4x+15y=17,-x+5y=-13
Solve with substitution and please show steps.

Answers

Answer 1

Step-by-step explanation:

4x + 15y = 17

15y = 17 - 4x

y = (17 - 4x)/15

-x + 5y = -13

-x + 5(17 - 4x)/15 = -13

-x + (17 - 4x)/3 = -13

-x - 4x/3 = -13 - 17/3

-7x/3 = -56/3

7x = 56

x = 56/7

x = 8

y = (17 - 4x)/15

y = (17 - 4.8)/15

y = (17 - 32)/15

y = -15/15

y = -1


Related Questions

solve for a
•A=125
•A=37
•A=55

Answers

Answer:

37 degrees

Step-by-step explanation:

Answer:

A=37

Step-by-step explanation:

47 students go on a field trip.The students are divided into 6 groups of 6 students.How many groups of 6 students .

Answers

Answer:

7 groups of 6 students

Step-by-step explanation:

How many groups of 6 can fit inside 47 without going over 47?

47÷6= 7, remainder 5

You would have 7 groups of 6, and 5 people left over.

1.) I'm trying to see if I got this answer right. If not, correct me.​

Answers

Step-by-step explanation:

The constant of proportionality (or constant of variation), denoted by "k," represents the constant proportion or ratio that exists between two variables, y and x, such that y = kx.  

The given problem asks for you to identify the constant of proportionality and what it represents in context of the problem.

In the equation, y = 4.75x:

y = total cost in dollars earned

x = number of bracelets

The constant of proportionality, k = 4.75, represents the increase in total cost earned for every x number of bracelets sold.  In other words, the total increases by 4.75 for every bracelet sold.  

Thus, since Liv made x = 2 bracelets, then her total cost will equal to $9.50 because:

y = 4.75x

y = 4.75(2)

y = 9.50

What is 1,234.7(578)/345

Answers

it should be

2068.56985507

Answer:

2068.56985507

Step-by-step explanation:

1234.7 x 578 =  713656.6

713656.6/345 = 2068.56985507

Have a great day!

hello i really need help pls ASAP​

Answers

Answer:

1. D

2. A

3. picture isn’t clear

4. B

5. C

Step-by-step explanation:

2. Anything to the power of 0 is = 1

1^-1 = 1/1 = 1

real answer : study hard

How can you multiply a letter

Answers

Answer:you can multiple a letter only by its self not other letters so you can do x times x which is 2x but you can’t do x times y.

Step-by-step explanation:

Find the next two terms. 2, 10, 50, ?, ?

Answers

Hi there!

The next 2 terms are 250 and 1,250.

We have a geometric sequence, which means we use multiplication or division to get to the next term.

Here, we multiply by 5 to get to the next term.

So we multiply 50 by 5:

50*5=250

We multiply 250 by 5 to get to the next term:

250*5=1,250

And we're done!

Therefore, the next two terms are: 250 and 1,250.

Hope this helps!

~Just a felicitous girlie

#HaveASplendidDay

[tex]SilentNature :)[/tex]

Answer:

250, 1250

Step-by-step explanation:

This is a geometric sequence since there is a common ratio between each term. In this case, multiplying the previous term in the sequence by 5 gives the next term.

Hope that helps!

A car is traveling is at a speed of 99 km/h. what is the car speed in kilometers per minute how many kilometers for the car travel in 2 minutes do not round your answers.

Answers

Answer:

1.65 kilometers a minute and you would travel 3.3 kilometers in two minuets

Step-by-step explanation:

Im pretty sure that is the answer because 99/60 = 1.65 and 1.65 * 2 = 3.3

What is the cost to get into a Green Cab?

Answers

Answer:

  $5

Step-by-step explanation:

The graph shows the green cab costs $5 even if you don't go anywhere (miles = 0).

The cost to get into a green cab is $5.

Answer:

15

Step-by-step explanation:

because it's the where the green lines cross the graph.

Please help me with this question?

Answers

Answer:

x + 1/2

Step-by-step explanation:

1/2 x + 3/4  + 1/2 x - 1/4

= 1/2 x + 1/2 x + 3/4 - 1/4

= 2/2 x + 2/4

= x + 1/2

Derek uses 8 gallons of gas to drive 160 miles on the highway. If he gets that same gas mileage, how many miles can he drive on 1 gallon of gas?

Answers

Answer:

20 miles

Step-by-step explanation:

160÷8=20

20 miles for 1 gallon

Select Correct or Incorrect for each equation.


Equation


−1−1=−1 Correct Incorrect

−1+1−1=−1 Correct Incorrect

Answers

Answer:

-1-1=-1 is incorrect.

-1+1-1=-1 is correct.

Step-by-step explanation:

Add them all up and if they do not equal what is on the other side of the equal sign, then it is incorrect. If it does add up to what is on the other side of the equal sign, then it is correct.

someone please help, how many do i split the shape into.

