OD. 28

Answers

Answer:

b. 14

Step-by-step explanation:

Which table does NOT show y as a function of x?

Answers

Answer:

Step-by-step explanation:

I don’t really know what to say haha, it’s easy

The obriens are buying new windows for their house. The company installs the new windows for 2100 the total cost for buying the windows and having them installed is 5323.50 of the o'briens pay 230.25 per window how many windows did they buy

Answers

Answer:

Step-by-step explanation:

Given that:

Cost of purchase and installation = 5323.50

Cost per window = 230.25

Cost of installation = 2100

Hence,

Total purchase cost of windows alone :

5323.50 - 2100 = 3,223.50

Therefore, the number of windows purchased is :

(Total purchase cost of windows alone / price per window)

(3,223.50 / 230.25)

= 14

Hence, 14 windows was purchased

If a 70 kg person on a 15 kg sled is pushed with a force of 300 N, what will be person's
acceleration?

Answers

4 m/s

Explanation:
From Newton’s second Law
F = ma

a
=
F
m
=
300 N
60 kg + 15 kg
=
300 N
75 kg
=
4 m/s
2

Find two numbers with sum 82 and difference 30.

Answers

Answer: I think it would be 112.

Step-by-step explanation:

In a football stadium, 43% of the crowd cheering for Team A, and 52% of the crowd is female. 19% of the crowd is cheering for Team A and female . What is the probability that a randomly selected Person from the crowd are cheering for Team A or female?

Answers

P(TeamA) = 0,43
P(Female) = 0,52
P(TeamA and Female) = 0,19
P(TeamA or Female) = ?

P(TeamA or Female) = P(TeamA) + P(Female) - P(TeamA and Female) <=>

P(TeamA or Female) = 0,43 + 0,52 - 0,19 <=>

P(TeamA or Female) = 0,76 or 76%

What is the ratio 28 : 35 written in lowest terms?
A.9: 15
B.7:19
C.4:5
D.3:7

Answers

Answer:

4:5

Step-by-step explanation:

both sides divide by 7

EEEEEEEEEEEEEEEEEEEEEEEE

Answers

It would be c & d because -2<-1 is the correct answer

please help me i don’t understand how to do this

Answers

what do u need help with?

can someone answer the questions on my page if so ill give all the correct answers brainlist.

Answers

Oh okay that’s a bet

15PTS PLEASE HELP ASAP!
(dont write random answers pls))

Answers

Answer:

i think the answer is (-8,-12) but i may be wrong plese correct me if i am

Step-by-step explanation:

quick!! write an equation in slope intercept form using points (-3,0) (3,-4) !

Answers

Answer:

i dunno but the slope is -4/6

Step-by-step explanation:

y=-2/3x -2 this is the slips intercept form
You do y1-y2/x2-x1 and then find the rest using y=mx+b

PLEASE I NEED AN ANSWER NOW WILL MARK U BRAINLIEST!!!1!
how do u find y intercept without a graph for systems of equations? (y = x - 6)

Answers

Answer:

-6 is the y intercept.

the number added or subtracted from the x in the slope intercept form is always the y intercept

Step-by-step explanation:

plz mark me brainliest

transversals angles

Answers

B. 2 because it is inside and on the same side as 1

PLEASE ANSWER! 15 POINTS

Answers

Answer: 13/15

Step-by-step explanation:

1/5 + 2/3 = 13/15. Since 13/15 can’t be simplified, that’s your answer.

A seed company planted a floral mosaic of a national flag. The perimeter of the flag is 420 feet. Determine the flag's length and width if the length is 110 feet greater than the width. Use pencil and paper. Write three situations to which you could apply the resulting system of equations.
What is the length of the flag?

Answers

Answer:38

Step-by-step explanation:

y = m + mnp
Solve for n.
pls help me

Answers

Answer:

n = y - m/mp

Step-by-step explanation:

y = m + mnp

y - m = mnp

y - m/mp = mnp/mp

y - m/mp = n

what is the quotient of 6 1/4 ÷ (-5/8)

Answers

Answer: -10

Step-by-step explanation:

1. Convert 6 1/4 to an improper fraction

25/4

2. Find the quotient using the keep, change, flip method

- Keep the first fraction (25/4)

- Change the division sign to a multiplication sign

- Flip the second fraction (i.e. find the reciprocal)

-5/8 -> -8/5

3. Multiply and solve by multiplying the numerators and denominators together respectively

25/4 * -8/5

25*-8 = -200

4*5 = 20

-200/20 = -10

Answer:

[tex]-\frac{12}{5}[/tex]

Step-by-step explanation:

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