I assume you meant to insert a picture or question but “x” is a variable used in math, mainly in algebra
"Isolate the constant by adding 7 to both sides of the equation."
This step separates the non-squareable 7 and the squareable
.
"Add 9 to both sides of
to form a perfect square trinomial while keeping the equation balanced."
After separating the non-squareable, add the number which makes the first or left side a perfect square trinomial. The formula to find the number is:
.
When we plug the values:
Simplify:
"Write the trinomial
as
squared."
When you factor
, you will get
.
"Use the square root property of equality to get
."
The 16 is coming from the part when we add 9. We needed 9 on the left side for a perfect square, but to protect the balance of the equality, we need to add 9 to the right side too. When we add 7 and 9, we got 16, and that is where it came from.
"Isolate the variable x to get solutions of -1 and 7."
To isolate x we branched the plus-minus sign:
Answer:
the answer is b) (10.67,11.93)
Step-by-step explanation:
hope this helps
208.81 square centimeters of aluminium are needed
<em><u>Solution:</u></em>
Given that,
Radius = 3.5 cm
Height = 6 cm
We have to find the square centimeters of aluminum needed
So we have to find the surface area of cylinder
<em><u>The surface area of cylinder is given by formula:</u></em>
Where "r" is the radius and "h" is the height of cylinder
<em><u>Substituting the values we get,</u></em>
Thus 208.81 square centimeters of aluminium are needed
Answer:
The perimeter is 8 units
Step-by-step explanation:
The vertices of the given rectangle are: A(-6,-4) B(-4, -4), C(-4, -2), and D(-6,-2)
We use the absolute value method to find the length around the edges of the rectangle.
|AB|=|-6--4|=|-2|=2
|BC|=|-4--2|=|-2|=2
The perimeter of the rectangle is
P=2(w+l)
Substitute the dimensions to get:
P=2(2+2)
P=2(4)
P=8 units.
The perimeter is 8 units.