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vlabodo [156]
3 years ago
6

Use the substitution method to solve each linear system. 4x - 3y = -13,-2x + y = 4

Mathematics
1 answer:
Contact [7]3 years ago
8 0

Answer:

The solutions to the system of equations are:

x=\frac{1}{2},\:y=5

Step-by-step explanation:

Given the system of the equations

\begin{bmatrix}4x-3y=-13\\ -2x+y=4\end{bmatrix}

Isolate x for for 4x-3y=-13

4x-3y=-13

4x=-13+3y

Divide both sides by 4

x=\frac{-13+3y}{4}

substitute y=5

x=\frac{-13+3\cdot \:5}{4}

x=\frac{1}{2}

The solutions to the system of equations are:

x=\frac{1}{2},\:y=5

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Sholpan [36]

Grab your calculator and enter 16231 then  the divide key then 23 and finally = or exe.

you should get  705.696 to nearest thousandth.

7 0
3 years ago
Read 2 more answers
List the next nine multiples of each number . Find the common multiples
Bad White [126]
6. Multiples of 3- 6,9,12,15,18,21,24,27,30
Multiples of 9- 18,27,36,45,54,63,72,81,90
Common Multiples- 9 and 18
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Hope this helps 
5 0
3 years ago
Dora has 10 seashells and plans to add 2 shells every week. Jerri has 4 seashells and plans to add 5 shells every week. Which sy
Mariulka [41]

Answer:

Let x represents the week and y represents the seashells

As per the statement:

Dora has 10 seashells and plans to add 2 shells every week.

"2 shells every week" means 2x

⇒y = 10 + 2x

It is also given, Jerri has 4 seashells and plans to add 5 shells every week.

"5 shells every week" means 2x

⇒ y = 4 + 5x

The system of equation would be used:

y = 10 + 2x

y = 4 + 5x

Since, the girls have the same number of seashells

⇒10 + 2x = 4 + 5x

Subtract 4 from both sides we get;

6 + 2x = 5x

Subtract 2x from both sides we get;

6= 3x

Divide by 3 both sides we have;

x = 2 weeks.

Therefore, the number of weeks would it be before the girls have the same number if seashells is, 2 weeks.

3 0
3 years ago
Solve the system of equations and choose the correct answer from the list of options d+e =12 -d+e=-8
Svetllana [295]
D + e = 12
-d + e = -8
---------------
2e = 4
e = 2

d + e = 12
d + 2 = 12
d = 10

Answer: (10,2)
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3 years ago
I NEED HELP ASAP!!!!!​
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Answer:

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