A^2 - 11^2 = ( a - 11 )( a + 11 ), because we have the formula d<span>ifference of squares, a^2 - b^2 = ( a - b )( a + b );</span>
Answer:
28 cm
Step-by-step explanation:
If the shape is a square, all the sides are equal. To find the area you multiply the length by the width. Since the area is 49 centimeters, find the square root of 49 to find the length of the length and the height of the square, which is 7. To find perimeter, you add the lengths of all the sides of the square. 7+7+7+7=28.
Answer:
am a bit lost
Step-by-step explanation:
how much is the tax? that my be able for me to help you.
Answer: A
Step-by-step explanation:
Let's rewrite the numbers inside to see if we can take some out.
For example; 12 is 3 x 4 and 4 is 
which means a 2 will come out of the root.
We can also rewrite 18 as 9 x 2 and 9 can be rewritten as 
which will make the 3 come out.
60 can be rewritten as 15 x 4 and 4 can be rewritten as which will make the 2 come out.
Let's rewrite this.
When a number comes out of a root, it has to be multiplied by the number that is already outside.
Solve and eliminate parentheses.
