1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
ladessa [460]
4 years ago
7

Solve, using the substitution method. 3x + 2y = 8 y = x – 6

Mathematics
1 answer:
Ket [755]4 years ago
8 0
3x+2y=8
y=x-6

3x+2 (x-6) =8

3x+2x -12 =8

+12 to both sides...
3x+2x = 20

3x+2x=5x

5x=20

divide both sides by 5

x=4!!!
y=-2
:)
You might be interested in
Oscar has a 200-page book to read. he reads 4 pages every 5 minutes. what is his reading rate
Andrei [34K]
48 pages per hour. The reason is because you would take 4/5 and get .8 pages per minuet so then it would be .8*60 to get 48. (You would multiply by 60 because 60 minuets in an hour.) So your answer would be 48 pages per hour
6 0
4 years ago
On a workday the average decibel level of a busy street is 69 db, with 139 cars passing a given point every minute. if the numbe
Vlad1618 [11]
Decibel is directly proportional to number of cars passing the point. That is,

69 db ----- 139 cars
x   db ----- 17 cars

x = number of cars passing the point per minute on a weekend.

Then,
x= (69*17)/139 = 8.43 db ≈ 8 db
8 0
4 years ago
In the year 2000 the population of Mexico was about 100 million, and it was growing by 1.53% per year. At this growth rate, the
andre [41]

Answer:

11 years

Step-by-step explanation:

Set the function f(x) = 100(1.0153)^x = to 118 and solve for x:

100(1.0153)^x = 118

Taking the natural logarithm of both sides, we get:

ln 100 + x ln 1.0153 = ln 118

Then x ln 1.0153 = ln 118 - ln 100, or

                           = 4.7707 - 4.6052

    ... which leads to:

                                4.7707 - 4.6052

                         x = ---------------------------   =  11 years (rounded up from 10.888 )

                                     0.0152

4 0
4 years ago
I really need help on this question offering 10 points if anybody could help me with this with proof I'd be very thankful ​
kozerog [31]

Answer:

n=15

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
Choose the equation that satisfies the data in the table.
KengaRu [80]

The equation that satisfies the data in the table is,

y = -4x - 4 [Option D]

Definition of an Equation:

An equation is defined as a mathematical assertion in which you use mathematical symbols to demonstrate the equality of two amounts. A combination of expressions with variables and constants on either side of the equality sign make up an equation.

The (x, y) coordinates from the given table are,

(-1,0), (0, -4), (1, -8)

Now, these points must satisfy the required equation.

Considering the first point (-1, 0), if we substitute these values of x and y coordinates in y=4x-4, the equality is no longer maintained.

Similarly, (-1,0) does not satisfy the second and third equations, that are, y = -x + 4 and y = x + 4, respectively, either.

Taking the fourth equation, y = -4x - 4

Putting x = -1 in this equation, we get,

y = -4(-1) - 4

y = 4 - 4

y = 0

Likewise, this equation satisfies the rest of the data in the table too.

Therefore, y = -4x - 4 is the required equation.

Learn more about an equation here:

brainly.com/question/10413253

#SPJ1

3 0
2 years ago
Other questions:
  • Help Me Find The Surface Area and look for the expression to round or closest to or exactly the same.
    11·1 answer
  • The solution set of IR - 31 = 10 is​
    11·1 answer
  • Plz Help With This Math Brainliest First Person
    13·1 answer
  • Question 6 (0.5 points)
    5·1 answer
  • Pls help How many sides does this regular polygon have? ​
    8·1 answer
  • g The altitude of a triangle is increasing at a rate 2 inch/hour while the area of the triangle is decreasing at a rate of 0.5 s
    12·1 answer
  • Which descriptions match the given transformations?<br><br> Drag and drop the answer into the boxes.
    15·1 answer
  • PLEASE HELP
    13·2 answers
  • What is 4 (3.05) = what dose it equal?
    5·1 answer
  • Simplify: ((-3)4)².
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!