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
Kaylis [27]
3 years ago
11

2x-3y=4 -4x+6y=-8. solve by elimination

Mathematics
2 answers:
lianna [129]3 years ago
5 0
  2x - 3y = 4   ⇒ -4x + 6y = -8
-4x + 6y = -8 ⇒ <u>-4x + 6y = -8</u>
                                   <u> 0y </u>=<u> 0</u>
                                    0      0
                                      y = 0
                           2x - 3(0) = 4
                               2x - 0 = 4
                              <u>      +0   +0</u>
                                    <u> 2x</u> = <u>4</u>
                                     2      2
                                      x = 2
                                (x, y) = (2, 0)
oksano4ka [1.4K]3 years ago
4 0
2x-3y=4 \\&#10;-4x+6y=-8 \ \ \ |\div 2 \\ \\&#10;2x-3y=4 \\&#10;\underline{-2x+3y=-4} \\&#10;2x-2x-3y+3y=4-4 \\&#10;0=0 \\ \\&#10;\boxed{\hbox{infinitely many solutions}}
You might be interested in
How to do this problem??
lorasvet [3.4K]
We know that the sum of the inner angles of any triangle is 180º

72º + (7x + 3)º + (3x + 5)º = 180º
72º + 7xº + 3º + 3xº + 5º = 180
7xº + 3xº = 180º - 72º - 3º - 5º
10xº = 100º
x^0 =  \frac{100^0}{10^0}
x^0 = 10\to\:\boxed{\boxed{x = 10^0}}\end{array}}\qquad\quad\checkmark

The sum of the external angle (9y + 1)º with inner angle (3x + 5) = 180 °, <span>Replace the measure of "x" found:
</span>
(9y + 1)º + (3x + 5)º = 180º
9yº + 1º + 3xº + 5º = 180º
9yº + 1º + 3.(10)º + 5º = 180º
9yº + 1º + 30º + 5º = 180º
9yº = 180º - 1º - 30º - 5º
9yº = 144º
y^0 =  \frac{144^0}{9^0}
y^0 = 16\to\:\boxed{\boxed{y = 16^0}}\end{array}}\qquad\quad\checkmark

Answer:
<span>The measures ​​of "x" and "y" are respectively: 10º and 16º</span>
6 0
3 years ago
A researcher wishes to conduct a study of the color preferences of new car buyers. Suppose that 50%50% of this population prefer
n200080 [17]

Answer:

0.1527

Step-by-step explanation:

Given that a researcher wishes to conduct a study of the color preferences of new car buyers.

Suppose that 50% of this population prefers the color red

15 buyers are randomly selected

Let X be the no of buyers who prefer red.

X has exactly two outcomes red or non red.

Also each buyer is independent of the other

Hence X is binomial with p = 0.5 and n = 15

Required prob =The probability that exactly three-fifths of the buyers would prefer red

= P(X=9)

= 15C9 (0.9)^9 (0.6)^6

=5005(0.0000305)=0.1527

6 0
3 years ago
ANSWER QUICK!!!<br><br> PLEASE INCLUDE WORKKKK
alexgriva [62]

Answer:

76

725

63

72

Step-by-step explanation:

700-7125 sksksksksks

7 0
3 years ago
a car traveling at 30 m/s starts to decelerate steadily. it comes to a complete stop in 12 seconds. what is its acceleration?
creativ13 [48]
Just divide -30 m/s (the change in velocity) by 12 seconds (the time required for the car to come to a stop):

-30 m/s
----------- = - 2,5 m / (sec)^2              (answer)
 12 sec
5 0
3 years ago
Why did Euler enter the Paris Academy of Sciences Prize Problem competition ?
anzhelika [568]
He wanted the mathematical challenge
6 0
3 years ago
Read 2 more answers
Other questions:
  • What’s the answer to this question
    6·1 answer
  • Kate sets a goal to walk 3 miles every day for a year. How many miles more or less than 1,000 miles will she walk in the year?
    14·2 answers
  • Lucy rented a movie. She started the movie at 9:40 p.m. and it was 3 hours 43 minutes long. When did the movie end
    7·2 answers
  • it cost $35 for one adult and two children to attend a show. It cost $60 for two adults and three children to attend the same sh
    9·1 answer
  • Please help me thank you I appreciate it
    6·2 answers
  • Math pls help???????
    11·2 answers
  • Algebra 2 Please Help
    10·1 answer
  • Eric drove 804 miles in 12 hours. At the same rate, how many miles would he drive in 8 hours?
    9·2 answers
  • If one real number is equal to a second real number, and the second real number is equal to a third real number, then the first
    6·1 answer
  • Eroy collected data on the number of hours that each staff member at Eroy's Electronics slept Thanksgiving night. Mary the Manag
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!