Y=x-15 y=-4x slove the sytem by subsitution.If there is one solution,express it as an order pair. no solution,infintie number of solution, if there is a solution explain it in () form

Answers

Answer 1

Answer:

(3,-12)

x = 3, y = -12

Step-by-step explanation:

(1) y=x-15

(2) y=-4x

solve equation (1) for x:

add 15 to both sides

x=y+15

plug in x=y+15 into equation (2):

y=-4(y+15)

y=-4y - 60

5y = -60

y = -12

plug in y=-12 into equation (2):

-12 = -4x

3 = x


Related Questions

3(-4+4)+5n=2n what are the steps for finding n

Answers

Answer:

1. Move the variables to one side: 3(-4+4) = -3n

2. Distribute. You will end up with 0 = -3n

3. Divide both sides by -3. n = 0

Step-by-step explanation:

Answer:

n=0

Step-by-step explanation:

3(-4+4)+5n=2n

first distribute

-12+12+5n=2n

combine like terms

5n=2n

subtract 2n on both sides

3n=0

divide by 3 on both sides

n=0/3

which is also equal to

n=0

Melissa earns $180 a week selling shoes plus a commission of $10 each pair of shoes she sells. How
many pairs of shoes must she sell to make a minimum of $500 a week?

Answers

Step-by-step explanation:

10X+ 180= 500

10X= 500-180

10X= 320. .....divine both sides by 10 to solve for X

X = 32.

check

10(32)+180 = 500

320+180 =500

500 =500...confirmed

What’s the answer for this one??

Answers

Answer:

It is the second one.

Step-by-step explanation:

a and e are equal because they are mirrored. d and b are equal because they are on the same  line and at the same point where the parallel lines go through. b and f are also mirrored. That leaves c and e which don't match.

Ms. Meyer washed
2/7
of her laundry. Her son washed
1/4
of it. Who washed most of the laundry? How much of the laundry still needs to be washed?
Solve this on paper. Then check your work on Zearn.
write your answer as a fraction ill mark you !

Answers

Answer:

15/28 loads of laundry needs to be washed.

Step-by-step explanation:

2/7 + 1/4

=  

2 × 4 + 1 × 7

7 × 4 + 4 × 7

=  

8/28 + 7/28

=  

8 + 7/ 28

=  

15/28

What is 5 / 1? Explain.

(Just trying to give away easy points haha)

Answers

Answer:

5/1 = 5

Step-by-step explanation:

because 5/1 equals 5.

A skier is trying to decide wether or not to buy a season ski pass. A daily pass costs $79. A season ski pass costs $400. The skier would have to rent skies with either pass for $30 per day. How many days would the skier have to go skiing in order to make the season pass less expensive than the daily passes?

Answers

Answer:

4 days

Step-by-step explanation:

79 + 30 = $109

109 x 4 = $436

Anyone help? I’ll give brainliest

Answers

Answer:

3^4-1

3^3 = 27

Answer:

-7n is the answer

Step-by-step explanation:

It's easy.

A 34 foot flag pole is casting a shadow that is 17 feet long. How far is the top of the flag pole from the the end of the shadow?

Answers

Answer:

17*square root of 5

Step-by-step explanation:

Form a triangle like the one shown  below and use the pythagorean theorem:

[tex]17^2+34^2=c^2\\289+1156=c^2\\1445 = c^2\\c = \sqrt{1445} \\c = 17\sqrt{5}[/tex]

solve for x...................................................................................

Answers

Answer:

x = 36°

Step-by-step explanation:

x + 20° + 4x = 200° { exterior angle of a triangle is equal to the sum of two opposite interior angles }

5x = 200° - 20°

5x = 180°

x = 180° / 5

x = 36°

Hope it will help :)

Can someone please help me? 3t + 7 = -8

Answers

Answer:

Step-by-step explanation:

Look at 3%2At%2B7=%28+-8+%29.

Moved these terms to the left  %28 +8+ %29

It becomes 3%2At%2B7%2B _green%28+8+%29=0.

Look at 3%2At%2B_red%28+7+%29%2_red%28+8+%29=0.

Added fractions or integers together

It becomes 3%2At% 2B % 28+15+%29=0.

Look at highlight_red%28+3%2At%2B15+%29=0.

Solved linear equation %28+3%2At%2B15=0+%29 equivalent to 3*t+15 =0

It becomes highlight_green%28+0+%29=0.

Result: 0=0

This is an equation! Solutions: t=-5.

