Given:15y+7=12-20y prove:y=1/7 (I just need the prove thanks)

Answers

Answer 1

Answer:

15y+7=12-20y (add 20y to both sides)

35y+7=12 (minus 7 from both sides)

35y = 5 (divide both sides by 35) (5/35=1/7)

y= 1/7

Answer 2

Answer:

64/7 = 64/7 yes y = 1/7

Step-by-step explanation:

To prove this we simply have to plug in!

15(1/7) + 7 = 12 - 20(1/7) (simplify)

15/7 + 7 = 12 - 20/7 (simplify further)

64/7 = 64/7

So yes y = 1/7


Related Questions

a triangles inside angles all add up to how many degrees​

Answers

Answer:

.?????¿¿????????????????

Answer:

180!

Angles in a triangle sum to 180°

f(2) =
Evaluate the function for the given value

Answers

You would solve the function but you would replace the variable with the number in the parenthesis. Like if it was f(2)=3x+4 then you would do 3(2)+4 which is 10.

You evaluate it and the answer would be f(2)=2f.

A line contains the points (10,7) and (5,-8). Write the equation of the line.

Answers

Y=3x-23
.
Hope this helps :)

Find the slope of the line y=1/6+3/2

Answers

Answer:

1/6 if you meant to put an X afterwards. If not, there is no slope.

Step-by-step explanation:

4. Add. 2a + 8 + 4b + 5

Answers

Answer:

Step-by-step explanation:

2a + 4b + 8 + 5

2a + 4b + 13

Find the value of X
101
92
54
87

Answers

I believe it would be 92 degrees. The 3 angles add up to 268 degrees, and all of the outside angles should add to 360 degrees. So 360-268=92.

ASAP help I don’t have time! It detects if it’s right or not:(((

Answers

Answer:

I'm pretty sure it's B! :)

Find the length of the missing side. Leave your answer in simplest
radical form. *

Answers

Answer:

About 14

Step-by-step explanation:

For this you use the pythagorean theorem, which says a(a) + b(b) = c(c)

The sides that make the right angle are legs which is A and B

The other side is the hypotenuse which is C

So you set it up as

11(11) + b(b) = 18(18)

121 + b(b) = 324

324 - 121 = 203

so b(b) = 203

but 203 is b squared so you need to find the square root of 203 which is about 14.2478.

If you round that it is 14

Check

11(11) + 14(14) = 18(18)

121 + 196 = 324

317 = 324

so about

she remaining amount Lily has yet to pay Megan is $. Lily owed Megan $129.42. So far, she has paid Megan $32.56.?????

Answers

Answer:

129.42 - 32.56 = 96.86$

Find the sum of 6x2 + 10x – 1 and -5x2 – 2x + 1.

Answers

Answer:

x2+8x

Step-by-step explanation:

-22 and -11 is ur answer I think

May someone tell me what the value of x is ?

Answers

Answer:

maybe 11? because it says to Subtract the sum of the two angles from 180 degrees. The sum of all the angles of a triangle always equals 180 degrees. Write down the difference you found when subtracting the sum of the two angles from 180 degrees. This is the value of X.

Step-by-step explanation:

is y = 17 X +2 proportional

Answers

Yes, it is proportional

Answer: No it is not proportional

All direct proportion equations are in the form y = kx, for some fixed number k.

If we had y = 17x, without the 2 at the end, then it would be in the form y = kx with k = 17. In other words, y = 17x is a direct proportion equation.

The 2 at the end is why we don't have a direct proportion equation. The y intercept must be 0. All direct proportion equations go through the origin.

hep please!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answers

Hm, D would equal either 5 or 6.

Answer: d=3

Step-by-step explanation:because if u plug it in that will be grater

Mary has been saving her weekly allowance for the past 20 weeks. She started with $100 and now has $300. Which equation can be used to find the amount of money Mary receives for her weekly allowance?

Answers

Answer:

Step-by-step explanation:

You should set this up as an y = mx + b equation. Since 300 is her final number, that will be your y value. She started with 100, so that will be your b value. 20 is the number related to the variable you don't know so that will be your m.

300 = 20x + 100

-100            -100

200 = 20x

divide both sides by 20

10 = x

y=x+10

30x+20y=1000

What is the solution to the system?

Answers

Answer:

x= 99 over 5

Step-by-step explanation:

Go and ask ur teacher

what is the volume of a 8 cm Cube​

Answers

Answer:

512 cm3

Step-by-step explanation:

Answer:

512 cm3 (cubic centimeters)

Step-by-step explanation:

The double-bar graph shows the win-loss records for the Carolina Panthers football team in the years 1995-2001. A bar graph titled Carolina Panthers Win Loss Record has year on the x-axis, and number of games on the y-axis. For games won, 1995, 7; 1996, 12; 1997, 7; 1998, 4; 1999, 7; 2000, 6; 2001, 1. For games lost, 1995, 8; 1996, 4; 1997, 8; 1998, 12; 1999, 7; 2000, 8; 2001, 15. During how many seasons did the Panthers win more games than they lost? a. 1 season b. 5 seasons c. 2 seasons d. 3 seasons Please select the best answer from the choices provided

Answers

Answer:

the answer is A

Step-by-step explanation:

Answer:

A

Step-by-step explanation:

ifunny is dankreloaded

I need help with the problem ​

Answers

A median i am 100% sure and i am in 11th grade so I can’t be wrong ;)

g(x)=2x+9g, left parenthesis, x, right parenthesis, equals, 2, x, plus, 9 g ( g(g, left parenthesis ) = 15 )=15right parenthesis, equals, 15

Answers

The answer is 3.  

