4. Which of the following formulas can be used to write 0.797979... as a fraction?

Answer:

The options are not shown, so i will answer this in a general way.

When we have a number like:

0.7979....

The steps to writing it as a fraction are the following ones:

1) First, you need to notice the repeating decimals.

In this case is easy to see that the repeating decimals are two, 7 - 9

2)we can multiply this number by 10^n, where n is the number of repeated decimals, in this case n = 2

10^2 = 100

then:

0.7979...*100 = 79.7979...

Now we can subtract the original number:

79.7979... - 0.7979 = 79

And this is equivalent to have:

0.7979..*100 - 0.7979... = 0.7979..*99 = 79

Then we know that if we multiply our number by 99, the outcome will be an integer.

Then we can multiply and divide by the same number (this is equivalent to multiply by one) as follows:

0.7979...*1 = 0.7979..*(99)/(99)  = (0.7979..*99)/99 = 79/99

Then:

0.7979... =  79/99

Answer:

[tex]S_{inf.} - \frac{\frac{79}{100} }{1-\frac{1}{100} }[/tex]

Pretend "inf." is the infinity symbol, I couldn't put the actual symbol. It's option B.

sixty-seven AND ninety-four THOUSANDTHS in standard form.

(2, 6) & (2,7)
Find the slope

I NEED HELP NOW PLEASE
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0.003

0.03

0.3

3.0

Write how u solved it
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14. -24,22
15. -5,9
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17. -2,2
18. -17,-15

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PLEASE HELP ASAP WILL CHOOSE BRAINLIEST FOR CORRECT ANSWER GIVING 20 PTS

System A-
-x-2y=7
5x-6y=-3
Solution: (-3, -2)

Choose the correct option that explains what steps were followed to obtain the system of equations below.

System B:
-x-2y=7
-16y=32

A. To get system B, the second equation in system A was replaced by the sum of that equation and the first equation multiplied by 3. The solution to system B will be the same as the solution to system A.
B. To get system B, the second equation in system A was replaced by the sum of that equation and the first equation multiplied by -6. The solution to system B will not be the same as the solution to system A.
C. To get system B, the second equation in system A was replaced by the sum of that equation and the first equation multiplied by -5. The solution to system B will not be the same as the solution to system A.
D. To get system B, the second equation in system A was replaced by the sum of that equation and the first equation multiplied by 5. The solution to system B will be the same as the solution to system A.

please helpp and take ur time

using the substitution property of equality, if y= -5 and 7y + x = 11, then ___

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A cinema sold 1000 tickets on a Saturday evening. Adult tickets cost £9, children's tickets cost £5, and a total of £6680 was collected
If there are a Adult tickets and cChildren tickets, write down two simultaneous
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Solve your equations to find how many tickets of each kind were sold.
A=
C=

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Plz plz plz help
I’ll give brainliest to first correct answer!

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Find the slope of the line passing through the points (-7, -3) and (6,-3

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Help yall girl for 30 point

Will mark brainliest for whoever answers

Consider the rectangle.
4
x+1
-
Which pair of expressions represents the area of the rectangle?
O 2(x + 1) + 2 (4) and 2x +9
O 2(x + 1) +2 (4) and 2x + 10
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The sum of three consecutive numbers is 84. What is the largest of these numbers? (5 points) a 28 b 26 c 29 d 27

4. Solve the system of equations. (6 points)
2x-3y - 21
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Part I: Explain the steps you would take to solve the system by eliminating the x-terms. (1 point)
Part II: Explain the steps you would take to solve the system by eliminating the y-terms. (2
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Part III: Choose either of the methods described in parts I or II to solve the system of equations.
Write your answer as an ordered pair. Show your work. (3 points)

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My dog, Lilly, weighs 3.8 pounds.
Round this to the nearest whole
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Lilly weighs about [?] pounds.

Jina is saving money to buy a bike. She has $63 and is going to save an additional $9 each week. The bike costs $198. In how many weeks will she have
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(a) Write an equation that could be used to answer the question above.
First, choose the appropriate form. Then, fill in the blanks with the
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NEED ASAPPPPPPPPPPPPPPPPP HURRY