Answer: t= -1/3

Step-by-step explanation:

3t+7=-8

subtract 7 from 7 and 8 (this cancels out the 7)

left with 3t = -1

divide 3 into 3t and -1

the 3 in 3t is canceled out, leaving us with t, therefore t= -1/3

Annual sales for a fast food restaurant are $650,000 and are increasing at a rate of 4% per year. What is the annual sales after 7 years?

Answers

Answer:

Around $855,355.66

Step-by-step explanation:

In these type of problems, you'd use the following equation

[tex]Initial Value * (percentage)^{x}[/tex]

Since the revenue's increasing by 4% every year, you'd plug 104/100 in the percentage box. X is the ammount of times the percentage is applied, so it would be 7, since we're finding the sales after 7 years. Finally, 650000 goes into the initial value and yeah. After calculating, you'll get around $855,355.66

Peter makes a base monthly salary of $2,500. As a vendor, he must sell $15,000 worth of items per month. He also makes an 18% commission on all sales beyond the monthly quota. If Peter sold $24,600 worth of items this month, what is his total salary for the month including base salary and commission to the nearest dollar?

Answers

Answer:

Monthly salary= $4,228

Step-by-step explanation:

Giving the following information:

Fixed salary= $2,500

Sales commission= 10%

Sales= $24,600

To calculate the monthly salary, we need to use the following formula:

Monthly salary= fixed income + commission

Commission= (24,600 - 15,000)*0.18

Commission= $1,728

Monthly salary= 2,500 + 1,728

Monthly salary= $4,228

If cos θ > 0, which quadrant(s) could the terminal side of θ lie?

Answers

Answer:

I and IV

Step-by-step explanation:

cosine is positive/greater than 0 in quadrants I and IV. Its just a rule of the unit circle.

Can remember by All Star Trig Class

meaning all the trig funtions are positive in quadrant I

sin is positive in II

tan is positive in III

and cos is positive in IV

Please help! Will mark brainliest if correct! Use the model attached to answer

Answers

Answer:

4 cubes will be shown in the right view of the model and the 1st option is the top view for the model.

A and b I think I hope


What is the value of -2(x + 5)?​

Answers

Answer:

-2x-10

Step-by-step explanation:

hope it hhhhheeeeeellllpppp you

what is 30+11x-12-6x

Answers

11x-6x=5x
30-12=18
5x+18
Answer: 18+5x

Collect like terms:


11x-6x=5x

30-12=18

It is a polynomial

Which expression is the result of factoring the expression below by taking out its greatest common factor?
8x2 – 24 = ?

Answers

Answer:

Step-by-step explanation:

You need to give us the choices. However, I will try and give you the answer.

The highest common factor is 8

8(x^2 - 3)     This is the answer I think the question expects.

8(x - √3 )(x + √3)  this is also possible

calculate 97% of 345m

Answers

Answer:

334.65 meters

Step-by-step explanation:

Solution for What is 97 percent of 345:

97 percent *345 =

(97:100)*345 =

(97*345):100 =

33465:100 = 334.65

Now we have: 97 percent of 345 = 334.65

Answer:

334.65

Step-by-step explanation:

100%-> 345

97%->345÷100×97

      = 334.65

Write an explicit formula for the nth term of this sequence:

6, 11, 16, 21, . . .

1. an=5n+11

2. an=5n+1

3. an=21-5n

4. an=6n+1

Answers

Answer:

2)an = 5n + 1

Step-by-step explanation:

This is an arithmetic series.

6 , 11 , 16, 21 ,.....

First term = [tex]a_{1}[/tex] = 6

Common difference = d = second term - first term

                                = 11 - 6 = 5

nth term = [tex]a_{1}+(n-1)*d[/tex]

             = 6 + (n - 1) * 5

            =  6 + n * 5 - 1*5

            = 6 +5n - 5

           = 6 - 5 + 5n

           = 1 + 5n

40 points and brainliest! Please explain your answer!!!

Answers

Answer:

give the other person brainliest

Step-by-step explanation:

the answer is B. 62°

the correct answer to the question is the answer is B. 62°

Please help me solve this and the first person to answer gets liked and also gets 5 stars.
(THE ANSWER MUST BE CORRECT)

Answers

Answer: p=31

Step-by-step explanation:

(x^13)(x^6)^3=

(x^13)x^18=

x^31

-30÷5=
bunun cevabı 6 mı??​

Answers

Answer:

-6

Step-by-step explanation:

-30÷5=-6

this is the ans

Please help! 15 points! need ASAP
Multiple choice, solve for y using the addition method

5x + y = 6

5x + 3y = -4

-1
1/2
1
-5

Answers

Answer:

-5

Step-by-step explanation:

Julie has 10 yards of ribbon.She divides the ribbon into 3 equal parts and uses 2 of the pieces on gifts.How much ribbon does she use ? Solve this problem any way you choose.

