Answer:
9x^2 - 3x - 30
Step-by-step explanation:
3x l 5
3x l 9x^2 l 15x
l ----- l ------
-6 l -18x l -30
Answer
<u>2</u><u>.</u><u>5</u><u>6</u><u>m</u>⠀
Step by Step explanation:
⠀
Let AC be the 7 meters high Flagstaff
And BC be the tower
⠀
Let the height of BC = x
The height of AB will be (x + 7)m
⠀
∠ADB = 45° and ∠CDB = 15°
(as given in the question)
⠀
<u>By</u><u> </u><u>using</u><u> </u><u>trigonometry</u><u> </u><u>formula</u>

⠀
⠀
So tan 45 will be

⠀
⠀
And tan 15 will be

⠀
⠀
Using both Values of BD to find x
⠀

<u>The</u><u> </u><u>height</u><u> </u><u>of</u><u> </u><u>the</u><u> </u><u>tower</u><u> </u><u>is</u><u> </u><u>2</u><u>.</u><u>5</u><u>6</u><u>m</u>
<span>1
Written out, there are one-hundred and twenty-eight marbles. When written out, you can see that there is only 1 hundred in this number. Therefore the answer is 1</span>