Mathematics College

Solve the system using the substitution method

x = -6y - 4
6x - 12y = 24

Answers

Answer 1

Answer:

x = 2, y = -1

Step-by-step explanation:

We have a solution system, x = -6y - 4 and 6x - 12y = 24.

Now, since are not only asked to use the substitution method, but at the same time know the value of x, let's plug the first system into the second.

x = -6y - 4

6(-6y - 4) - 12y = 24

-36y - 24 - 12y = 24

-48y - 24 = 24

Add 24 to both sides :

-48y = 48

Divide -48 by both sides :

y = -1

Now that we have y, we can replace it into the second system again to get x.

6x - 12(-1) = 24

6x + 12 = 24

Solve for x by first getting rid of 12 from both sides :

6x = 12

Divide 6 by both sides :

x = 2

Therefore, x = 2 and y = -1

Related Questions

Grace wants to participate in a dance recital. She cannot miss more than 15% of the 40 classes before the recital. What is the minimum number of classes Grace must go to in order to be in this recital?
(BUT DON'T SAY 6 I PUT IT AND IT WAS WRONG!)

Answers

Answer:

She has to attend 6 or more classes

Step-by-step explanation:

i need help due tonight

Answers

Answer:

s=6

Step-by-step explanation:

3(s+4)=30

multiply 3×s and 3×4

3s+12=30

-12=-12

3s=18

divide 18 and 3s

s=6

Answer:

s=6

Step-by-step explanation:

The distance around a lake is 8km on a map this distance around the lake is represented by 2 cm The on the map is what

Answers

Answer:

1 cm = 4 km.

Step-by-step explanation:

I think you want the scale of the map.

It is  1 cm = 8/2 = 4 km.


3
gina practica
3/4
de hora de aeróbicos y
hora de máquinas en el gimnasio; si ella va a
gimnasio solamente los domingos durante un mes, ¿cuántas horas dedica a ejercitarse?​

Answers

A pergunta não está bem formatada. No entanto, pelo que parece óbvio

Responda:

3 horas

Explicação passo a passo:

Fração de hora gasta por sessão = 3/4 horas por sessão

Se o exercício for feito apenas aos domingos

Número de domingos por mês = 4

Portanto, número de sessões = 4

Fração de horas por sessão * Número de sessões

3/4 * 4 = 3 horas

Portanto, 3 horas são dedicadas ao exercício por mês

Anyone know this answer

Answers

All of them BUT
YZ and XZ

A subway car travels at a rate of 32 meters per second. How far does it travel in 16 seconds? Use d= r x t

Answers

Answer:

I think 512 feet in 16 seconds.

You apply the
{Select)
operation
[ Select ]
-for multiplication equations and
[ Select ]
for division equations
-to
[ Select ]
of the equation.

Answers

Answer:

ndhduejcijgisjcidjcjzjfjidjicjdici djcojzifcjdjcu

Step-by-step explanation:

no se weydgfds

4x + 10 > 54 how do I solve this

Answers

Answer:

4x + 10 >54

-10. -10

4x> 44

/4. /4

x= 11

4(11) +10 >54

44+10.>54

54>54

the answer is false since they're both equal

What is the decimal multiplier to decrease by 0.4%

Answers

Answer:

.004

Step-by-step explanation:

translate the percent to a decimal

Answer:

0.996

Step-by-step explanation:

for a decrease u need to transfere to a decimal then take it away from 1

9 - 8k = 105? Please help me

Answers

Answer:

k is equal to -12

Step-by-step explanation:

9-8k=105

minus 9 from both sides of the equations:

-8k=96

divide both sides by -8:

k=-12

0.06 divided by 0.6 what is it

Answers

Answer:

0.1

Step-by-step explanation:

Answer:

0.1

Step-by-step explanation:

0.06 divided by 0.60 = 0.1

· y = 3x - 7
Find the slope

Answers

Answer:

3

Step-by-step explanation:

the slope of an equation (y=mx+b) is always "m", or the coefficient right infront of x. in this case, y=3x-7, 3=m, -7=b. m is the slope, so the slope is 3.

the correct answer is 3 because is the right slope

What is the total cost for x months?

Answers

is there a picture i can see so i can answer the question?

helppppp!!!!!!!!!!!plz

Answers

Answer:

the answer is point A it's the first one point A

Answer: One of your answers are right. (B and A)

Step-by-step explanation: The opposite of positive 2 will be negative 2, and -2 is at Point A.

