A difference of squares must be a binomial, so we want two terms. This rules out the third and fourth options.
If we look at the first two, we must check that both terms are perfect squares.
Look at the first one: is a perfect square (it's ), but is not a perfect square, because 10 is not a perfect square.
On the other hand, if we look at the second option, is the square of , and is clearly the square of . So, this is the difference of two squares.
Answer:
17. C 60°
18. D 121°
Step-by-step explanation:
The external angle is half the difference of the intercepted arcs.
17. (161° -41°)/2 = 60°
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18. (? -59°)/2 = 31°
? = 59° +2(31°) = 121°
<span>The axis of symmetry of the quadratic function has the value of (-b/2a)
As b=0, then </span><span>the axis of symmetry is (x=0)</span>
<u>Answer:</u>
4.5 foot is needed for a unit dozen bird house
<u>Explanation:</u>
Given Tina saw ¾ foot of wooden trim is being used for first 1/6 dozen bird houses
Therefore, we can write as,4
1/6 dozen = ¾ foot
For 1 dozen bird houses, we have to use the unitary method
1/6 dozen = ¾ foot
Therefore, 1 dozen or unit dozen =
1 dozen = ¾ * 6 = foot = 4.5 foot
Therefore, 4.5 foot is needed for a unit dozen bird house
Answer:
Step-by-step explanation:
Each side=6 so square.