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
LenaWriter [7]
3 years ago
13

x + 3y = 7 x - 3y = 1 Solve the system of equations. A) x = 4, y = 1 B) x = 1, y = 4 C) x = - 2 3 , y = 3 D) x = 3, y = - 2 3

Mathematics
2 answers:
Alik [6]3 years ago
6 0
X+3y=7
x-3y=1
add them together

x+3y=7
<u>x-3y=1 +
</u>2x+0y=8

2x=8
divide 2
x=4
subsitute
x+3y=7
4+3y=7
subtract 4
3y=3
divid 3
y=1

x=4
y=1

answer is A
<u />
Bumek [7]3 years ago
6 0
X + 3y = 7 
<span>x - 3y = 1

x + 3y = 7
   - 3y    -3y

x = 7 - 3y

</span><span>x - 3y = 1
</span>7 - 3y - 3y = 1
7 -6y = 1
-7         -7

-6y = -6
y = 1

Now solve for x
<span>
X + 3y = 7
</span>x + 3 = 7
x = 4

Now we have our values:-
x = 4 and y = 1

Answer: <span>A) x = 4, y = 1</span>
You might be interested in
Expression related to -1/3(6x+15)-3
marshall27 [118]

Answer:

x = -4 and -2x - 8

Step-by-step explanation:

<u>Step 1:  Distribute</u>

-1/3(6x + 15) - 3

-6/3x - 15/3 - 3

-2x - 5 - 3

-2x - 8

<u>Step 2:  IF NEEDED SOLVE FOR X</u>

-2x - 8 + 8 = 0 + 8

-2x / -2 = 8 / -2

x = -4

Answer:  x = -4 and -2x - 8

5 0
2 years ago
Kaleb rode his bike at a rate of 10 mph for 2 hours. How far did he ride?
Westkost [7]
20 miles! :)


Good luck! Please make me brainliest if I was correct!
7 0
3 years ago
Read 2 more answers
What is the density of an object having a mass of 25 g and a volume of 8.0 cm cubed
weqwewe [10]

Answer:

3.125 g/cm³.

Step-by-step explanation:

The formula for density/mass/volume is d = m/v, where d is density in grams per cm cubed, m is in grams, and v is in cm cubed.

In this case, m = 25 and v = 8.0.

d = 25 / 8.0

d = 25 / 8

d = 3.125.

So, the density of the object is 3.125 g/cm cubed.

Hope this helps!

6 0
3 years ago
PLEAS HELP FAST !!<br><br> solve the equation below. please include the steps. <br><br> x^2+8x+15=0
Nataliya [291]
(x + 5)(x + 3)
x+5=0, solve it and you get -5.
x+3=0, solve it and you get -3.

The answers are -5 and -3.
4 0
3 years ago
Read 2 more answers
How many decameters are in 14 meters?
Goshia [24]
1.4 decameter because a decameter equals to meter divided by 10
4 0
3 years ago
Other questions:
  • What is the independent variable?
    7·1 answer
  • a survey of 1,000 people was done bu the new York times. 80% of the people did not know the name of their representative in Cong
    12·2 answers
  • You run one lap around a mile track every 8 minutes. Your friend runs around the same track every minute. You both start at the
    14·1 answer
  • Can I get help to get this please!?
    8·2 answers
  • Determine the decision criterion for rejecting the null hypothesis in the given hypothesis test; i.e., describe the values of th
    7·1 answer
  • Using the EXCLUSIVE definition of a trapezoid, select the TRUE statement about trapezoids.
    8·1 answer
  • 2 3/5 divided by 7/9?As a Multiplication fraction
    14·1 answer
  • Which method correctly solves the equation using the distributive property? Negative 0.2 (x minus 4) = negative 1.7
    11·1 answer
  • A chef mix his salt and pepper. If he put 2/3 cup of salt and 1/2 cup of pepper in his shaker, what is the ratio of salt to pepp
    8·1 answer
  • Evaluate ​2(L​+W) for L=8 and W=7.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!