B. What is the largest whole number to the left of 3.52?​

Answers

Answer:

3

Step-by-step explanation:

<---------1-----------2---------3----3.52----4----->

Solve for n:
3n + 2n - 17 = 38

Answers

Get all the n together so 3n+2n=5n
5n-17=38
Minus 17 from both sides
5n= 55
N= 11
first you +17 to both sides to get 3n+2n=55
then you do 3n+2n= 5n
so you have 5n=55
so then n=11

Need Help please,
Which graph is generated by this table of values?

Answers

Answer:

y=3x-6

Step-by-step explanation:

use 2 of the points for y=a×x+b

we use (2,0) and (3,3) as an example

we get

0=2a+b & 3=3a+b

so

3-0=3a+b-(2a+b)

3=a

b=-6

Rewrite the fraction in the sentence below as a percentage. From 100 yards away, a marksman hits 13/20 of the yard last year

Answers

The answer is 65 percent

plzzzzzzzz tell fast​

Answers

It would be 7xu/ becaus

Maria earned a score of 80% on her math test. Each question on the quiz was worth 1 point, and Maria got 12 questions correct. How many questions were on the quiz?

Answers

Answer:

15 questions were on the quiz

Step-by-step explanation:

12/15 = .80 = 80%

Answer:

68?

Step-by-step explanation:

HELPPPPPPPPPPPPPPPPPPPPPPPPPPPPP PLEASEEEEEEEEEEEEEEEEEEEEEEEEEEEE BRAINLIEST TO RIGHT ANSWER FIND X

Answers

9514 1404 393

Answer:

  x = 19

Step-by-step explanation:

Corresponding sides are proportional.

  full length/right segment = 36/20 = (x+5+30)/30

Multiplying by 30 gives ...

  54 = x +35

  19 = x . . . . . . . subtract 35

Please help me to complete the impact on equity

Please answer

Answers

Answer:

Equity is same as equility it is for making students fools.

Step-by-step explanation:

Equity=Equality

The sales tax in Whittle City is 7%, how much tax is charged on a purchase of $53?

Answers

Answer:

3.71$

Step-by-step explanation:

Answer:

$3.71 hope this helps

Step-by-step explanation:

PLS HELP ME!!! FIND X

Answers

There is no picture sir

Answer:

17.5

Step-by-step explanation:

Those angles are supplementary, in other words, they add up to 180°

To solve you set the expressions up to 180:

(5x - 30) + 7x = 180

12x - 30 = 180

12x = 210

x = 17.5

18.5−1.73 what is this??

Answers

The answer for this is 16.77

In AJKL, the measure of ZL=90°, LK = 12, KJ = 37, and JL = 35. What ratio
represents the secant of K?

Answers

Answer:

37/12

Step-by-step explanation:

sec A hyp/adj

For angle K, the adjacent leg is LK. JK is the hypotenuse.

sec K = hyp/adj

sec K = 37/12

Strands of copper wire from a manufacturer are analyzed for strength and conductivity. The results from 100 strands are as follows: Strength High Low High conductivity 74 8 Low conductivity 15 3 a. If a strand is randomly selected, what is the probability that its conductivity is high and its strength is high

Answers

Answer:

0.74

Step-by-step explanation:

Given :

__________________ STRENGTH __

__________________High _ Low

High conductivity _____ 74 __ 8

Low conductivity _____ 15 ___ 3

Probability that conductivity is high and strength is high :

This the probability of High conductivity n High strength = P(High conductivity n High strength)

Probability = required outcome / Total possible outcomes

Required outcome = P(High conductivity n High strength) = 74 (from table)

Total possible outcomes = total sample size = 100

Hence,

P(High conductivity n High strength) = 74 / 100 = 0.74

Evaluate the function rule below when x=-2

F(x)=1/4x

Answers

Answer:

= -1/2

Step-by-step explanation:

F=1/4(-2)

F=-1/4(2)

F=-1(2)/4

F=-2/4

F= -1/2

A pair of jeans is marked down at 25% off the original price. The original price of
the jeans was $68.50. What is the price of the jeans before sales tax?

Answers

Answer:

$51.38

Step-by-step explanation:

1 - .25 = .75

you're paying 75% of the price

68.50 • .75 = 51.375 ≈ $51.38

Determine the axis of symmetry of the Quadratic equation.
A. y=2
B. X=2
C. X=0
D. y=1

Answers

B/X=2
OWA OWA 20 minimum word

Answer:

option B : X=2

Step-by-step explanation:

Because the line U touches on X:2

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