Which equation shows the substitution method being used to solve the system of linear equations?x + y = 6
x = y + 5

A.
x + y = y + 5

B.
x + (y + 5) = 6

C.
x = (x – 6) + 5

D.
(y + 5) + y = 6

Answers

Answer 1

Answer: The equation
(y + 5) + y = 6
shows the substitution method being used to solve the system of linear equations. So the correct option among all the options given in the question is option "D".
For a better explanation, let us first write down the two equations given in the question.
x + 5 = 6
and
x = y + 5
Now the thing that has been done is that the value of x in the first equation has been replaced by the value of x that is given in the second equation. this is actually the substitution method of solving equations.

Answer 2

Answer: Your answer is D. You're welcome ;-) (Not trying to sound sarcastic, just I wanted to say you're welcome now than never)

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Evan buys 2 CDs. $1.49 is added to the total price which is the 5% sales tax. What is the cost for each of the CDs?

Answers

In the given question, there are several information's that are of great importance. It is by using these information's the correct answer can be determined. It is already given that the amount of sales tax is $1.49 and the percentage of sales tax is 5%. Now it is important to firstly determine the total price of 2 CDs and then determine the price of 1 CD.
Let us assume that the cost of 2 CDs = x
Then
5x/100 = 1.49
5x = 1.49 * 100
5x = 149
x = 149/5
= 29.8
So the cost of 2 CDs is $29.8.
Now
The cost of each CD = (29.8/2) dollars
= 14.9 dollars
So the cost of each CD is $14.9.

Please help me thank you

Answers

up the ramp because the ramp has a steeper angle than the hill...

What is 40/7 as a mixed number

Answers

40/7_5_____7| 40-_35_____540/7 = 5 5/7

the answer is 5 5/7 okay

Translate the following into an algebraic expression: a The number that is 40% more than five more than a number a.

Answers

Answer:

x = a + 8

Step-by-step explanation:

x = The number that is 40% more than five more than a number a.

x = 40% more than 5 (plus a)

5 * 0.6 = 3

5+3 = 8

x = a + 8

The answer is x=8+9.

A cup of broth can have 870 milligrams of salt, which is 30% of the recommended daily allowance. What is the recommended daily amount?

Answers

If 870mg is 30% of recommended daily amount, then we can set up the equation:
870 = 0.30 * x (where x is the recommended amount)
870 / 0.3 = x
x = 2900mg

Therefore the recommended daily amount is 2900mg of salt

Answer:

2900 milligrams

Step-by-step explanation:

I had to do it and I got it right.

Solve the equation 9x +6=3 what is x