Mathematics High School

describe the process

Describe The Process

Answers

Answer 1

Answer:

x = 1

y = 10

Step-by-step explanation:

5x + y = 15

Step 1: Move 5x on the other side by subtracting it from both sides

y = 15 - 5x

2x + y = 12

Step 2: Move 2x on the other side by subtracting it from both sides

y = 12 - 2x

Since y = y, that means 15 - 5x = 12 - 2x

Step 3: Add 5x to both sides

15 = 12 + 3x

Step 4: Subtract 12 from both sides

3 = 3x

Step 5: Divide both sides by 3

x = 1

y = 12 - 2x

Step 6: Plug in 1 for x

y = 12 - 2(1)

Step 7: Multiply 2 by 1

y = 12 - 2

Step 8: Subtract 2 from 12

y = 10

Related Questions

click on photo for question.

Answers

Answer:

the last one

Step-by-step explanation:

when something asks for product it means multiplication

to get 2 times -5, you move first to -5 then to -10

You buy 4 breakfast sandwiches at $2.59 each, 4
hashbrowns at $1.10 each, and 4 bottles of orange
juice at $1.25 each. The sales tax is 6%. Find the
total cost of the 4 meals, including sales tax.

Answers

Answer:

all 4 meals equal $20.95

Step-by-step explanation:

4 sandwiches = $2.59 each

4 hashbrowns = $1.10 each

4 orange juice = $1.25 each

sales tax = 6%

now you have two options you could either add all of the one meal prices together or you could do how much it would cost for the each individually

adding one meal

2.59 + 1.10 + 1.25 = 4.94

4.94 x 4 = 19.76

adding all the items individually

2.59 x 4 = 10.36

1.10 x 4 = 4.40

1.25 x 4 = 5.00

10.36 + 4.40 + 5.00 = 19.76

now if the sales taxes

19.76 x 0.06 = 1.19

now sales taxes plus all the items

19.76 + 1.19 = 20.95

Amelia needs to buy some cat food. At the nearest store, two bags of cat food cost $7.50. How much would Amelia spend on three bags of cat food?

Answers

Answer:

♡Henlo friend~♡

2 bags of cat food is $5.50, multiply that by three and get six bags for $16.50♡

Therefore, the answer is $16.50.

Have a great day! ʕ •ᴥ•ʔ

~ Clara

✧･ﾟ: *✧･ *:･ﾟ✧*:･ﾟ✧･ﾟ: *✧･ﾟ *:･ﾟ✧*:･ﾟ✧✧･ﾟ: *✧･ *:･ﾟ✧*:･ﾟ✧･ﾟ: *✧･ﾟ

Step-by-step explanation:

Answer:

11.25

Step-by-step explanation:

hope this helps:)

Amber cut a 20-inch board into some shorter boards.
Each shorter board is 4 inches long.

Select the two models that represent the number of shorter boards Amber now has.

Answers

Answer:

24 im new im learning english sorry

Step-by-step explanation:

!PLEASE HELP ME!
write an equation of the line that passes through (7,10) and is perpendicular to the line y = 1/2x - 9

(Please explain how to do it as well bc I have three other questions similar to this and im so confused. This is for math hw btw.)

Answers

Ok I think it b that’s what I think if it’s not that try C

(7th grade math)
20% of what number is 30?

Answers

Answer:

150

Step-by-step explanation:

The scale on a map is 3 inches = 40 miles. How far apart are two cities if the distance between them on the map is 6¾ inches?

Answers

Answer:

90 miles

Step-by-step explanation:

.............

Clayton invested $360.00 in a bank for 3 years at 8% simple
interest each year. At the end of the 3 years, the total amount
he will receive is:
A. $236.80
B. $446.40
C. $86.40
D. $28.80

Answers

Correct answer:  B. $446.40

explanation: I took the quiz.

I hope this helps<3

The total amount Clayton will receive after 3 years is $446.40. Therefore, option B is the correct answer.

Given that, principal = $360.00, time period = 3 years and rate of interest = 8%.

What is the simple interest?

Simple interest is a method to calculate the amount of interest charged on a sum at a given rate and for a given period of time.