Hope this helps!

                                         

A construction company is setting up signs on a 6 3/4 mile stretch of road. If the company places a sign every 3/4 of a mile, how many signs will it need?
Note: the company will place a Sign at the beginning of the stretch,
then every 3/4 of a mile.

Answers

Answer:

10

Step-by-step explanation:

6 3/4 ÷ 3/4 = 9, and plus the sign at the start of the road it would be 10

hope this helps :)

Cora and Hannah measured how high their pet frogs could jump. Cora's jumped x inches,
Hannah's jumped 5 inches less than Cora's. The frogs jumped a total of 53 inches together.
Circle the number that shows the distance Hannah's frog jumped.

Answers

can i see the question or the picture of it?

The Gwinnett fair is in town!! You and your friends decided to meet at the fair this weekend. You have earned $50 from math tutoring available to spend. Each ride costs $3 and each game costs $2. However, you don’t want to spend ALL your money on games and rides!



What are 5 possible combinations of rides and games that you could purchase without spending all of your money? Write your responses as ordered pairs (X,Y)

where (X = number of rides, Y = number of games)

For example: (2,3) means 2 rides and 3 games

Answers

Answer:

i tried but i dont understand sorry

Step-by-step explanation:

What is the value of y in the equation 3y - 8 = 22?

Answers

Answer:

The value of y in the equation is 10

Step-by-step explanation:

3y = 22 + 8

3y = 30

y = 30/3

Therefore; Y = 10

Find the value of x when 6 - 4x = 6x - 8x + 4. The value of x​

Answers

Answer:

1

Step-by-step explanation:

6 - 4x = 6x - 8x+ 4

6 - 4x = -2x + 4

-4x + 2x = 4 - 6

-2x = -2

x = -2/-2

x = 1

hope you understood❤

Answer is x=1 add 4x to both sides, add x variables together to make 2x, subtract 4 to get x by itself, 2=2x, divide to get answer


The equation that represents Runner #2 is t = 8.5d where t is time (in minutes) and d is distance in miles). If
Runner #2 runs 2 miles, how many minutes will it take?

Answers

Answer:

17minutes

Step-by-step explanation:

Given the equation of the time t = 8.5d took by aa runner to ru n. If the runner ran 2 miles, to calculate the time take by the runner to run two miles, we will substitute d = 2 into equation and calculate t as shown;

t = 8.5d

t = 8.5(2)

t = 17.0 minutes

Hence it will take the runner 17minutes to run 2 miles.

Runner #2's equation is an illustration of proportional equations

It will take runner #2 17 minutes to run 2 miles

Runner #2's equation is given as:

[tex]\mathbf{t = 8.5d}[/tex]

When runner #2 runs two miles, it means that:

d = 2

Substitute 2 for d in the given expression.

So, we have:

[tex]\mathbf{t = 8.5 \times 2}[/tex]

Multiply

[tex]\mathbf{t = 17}[/tex]

Hence, it will take runner #2 17 minutes to run 2 miles

Read more about proportional equations at:

https://brainly.com/question/894687

Classify each triangle by its angle and side :)

Answers

Answer:

Acute equilateral

Step-by-step explanation:

acute angles are less that 90* and equilateral triangles are each side equal

The period of a pendulum is the time the pendulum takes to swing back and forth. The function L=0.81t^2 relates the length L in feet of a pendulum to the time t in seconds that it takes to swing back and forth. A convention center has a pendulum that is 110 feet long. Find the period.

Answers

Answer:

11.73seconds

Step-by-step explanation:

Given the expression of length L in feet of a pendulum to the time t in seconds that it takes to swing back and forth modeled as;

L = 0.81t²

Given

Length of the pendulum = 110feet

Required

Time (period)

Substitute the given value into the formula

L = 0.81t²

110 = 0.8t²

t² = 110/0.8

t² =137.5

t = √137.5

t = 11.73seconds

Hence the period is 11.73seconds

Multiplicative inverse of the number -22

Answers

Answer:

x≠0 is 1x

Step-by-step explanation:

plz give me brainliest

Find the slope of the line that passes through the points (2, 5) and (-1, 2). If you get stuck, try plotting the points on graph paper and drawing the line through them with a ruler.

Answers

Answer:

The slope is 1

Step-by-step explanation:

m=y²-y¹/x²-x¹

m= 2-5/(-1)-2

m= -3/-3

m=1

Don’t mind the other work. What are the independent and dependent variables of number 6?

Answers

Answer:pour some milk on it so you dont gotta do it

Step-by-step explanation:

Ur teacher will kick you out of the class and try drying the paper but ends up throwing it away

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