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Wittaler [7]
2 years ago
14

Find the height of the tower.

Mathematics
1 answer:
vovangra [49]2 years ago
4 0

Answer:

1920

Step-by-step explanation:

i think sorry if wrong

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Complex root of x^2+3x+9=0
Luden [163]

\text{Quadratic formula}

ax^2+bx+c=0\\\\\Delta=b^2-4ac\\\\x_1=\dfrac{-b-\sqrt\Delta}{2a};\ x_2=\dfrac{-b+\sqrt\Delta}{2a}

-----------------------------------------------------------------------

x^2+3x+9=0\\\\a=1;\ b=3;\ c=9\\\\\Delta=3^2-4(1)(9)=9-36=-27\\\\\sqrt\Delta=\sqrt{-27}=\sqrt{(27)(-1)}=\sqrt{27}\cdot\sqrt{-1}=\sqrt{9\cdot3}i=\sqrt9\cdot\sqrt3i=3\sqrt3i

x_1=\dfrac{-3-3\sqrt3i}{2(1)}=-\dfrac{3}{2}-\dfrac{3\sqrt3}{2}i\\\\x_2=\dfrac{-3+3\sqrt3i}{2(1)}=-\dfrac{3}{2}+\dfrac{3\sqrt3}{2}i


i=\sqrt{-1}

6 0
3 years ago
Please help need this done now hurry 1 question below!! 25 points
timofeeve [1]
So we need to find the inequality, Simple! 
So we only have 5 dollars. That we cannot change. 
But the snadwich, however, we can change how much we buy. But this problem is asking us how many we can buy. So that is an x. So far, we have 2.25x.
Then we have to use the inequality sign 'less than or equal to' because we can buy less or equal to 5 dollars. 

So the equation is 2.25x \leq 5
Then we solve by isolating the x. We divide 2.25 both sides then we get x \leq 2
5 0
3 years ago
The arena wants to estimate the previous two month’s ticket-sale income. in total, 71,115 people attended different events at th
OleMash [197]
There was a total of 71,115 people who attended the different  events in the arena for the past two months,

The estimated average ticket price is $ 21.15.

We need to solve for the estimated arena's ticket sale income and the solution is shown below:
Ticket Sale Income = 71, 115 * $21.15
Ticket Sale Income = $1,504,082
3 0
3 years ago
How many variables can there be ?
Yakvenalex [24]

Answer:

Step-by-step explanation:I am pretty sure that there can be as much as possible depending on how it is written in the word problem.

5 0
3 years ago
For what values of x will the result of 5x be greater than 1
SSSSS [86.1K]
Anything greater than (1/5) that is positive

Ex. (1/4), (1/3), (1/2), 1, 2, 3, 4, 5
6 0
3 years ago
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