Which of the following correctly shows the steps to solve this equation?
Step 1: 6x − 10 = 1; Step 2: 6x = 11
Step 1: 6x − 5 = 1; Step 2: 6x = 6
Step 1: 5x − 3 = 1; Step 2: 5x = 4
Step 1: 5x − 7 = 1; Step 2: 5x = 8
The option that shows the steps to solve the given equation is A) and this can be determined by using the arithmetic operations.
Given :
Linear Equation -- 2(3x − 5) = 1
The following steps can be used in order to evaluate the given linear equation:
Step 1 - The arithmetic operations can be used in order to evaluate the given linear equation.
Step 2 - Write the given linear equation.
2(3x − 5) = 1
Step 3 - Multiply 2 by (3x - 5) in the above equation.
6x - 10 = 1
Step 4 - Add 10 on both sides in the above expression.
6x - 10 + 10 = 1 + 10
6x = 11
Step 5 - Divide both sides by 6 in the above equation.
x = 11/6
From the above steps, it can be concluded that the correct option is A).
For more information, refer to the link given below:
6x + 2y = 22
Which of the following steps could be used to solve by substitution?
6x + 2(−2x + 1) = 22
−2x + 1 = 6x + 2y
6(−2x + 1) + 2y = 22
6(y = −2x + 1)
The steps that could be used to solve by substitution is:
6x + 2(−2x + 1) = 22
Substitution method--
The method of substitution states that from a equation the value of one variable is substituted in form of the other variable into the other equation.
From the first equation we have the value of y in terms of x as:
y = -2x + 1
Also, we have equation (2) as:
6x + 2y = 22
Hence, on putting the value of y we have:
6x+(-2x+1)=22
The answer is A
Because this where you gonna start your substitution
Select one:
a. Vertex: (0, 6)
Axis of symmetry: x = 0
b. Vertex: (6,0)
Axis of symmetry: x = 6
c. Vertex: (0, -6)Axis of symmetry: x = 0
d. Vertex: (-6, 0)
Axis of symmetry: x = -6
a2 + 4a + 16
a2 + 14a + 49
a2 + 15a + 75
a2 + 26a + 169
The exactly two answers are correct are a² + 14a + 49 and a² + 26a + 169.
The condition for the perfect trinomials is if the coefficient of a² = 1 and If you divide the middle number coefficient by 2 and you square it you get the last term.
For all the options, the coefficient of a² = 1.
a² + 4a + 16.
Coefficient of a = 4.
4/2 = 2
2² = 4, this does not equal the last term so it is not a perfect square trinomial.
a² + 14a + 49.
Coefficient of a = 14.
14/2 = 7
7² = 49, this is equal to the last term so it is a perfect square trinomial.
And the perfect square is (a +7)²
Similarly, if you test the last option.
a² + 26a + 169.
Coefficient of a = 26.
26/2 = 13
13² = 169, this is equal to the last term so it is a perfect square trinomial.
And the perfect square is (a +13)²
The only two options are: a² + 14a + 49 and a² + 26a + 169. Other options do not pass this test.
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