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umka2103 [35]
2 years ago
9

Solve the following using completing the square method :

Mathematics
1 answer:
olasank [31]2 years ago
6 0

Answer:

1. x = {1.5, 0.2}  

2. x = 1

Step-by-step explanation:

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The blades of a windmill turn on an axis that is 35 feet above the ground. The blades are 10 feet long and complete two rotation
Alona [7]

Answer:

h = 10sin(π15t)+35

Step-by-step explanation:

The height of the blade as a function f time can be written in the following way:

h = Asin(xt) + B, where:

B represets the initial height of the blade above the ground.

A represents the amplitud of length of the blade.

x represents the period.

The initial height is 35 ft, therefore, B = 35ft.

The amplotud of lenth of the blade is 10ft, therefore A = 10.

The period is two rotations every minute, therefore the period should be 60/4 = 15. Then x = 15π

Finally the equation that can be used to model h is:

h = 10sin(π15t)+35

5 0
3 years ago
Read 2 more answers
What is the product of 1.38 and 2.5
Salsk061 [2.6K]

Answer:

3.45

Step-by-step explanation:

Product, meaning multiplication would just mean that you multiply these two numbers together

7 0
3 years ago
Read 2 more answers
PLEASE HELPPPP!!!!!!!
Strike441 [17]

Answer:

Subtract 4 from each side

Step-by-step explanation:

x + 4 > -8

Subtract 4 from each side

x + 4-4 > -8-4

x>-12

6 0
2 years ago
Enter the values for the highlighted variables to
LiRa [457]
I think this is right

6 0
3 years ago
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An engineer on the ground is looking at the top of a building. The angle of elevation to the top of a buliding. The angle of ele
Marysya12 [62]

\tan( \alpha )  \:  =  \:  \frac{h}{b}
\alpha  \:  =  \:  {22}^{0}
h \:  =  \: 450 \: ft
Therefore,
b \:  =  \: h \cot( \alpha )
b \:  =  \: 450  \: ft \:  \times  \:  \cot( {22}^{0} )
b = 450 ft × 2.47508685
b = 1,113.78908 ft
or,
b ≈ 1,114 ft.
6 0
3 years ago
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