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
poizon [28]
3 years ago
9

Solve by substitution 3x-4y=-4 y=2x-4

Mathematics
1 answer:
dybincka [34]3 years ago
7 0

Answer:

x=4 and y=4

Step-by-step explanation:

From first function we have:

3x - 4y =  - 4 \\ 4y = 3x  + 4

And from the second one:

y = 2x - 4 \\ 4y = 8x - 16

Substitute them:

4y = 3x + 4 \\ 4y = 8x - 16 \\  \\ 0 =  - 5x + 20 \\ x = 4 \\ y = 4

You might be interested in
If M <1 = 115 degrees what is m <2
SIZIF [17.4K]

Answer:

M<2= 65

Step-by-step explanation:

The reason it is 65 because 2 angles add up to either 90 or 180 and in this case it would be 180.

You would use angle addition postulate to find the answer so M<1 + M<2 = 180.

Since M<1 is 115 you would substitute it into the formula so 115 + M<2 = 180

Then you would subtract 115 from 180 in which you would get M<2 = 65

6 0
3 years ago
Explain how to find the deviation of an entry in a data set
Ilia_Sergeevich [38]
The answer is: Find the mean of the differences with the other numbers in the set<span>. Add the squared differences and then divide the total by the number of items in </span>data<span> in your </span>set; t<span>ake the square root of this mean of differences to </span>find<span> the standard </span>deviation.
3 0
3 years ago
(3x-7)+(-4x-8)........ what is the sum of this pls
yarga [219]

Answer:

(3x-7)+(-4x-8)

3x-7-4x-8

3x-4x-7-8

-x-15

6 0
3 years ago
4y-14=18. Hahahahahahahaahahaha
Setler [38]

Answer:

4y = 18+14

4y = 32

y = 32/4

y = 8

mark brainliest!

5 0
3 years ago
Read 2 more answers
The profit at a chocolate shop can be represented using the function f(x)=3x−95, where x is the number of chocolate truffles sol
xz_007 [3.2K]
The slope is the constant rate of change. In this case, the number is being multiplied by 3 each time

The slope is 3
“x represents number of chocolate truffles sold each day”
Represents amount of chocolate truffles sold per day
7 0
2 years ago
Other questions:
  • Hank brought a fish tank
    14·2 answers
  • How to divide 0.13 by 0.25
    5·1 answer
  • Roger is buying a new pair of shoes for 25% off. If the original price of the shoes was $70.00, how much money is Roger saving o
    6·1 answer
  • on Saturday, Hattie biked 3.2 hours at a speed of 12.5 miles per hour. on Sunday, she biked 2.5 hours at a speed of 14.3 miles p
    10·1 answer
  • HELP QUICK PLZ I AM STUCK!!!!!!!
    12·1 answer
  • A box is a rectangular prism with a width of 24 inches and a height of 18 1/2 inches. The volume of the box is 10,656 cubic inch
    7·1 answer
  • In the year 2000, the population of Mexico was about 100 million, and it's was growing by 1.53% per year. at this rate, the func
    13·1 answer
  • Critique Reasoning: A student says that the perimeter of a rectangle with side lengths (2x – 1) inches and 3x inches can be writ
    13·1 answer
  • You and your family go out for dinner the bill is $240.00. You have a coupon for 20% off. After the discount, you want to leave
    15·2 answers
  • Use this scenario: A truck rental agency offers two kinds of plans. Plan A charges
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!