Simple interest is calculated with the following formula: S.I. = (P × R × T)/100, where P = Principal, R = Rate of Interest in % per annum, and T = Time, usually calculated as the number of years.

Now, simple interest = (360×8×3)/100

= 8640/100

= 86.40

Total amount = 360+86.40

= $446.40

The total amount Clayton will receive after 3 years is $446.40. Therefore, option B is the correct answer.

To learn more about the simple interest visit:

https://brainly.com/question/25845758.

#SPJ2

Find the rate of change of the line below. I​

Answers

Answer:

-1/4

Step-by-step explanation:

Shing estimates that it takes him 4/5 hour to mow a yard. Which is the best estimate of the Number of yards he can mow in 4 1/4 hours?

Answers

Answer:

its 6

Step-by-step explanation:

it will help you cuz i did it right

anyone know of some good books to read?

Answers

Red Queen, Throne of glass, Scythe, and I am number four! Those are some of my favorites!
You should read the diary of Anne Frank

what is 47,683 of 2,000,000,000 in percentage form

Answers

Answer:

0.00238415%

I hope this helps!

9. Ian and his friends are renting a cabin that
charges an initial fee plus a rate per night. The
relationship between the cost and the number of
nights is shown in the graph.

Answers

Answer:

taken from another post

Step-by-step explanation:

Answer:

Cost per night: 75

Equation:

Step-by-step explanation:

An equation to represent the situation can be written in the slope-intercept form, , where,

m = slope of the graph, which is the rate per night.

b = y-intercept, which is the initial fee. It is the point where the line intercepts the y-axis.

Let's find m, using two points on the line, (2, 200) and (4, 350)

✅The cost per night = 75

y-intercept, b, = 50. The line intercepts the y-axis at y = 50, when x = 0.

Substitute m = 75, and b = 50 into .

✅The equation would be:

Elizabeth is organizing dessert plates with 15 brownies and 9 chocolate chip cookies. If she wants all the plates to be exactly the same with no brownies or cookies left over, what is the greatest number of dessert plates that Elizabeth can make?

Answers

Answer:

8 plates

Step-by-step explanation:

The reason for this is because 15 and 9 are both divisible by 3. 15 divided by 3 is 5 and 9 divided by 3 is 3. 5+3= 8. Therefore, you will need 8 plates.

Y=2x-7 2x+y=5 solve the system

Answers

Make it 2x-y=7, 2x+y=5, now do elimination. -2y=2, y=-1.
Plug in -1 for y and solve for x
2x+1=7, x=3
Final answer: x=3, y=-1

Answer:

x=3 y=-1

Step-by-step explanation:

y=2x-7

2x+y=5

___________________

2x+2x-7=5

4x-7=5

4x=12

x=3

___________________

2(3)-7=y

6-7=y

-1=y

Evaluate: 2-4 =
help please

Answers

Answer:

-2

Step-by-step explanation:

Answer:

-2 I'm pretty sure since you subtract 2 from four.

Step-by-step explanation:

a rare coin is currently worth $450 The value of the coin increases 4% each year Detemine the value of the coin after 7 years.​

Answers

Answer:

576

Step-by-step explanation:

450 x 0.04 (0.04 meaning 4%) is 18, then 18 x 7 by the number of years listed, thats 126, then 450 + 126 = 576, by 7 years it would be worth 576, went up by 28%.

How many square roots dose the number 20 have

Answers

Answer:

The awnser is 4.472135955

How would you find the value for f(-) if you are given a graph of f(x)?

Answers

Answer:

Step-by-step explanation:

multiply x as a negative.

Example:

f(x) = 3x + 1

f(-x) = -1(3x) + 1

f(-x) = -3x + 1

pls help me with my most recent question thats not this one

Answers

Answer:

what's our recent question my guy

Leo has a bag of dimes and quarters. He has a total of 29 coins worth $4.70. Let x represent the number of dimes and y represent the number of quarters. Which system of equations would be used to find out how many dimes and quarters Leo has?

{x+y=290.1x+0.25y=4.7

{y=x+29x+y=4.7

{x=29−yx+y=4.7

{x+y=4.70.1x+0.25y=29

(60 points)

Answers

Answer:

x+y=29

0.1x+0.25y=4.7

Step-by-step explanation:

- x+y=29 (x is the number of dimes and y is the number of quarters. there is a total of 29 coins)

- Each dime is $0.1 and each quarter is $0.25.

