Two systems of equations are shown below:System A:
6x+y=2
-x-y=-3
System B:
2x-3y=-10
-x-y=-3
Which of the following statements is correct about the two system equations?

A) The value of x for System B will be 4 less than the value of x for System A because the coefficient of x in the first equation of System B is 4 less than the coefficient of x in the first equation of System A.

B) They will have the same solution because the first equations of both the systems have the same graph.

C) They will have the same solution because the first equation of System B is obtained by adding the first equation of System A to 4 times the second equation of System A.

D) The value of x for System A will be equal to the value of y for System B because the first equation of System B is obtained by adding -4 to the first equation of System A and the second equations are identical.

Answers

Answer 1
Answer: System A:
6x + y = 2
-x - y = -3

System B:
2x - 3y = -10
-x-y = -3

Solve:
System A:
6x + y = 2
y = 2 - 6x
-x - (2-6x) = -3
-x - 2 + 6x = -3
5x = -3 + 2
5x = -1
x = -1/5
y = 2 - 6(-1/5)
y = 2 + 6/5
y = 2 + 1.2
y = 3.2     System A: x = -1/5 or -0.2  ; y = 3 1/5 or 3.2

System B:
2x - 3y = -10
2x = -10 + 3y
x = -5 + 1.5y
-x - y = -3
-(-5 + 1.5y) -y = -3
5 - 1.5y - y = -3
-2.5y = -3 - 5
-2.5y = -8
y = 3.2
x = -5 + 1.5(3.2)
x = -5 + 4.8
x = -0.2   System B: x = -0.2 ; y = 3.2

B) They will have the same solution because the first equations of both the systems have the same graph.

Answer 2
Answer:

Answer: I just took the test and got it wrong when I put B, the correct answer is C.

Step-by-step explanation:


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Answers


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The minimum monthly payment for Fern's credit card is 2.5% of her balance or $40, whichever is higher. If Fern's balance at the end of her last billing cycle was $1950, what is her minimum monthly payment?A.$48.75
B.$40.00
C.$8.75
D.$88.75

Answers

Answer:

A. $48.75.

Step-by-step explanation:

We have been given that the minimum monthly payment for Fern's credit card is 2.5% of her balance or $40, whichever is higher.

First of all let us find 2.5% of $1950.

\text{2.5\% of \$1950}=(2.5)/(100)* \$1950

\text{2.5\% of \$1950}=0.025* \$1950

\text{2.5\% of \$1950}=\$48.75

Since the minimum monthly payment will be the higher amount among 2.5% of the balance or $40. As $48.75 is higher than $40, therefore, Fern's minimum monthly payment will be $48.75 and option A is the correct choice.  

1950 * .025
48.75
A
When you do these problems, you must make sure you put this percent into decimal form before punching it into your calculator. 

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Answers

Answer:

Step-by-step explanation:

ms+mv=r --> m(s+v)=r --> m= r/(s+v)

Answer:

Step-by-step explanation:

r=−mv, s

=0, M=−

s

mv

, m∈R, v∈R

r=0, s=0, M∈R, m=0, v∈R

r=0, s=0, M∈R, m∈R, v=0

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Part B: Solve the equation in Part A for n.

Answers

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Answers

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You have to solve the equation by essentially taking out the parentheses. So you will take x, which is outside the parentheses and multiply it by each factor inside of them.


So you will multiply x with x (first term in brackets) and multiply x with 3, second term in the bracket. You will then add these two terms together.

x^2 - 3x

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Answers

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