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
jok3333 [9.3K]
3 years ago
14

Solve by elimination using subtraction. 2x + y = -5 2x - 5y = 13

Mathematics
2 answers:
spayn [35]3 years ago
5 0

Answer:

(- 1, - 3 )

Step-by-step explanation:

Given the 2 equations

2x + y = - 5 → (1)

2x - 5y = 13 → (2)

Subtracting (1) from (2) term by term will eliminate the x-0 term

0 - 5y - y = 13 - (- 5) , that is

- 6y = 18 ( divide both sides by - 6 )

y = - 3

Substitute y = - 3 into either of the 2 equations and solve for x

Substituting into (1)

2x - 3 = - 5 ( add 3 to both sides )

2x = - 2 ( divide both sides by 2 )

x = - 1

solution is (- 1, - 3 )

oee [108]3 years ago
4 0
Yes this is true he is right 3892018389392
You might be interested in
A line passes through point A(12,18). A second point on the line has an x-value that is 125% of the x-value of point A and a y-v
Reil [10]

Answer:

(y - 18) = -3/2 (x - 12)

Step-by-step explanation:

125% of 12 equals 15

75% of 18 equals 13 1/2

so the slope equals 4.5/-3 or -3/2

7 0
2 years ago
What times what is 15 but also adds up to a total of 8?
Anon25 [30]
Answer is 3 and 5
trial and error
4 0
3 years ago
Read 2 more answers
HELP ASAP!!!!!!!!!!!
kvasek [131]

Answer:

C

Step-by-step explanation:

the statement (y<1/2x -4) reads "y is LESS than 1/2 x -4."

to fulfil this statement, follow these steps.

1) graph the line 1/2x -4, there will be a yintercept at (0,-4). Also the slope will be increasing (left to right) because 1/2 has no negative sign before it.

2) recognize the inequality sign. In this situation, the solution does NOT INCLUDE THE LINE, rather it includes the area BELOW/LESS THAN the line. If this, < had a line under it, it would mean less than OR equal to.

3) know that if the line is not included, the line will be broken. If the line IS included, which it is not, it would be a solid line.

3 0
3 years ago
Read 2 more answers
Factor out the GCF: 9x - 36<br> please i need this before 8:00pm
charle [14.2K]

Answer:

gcf = 9

9(x - 4)

Step-by-step explanation:

6 0
3 years ago
Please help for my college homework!!!
Ber [7]

(11)10 = (1011)2

Step by step solution

Step 1: Divide (11)10 successively by 2 until the quotient is 0:

11/2 = 5, remainder is 1

5/2 = 2, remainder is 1

2/2 = 1, remainder is 0

1/2 = 0, remainder is 1

Step 2: Read from the bottom (MSB) to top (LSB) as 1011. This is the binary equivalent of decimal number 11 (Answer).

i hope it helpsssss

4 0
2 years ago
Other questions:
  • Which relation is a function
    8·1 answer
  • Answer and I will give you brainiliest <br>​
    7·2 answers
  • The magnitude of an earthquake is calculated using the Richter Scale, M=log I/io , where I0 is the threshold intensity and the i
    6·1 answer
  • If the average grade of an English class rose from 70 to 85, what is the approximate percent increase?
    6·1 answer
  • Multiply the following polynomials x, (x+3) and (2x-8)
    6·1 answer
  • One man is three times as old as another. Fifteen years ago the first was six times as old as the second. Find their ages now.
    15·1 answer
  • SOME BODY PLEEEASE HELP ME WITH THESE I need these completed by tonight PLLEEASEE7. Find the measures of the following to the
    10·1 answer
  • You rent an apartment that costs $1400 per month during the first year, but the rent
    10·1 answer
  • Find the quotient.<br><br> 85,544 ÷ 289
    10·1 answer
  • The slope in the linear equation y=12x+5 is _[blank]_.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!