- By multiplying the number of dimes by $0.1 and multiplying the number of quarters by $0.25, you will get the total amount of money, which is $4.7. - - Therefore, the answer is:

x+y=29

0.1x+0.25y=4.7

Hope this helps! :) I also took the K12 quiz, here is proof that this is right:

4 2/5 + k = −3 2/11 plz solve brainlest to the correct answer

Answers

Answer:

k= -118/55 = -2.135

Answer:

K=-7 32/55

Step-by-step explanation:

4 2/4 + k = -3 2/11

22/5 + k = -3 2/11

22/5 + k = -25/11

subtract 22/5 from both sides

22/5 + k - 22/5 = -35/11 - 22/5

k = - 417/55

simplified u get

k = -7 32/55

hope this helps

5)
On the map of a town, 1 cm represents 6 miles. Find the distance represented by 4.5 cm.
A)
4.5 miles
B)
6 miles
09
17 miles
D)
27 miles

Answers

27 miles represents the distance.

Can someone please help me out with this math work.

Answers

Answer:

B =  80

C = 80

D = 100

E = 100

F = 80

H = 100

J = 66

K = 112

L = 112

M = 66

O = 112

P = 112

Q = 66



What is the slope of the line?

Answers

Answer:

The slope is 0.5 or (1/2)

Step-by-step explanation:

Find the rise over run.

from -3 to -1 and 2 to 3 rises 1 runs 2 so then you divide 1/2 and get 0.5.

x/2 + x/5 = 1 solve for x​

Answers

Answer:

answer is 10/7

Step-by-step explanation:

x = 10 over 7 , 10/7

which of the following pairs of functions are inverses of each other​

Answers

Answer:

c would be the answer you are looking for and please mark brainliest

Step-by-step explanation:

Options A and D have functions that are inverses of each other.

What is an inverse function?

The inverse function is defined as a function obtained by reversing the given function.

To check whether two functions are inverses of each other, we need to check if the composition of the functions in both orders results in the input value.

Here, we need to check if f(g(x))=x and g(f(x))=x for all values of x in their domains.

A. f(x) = 7/(x-9) and g(x) = (x+9)/7

f(g(x)) = f((x+9)/7) = 7/((x+9)/7 - 9) = 7/(x/7) = x, so f and g are inverses of each other.

B. f(x) = x/6 + 8 and g(x) = 6x - 8

f(g(x)) = f(6x-8) = (6x-8)/6 + 8 = x/6 + 8/6 = x/6 + 4/3, which is not equal to x. Therefore, f and g are not inverses of each other.

C. f(x) = 2 + ∛x and g(x) = 2 - x³

f(g(x)) = f(2 - x³) = 2 + ∛(2 - x³) ≠ x, so f and g are not inverses of each other.

D. f(x) = 5x - 11 and g(x) = (x+11)/5

f(g(x)) = f((x+11)/5) = 5((x+11)/5) - 11 = x, and g(f(x)) = g(5x-11) = (5x-11+11)/5 = x/5, so f and g are inverses of each other.

Therefore, only options A and D have functions that are inverses of each other.

Learn more about inverse functions here:

brainly.com/question/2541698

#SPJ7

The scale on a map is 1: 20 000.
(a) Calculate the actual distance between two points which are 2.7 cm apart on the map.
Give your answer in kilometres.

Answers

Answer:

0.54kilometres

Step-by-step explanation:

a)actual distance =2.7*20000

                            =54000cm

                             =0.54kilometres

-3/4f = 5/4 what does f =​

Answers

Answer:f = -5/3
I double checked online this should be correct

Answer:

-5/3

Step-by-step explanation:

Multiply the -3/4 by the 5/4, cancel out the -3/4 on the side with f, and you'll have f = -5/3

Of the students in sixth grade, 3/5 pack their lunch. What percent of students pack their lunch?

Answers

Answer:

60 '/.

Step-by-step explanation: 3/5 is 6/10 and 6/10 is 60'/.

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