Answers

Answer:

The sum is 1260°.

Step-by-step explanation:

Describe the Function
f(x) = 3x² + 2

Answers


f(x) = 3x² + 2

3x² + 2 = 0

3x² = -2

3² + 2 = -2/3

F (-2/3) = 3 (-2/3) cross out the three + 2

= -2 + 2 = 0

Hope this helps a bit...

isabel is buying 6 anglefish, and she wants her total cost to be no more than 2$ above or below 36$. what inequalty models the cost in Dollers of an angle fish

Answers

Answer:

c<2$

c>36$

Step-by-step explanation:

._.

(b) Expand and simplify (2r + 5)(x-6)(3x + 3)

Answers

Answer:  Answers below

Step-by-step explanation:

The step by step answer is below, enjoy.

i need the equations for these tables ​

Answers

Step-by-step explanation:

Take a graph and plot your points.

For example in A, your first point is at (-2,0).

Draw a line thru the points and then figure out the slope and the y-int

Hope that helps

Enter an algebraic expression for the word expression. 15 decreased by n ​

Answers

15-n

15

decreased by is - (subtraction symbol)

n

helppppp....
..A teacher is buying T-shirts for her algebra class.


- Long-sleeve T-shirts (x) cost $16 each.
- Short-sleeve T-shirts (y) cost $10 each.

The teacher wants to buy at least 24 T-shirts, and she wants to spend no more than $300 in all. Which system of inequalities represents this situation?

Answers

Answer:

[tex]240\leq 10x+16y\leq 300[/tex]

Step-by-step explanation:

Let short-sleeve be x and long-sleeve be y

So, the least amount she could spend buying at least 24 shirts is $240 because the cheapest shirt is $10/shirt. The max amount is already given.

[tex]240\leq 10x+16y\leq 300[/tex]

HELP ME ASAPPOOPOOOO

Answers

Answer:

a

Step-by-step explanation:

To rent a moving truck for the day it cost $33 +1 dollar for each mile driven.

Answers

Answer:

A) y=x+33 or 33+m (m = miles)

B)$333

Step-by-step explanation:

A is, y = the total cost, x = miles driven , 33 = cost for the day you rent it

B is, $1x$300 = $300 + $33 (base cost) = $333

Write an expression for the cost to rent the truck.

33 + x = y

You rive the truck 300 miles. How much do you pay?

33: initial rent fee

300: miles

One mile equals one dollar so the answer would be.

33 + 300 = 333

Hope this helped!

8. Which symbol makes this number sentence true?
38.21 O 38.023

Answers

Answer:

>

Step-by-step explanation:

38.21 > 38.023
word answer: 38.21 is greater than 38.023

What is the measure of angle 1?
Please help

Answers

Answer:

125

Step-by-step explanation:

ahh help !!
im bad at math ;-;

Answers

Answer:

To be honest I think it is D

Step-by-step explanation:

Using the distributive property write an expression equivalent to -7(7-x)​

Answers

Answer:

-49+7x

Step-by-step explanation:

-7*7=-49

-7*-x=7x

Has to do with slopes please help

Answers

1. y=2x+3

2. y=-3/5x-6

3. y=1/4x+8

4. y=-x-6

5. y=2x+1

6. y=-x+5

7. y=-5/6x+4

8. y=1/4x-1

i will figure out the rest!

Answer:

Step-by-step explanation:

what is 4 whols and 4/5 divided by 4/5

Answers

Answer:

6

Step-by-step explanation:

24/5 / 4/5

24/5 / 5/4

24/4 is 6

5/5 is 1

hope this helps:)

6

I can run 5km in 30 minutes. How long would it take me to run 30km?

Answers

Answer:

3 hours

Step-by-step explanation:

5km = 30m

-------------------

         5

1km = 6m

*30  *30

30km = 180 m

30k = 3 hours

15 x (8 x 5) = (15 x 8) x 515 x blank = blank x 5blank = blank

Answers

Answer:

explain

Step-by-step explanation:

explain it better pls

The history museum charges a $20 fee plus S8 per student for a field trip. The aquarium charges a $50 fee plus $5 per student. The lines in the graph represent the cost of each field trip. For what number of students will the total cost of each field trip be the same, and what will that cost be? Field Trip Costs 120 110 100 90 80 70 y = 50 - 5x (s) jsou y = 20 + 8x 50 30 20 10 1 2 3 4 5 G 7 8 9 10 11 12 Number of students A. 110 students; $12 B. 12 students: $110 O c. 10 students; $100 *C O D. 100 students: $10​

Answers

Answer:

C

Step-by-step explanation:

took test

Answer: C!

Step-by-step explanation: if you look at where the lines intersect, it lands on 10 students and 100 dollars.

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