Answer:
This problem has two number solutions. The solutions are x = ±√ 1.500 = ± 1.22474.
Step-bystepexplanation:
Step 1 :
Equation at the end of step 1 :
0 - ((0 - 2x2) + 3) = 0
Step 2 :
Trying to factor as a Difference of Squares :
2.1 Factoring: 2x2-3
Theory : A difference of two perfect squares, A2 - B2 can be factored into (A+B) • (A-B)
Proof : (A+B) • (A-B) =
A2 - AB + BA - B2 =
A2 - AB + AB - B2 =
A2 - B2
Note : AB = BA is the commutative property of multiplication.
Note : - AB + AB equals zero and is therefore eliminated from the expression.
Check : 2 is not a square !!
Ruling : Binomial can not be factored as the
difference of two perfect squares
Equation at the end of step 2 :
2x2 - 3 = 0
Step 3 :
Solving a Single Variable Equation :
3.1 Solve : 2x2-3 = 0
Add 3 to both sides of the equation :
2x2 = 3
Divide both sides of the equation by 2:
x2 = 3/2 = 1.500
When two things are equal, their square roots are equal. Taking the square root of the two sides of the equation we get:
x = ± √ 3/2
The equation has two real solutions
These solutions are x = ±√ 1.500 = ± 1.22474
Answer: The sides of the triangle on the drawing should be 6 inches, 8 inches, and 9 inches.
Step-by-step explanation:
Given: A triangle with sides 12 feet, 16 feet, and 18 feet on a drawing where 1 inch = 2 feet.
Then, 1 feet of original triangle = inch on drawing.
Now, the sides of the triangle on the drawing are:-
12 feet =
12 feet =
12 feet =
Hence, the sides of the triangle on the drawing should be 6 inches, 8 inches, and 9 inches.
Answer:
Reflection about the vertical line x = 2.5 inches will map the square unto itself
Step-by-step explanation:
The given parameters are;
The area of the square = 25 in²
The orientation of the sides of the square are horizontal and vertical
Therefore, we have;
The area, A, of the square given by the following relation;
A = Side²
A = 25 in²
Therefore;
The area of the square = 25 = side²
The length of the sides of the square = √A = √25 = 5
The length of the sides of the square = 5 inches
The reflection of a figure that maps the figure unto itself is a reflection along the line of symmetry
One of the line of symmetry that divides the square into two similar halves is the vertical straight that passes half way through the horizontal side, which is the point 2.5 inches to the right on the x-axis with the coordinates (2.5, 0)
Therefore, reflection about the line x = 2.5 inches will map the square unto itself.
B.(8, 0) and (–4, 0)
C.(2, 0) and (–1, 0)
D.(–2, 0) and (1, 0)
Answer:
A
Step-by-step explanation: b is wrong a is right I took the test