Answer:
C. 309 cm2
Step-by-step explanation:
A=2(1+sqr2)a^2
A=2(1+sqr2)8^2
≈309.01934
Answer: 
Step-by-step explanation:
It is important to remember the following:
In this case you can observe in the figure that "x" is an Angle formed by two chords, therefore, you can find its value applying the formula.
Therefore, the value of "x" is this:
<u>Answer:</u>
<u>ratios equivalent to 1/3=2/6,3/9</u>
<u></u>
<u>Step-by-step explanation:</u>
<u></u>
<u>Double number line is a diagram used when. quantities have different units.</u>
<u></u>
<u>It shows each of the quantities on its own number line with corresponding pairs of values lined up.The values of each number line are not the same unless there is a 1:1 ratio between them.</u>
<u></u>
<u>some ratios equivalent to 1:3 are;</u>
<u></u>
<u>2:6,3:9,4:12,5:15,6:18,7:21,etc</u>
Answer:
(x+5)^2=81 would be correct
Step-by-step explanation:
solution (if you want it)
x² + 10x + 25 = 81
x² + 10x - 56 = 0
(x + 14)(x - 4) = 0
x = 4, x = -14