Answers

Answer: 6 2/3

Step-by-step explanation:

Julie has 10 yards of ribbon.She divides the ribbon into 3 equal parts. This means that each ribbon will be:

= 10/3

= 3 1/3

She then uses 2 of the pieces on gifts. The amount of ribbon that she use will be:

= 3 1/3 × 2

= 10/3 × 2

= 20/3

= 6 2/3

Answer:

The answer 60

Step-by-step explanation:

10*3*2

Enter a formula using k to connect the two variables.
F is proportional to a.​

Answers

fa
it does depend on how you want it to be set out though
If it’s directly proportional it’s = F=KA
If it’s inversely proportional it’s F=K/A

6. Ed bought a coat that usually costs $150. He purchased the coat at a 20% DISCOUNT. How much did Ed
pay for the coat?
a) $170
b) $30 c) $120
d)$100
7. The Wheeler's bill at the restaurant was $43.00. How much money should Mr. Wheeler leave as a tip if he
plans to tip 15%?

Answers

Answer:

6. c. 120

7. $6.45

Step-by-step explanation:

1. 150 x 0.20 = 30

2. 150- 30= 120

1. 43 x 0.15= 6.45

$325 is borrowed from a bank that charges 4% interest compounded annually. How much is owed after 1 year, 3
years, 7 years, and 20 years?

Answers

Answer:

338

365.58

427.68

712.12

Step-by-step explanation:

for annually compounding interest

PV(1+i)^n

for one year

325(1.04)

338

for 3 years

325(1.04)^3

365.58

For 7 years

325(1.04)^7

427.68

for 20 years

325(1.04)^20

712.12

Solve: (x – 3)(x – 5) = 35

(hint: first you must distribute; then set your equation equal to zero, then factor, then solve.


Posting again because no one answered correctly

Please help

Answers

Answer:

x=10, x=-2

Step-by-step explanation:

x^2-5x-3x+15=35

x^2-8x-20=0

Multiply to -20, add to -8: -10, 2

(x-10)(x+2)=0

x=10, x=-2

Answer:

x = −2 or x = 10

Step-by-step explanation:

(x - 3)(x - 5) = 35

x^2 − 8x + 15 = 35

x^2 − 8x + 15 − 35 = 35 − 35

x^2 − 8x − 20 = 0

(x+2)(x−10) = 0

x + 2 = 0 or x − 10 = 0

x = −2 or x = 10

I hope this helps! May I please have brainliest? :)

determine the slope and y-intercept from following the equation: y= 3/2x + 3

Answers

Answer:

Slope is 3/2 and y-intercept is +3

Step-by-step explanation:

slope = m

y intercept = b

Slope is 3/2 and y-intercept is +3

3f^4g^3 x 8fg^4 / (6f^2g^3)^2 how do you do this? I know the answer is 2/3fg but how do you get 0.666... into that fraction form?

Answers

9514 1404 393

Answer:

  0.666... = 6/9 = 2/3

Step-by-step explanation:

The repeating decimal 0.666... can be turned to a fraction as follows.

Let x represent the value of the number. Then 10x is ...

  10x = 10(0.666...) = 6.666...

Subtracting x gives ...

  10x -x = 6.666... - 0.666... = 6.000...

  9x = 6

Dividing by 9 and simplifying, we have ...

  x = 6/9 = 2/3

__

It can be worthwhile to remember that  1/9 = 0.111... repeating.

Then 3/9 = 1/3 = 3(0.111...) = 0.333... repeating

and 6/9 = 2/3 = 6(0.111...) = 0.666... repeating

Most calculators will round the last digit of 2/3 so that it is a 7. So, you may see ...

  2 ÷ 3 = 0.6666667 or 0.66666666667

or something similar, depending on your calculator. It is up to you to recognize this as probably a representation of 2/3. Some calculators will display the number as a fraction, so you don't have to guess.

_____

Additional comment

A similar method is used to convert repeating decimals of other lengths to fractions. In general you multiply by 10^n, where n is the number of repeating digits. Then proceed as above: subtract x, divide by the coefficient of x. You will find you are always dividing by a number that has as many 9's as there are repeating digits.

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