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fenix001 [56]
2 years ago
8

Write and solve a problem involving money that can be solved with a multiplication equation

Mathematics
1 answer:
alexandr1967 [171]2 years ago
4 0

Answer:


Step-by-step explanation:


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Solve the simultaneous equations
Contact [7]

Answer:

The solution for given system of equations is: x = 6 and y = 3

Or

(6,3)

Step-by-step explanation:

Given equations are:

3x+4y=30\ \ \ Eqn\ 1\\3x-y=15\ \ \ \ Eqn\ 2

There are three methods to solve simultaneous equations

  1. Elimination
  2. Substitution
  3. Co-efficient method

We will use the elimination method as the coefficients of x in both equations are already same

Subtracting equation 2 from equation 1

3x+4y - (3x-y) = 30-15\\3x+4y-3x+y = 15\\5y = 15\\\frac{5y}{5} = \frac{15}{5}\\y = 3

Putting y = 3 in equation 2

3x-3 = 15\\3x = 15+3\\3x = 18\\\frac{3x}{3} = \frac{18}{3}\\x =  6

Hence,

The solution for given system of equations is: x = 6 and y = 3

Or

(6,3)

7 0
3 years ago
What is the only solution of 2x2 + 8x = x2 – 16?
Irina18 [472]

Answer:

the only sulition is 900000000000000000000000000000000000ueuy91

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
What are the coordinates of point f?<br> A) (7,5)<br> B) (7,-5)<br> C) (-5,7)<br> D) (5,-7)
aliina [53]
Ahh, point F.  I know where point F is.  Its right over there on the graph.

No, im kidding.

Please provide a graph
5 0
2 years ago
Solve the equation 2x + 4 - 9 Explain the steps<br> and properties you used.
Verizon [17]

Answer:

2x - 5

Step-by-step explanation:

2x + 4 - 9

the 2x gonna stay

so you take 4 - 9 = -5

so the answers gonna be 2x - 5

bc the 5 is negative so you gonna subtract

I hope you understand my english...

6 0
2 years ago
2. What is the value of 6x – 3y if x = 5 and y = 1
vesna_86 [32]

Step-by-step explanation:

x=5,y=-1

6(5)-3(-1)=30+3=33

answer G .33

4 0
3 years ago
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