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
nevsk [136]
3 years ago
10

Need some math help please!

Mathematics
2 answers:
Harrizon [31]3 years ago
3 0
The answer is x=-3 and y=13
joja [24]3 years ago
3 0
OptionD is the answer
3x + y =4
-2x-y=-7 (Changing to minus)
-----------------
1x=-3
=>x=-3
Now to find y ,just substitute the value of x in any one of the equations,
Thus, we get ,
3x+y=4
=>3*-3+y=4
=>-9+y=4
=>y=4+9
=>y=13


=>(-3,13) is the answer
Hope this helps you.!!
You might be interested in
What do you simplify 16/18 to
Verizon [17]
16/18 simplified is 8/9. 
Here is the work for it.
16/2=8
18/2=9
5 0
3 years ago
Find the surface area
Svetllana [295]
I found it!!!!!!!!!!!!!!!!
8 0
3 years ago
PLEASE PLEASE PLEASE HELP ME!!!!!!!!!!!!!
k0ka [10]

Answer:

c

Step-by-step explanation:

the graph has a y intercept of (0, -4) and a slope of 3

the equation is y = 3x - 4

4 0
3 years ago
Bill wants to make 10Lcof a 30% saline solution by mixing together a 60% saline solution and a 10% saline solution. How much of
erastovalidia [21]

10 L of 30 % saline solution can be formed by mixing 4 L of 60 % saline solution and 6 L of  10 % saline solution.

Step-by-step explanation:

Let x be the number of liters of 60% saline solution

Now we require 10 L of 30% saline solution.

Liter soln %  liters  saline %  

30 %                 10        0.3  

60 %                   x        0.6

10 %                  10-x      0.1

Now forming the algebraic equation,

0.6x + 0.1 (10-x) = 10 (0.3)

0.6x + 1 - 0.1 x  = 3

0.5 x = 2

x = 4 ( 4 l of 60 % solution is required. So 10 % saline solution required is 10 - 4 = 6 L).

Hence, 10 L of 30 % saline solution can be formed by mixing 4 L of 60 % saline solution and 6 L of  10 % saline solution.

6 0
3 years ago
Read 2 more answers
<img src="https://tex.z-dn.net/?f=4a%20-%20%283a%20-%202b%29%20%2B%203a" id="TexFormula1" title="4a - (3a - 2b) + 3a" alt="4a -
MAVERICK [17]

4a - (3a - 2b) + 3a

4a - 3a + 2b + 3a

a + 2b + 3a

4a + 2b

2.(2a + b)

4 0
3 years ago
Other questions:
  • The length of rectangle is 1 meter less than it's width . The area of the rectangle is 42 square meters. Find the dimensions of
    14·1 answer
  • How to find marginal profit function calculus?
    8·1 answer
  • The function f(x) = 800(1.09)4x shows the growth due to interest that Jim earns on an investment. The steps to calculate an equi
    7·2 answers
  • Use long division to write 7/8 as a fraction
    13·1 answer
  • In which of the following situations would someone have to pay a gift tax?
    7·2 answers
  • Complete the first step in the solution.<br><br> 4x=24
    10·2 answers
  • The sides of a triangle are in the ratio 2:3:4 and the longest side is 20 cms longer than the shortest side. Compute the length
    13·1 answer
  • A DVD originally costs $16. The discounted price is $12. What is the
    12·2 answers
  • The HCF of 2 numbers is 18 and and their product is 1620. Find the LCM of the numbers
    15·1 answer
  • Becca’s dog-walking business started with 1 dog. By the end of the first month, she was walking 2 additional dogs per month. The
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!