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Mashcka [7]
4 years ago
7

Someone please help with these (all)

Mathematics
1 answer:
zlopas [31]4 years ago
6 0

Answer:

boy your going to fail if you dont ask for help


Step-by-step explanation:


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The cross section of a parabolic reflector has a vertical axis of symmetry with its vertex at (0,0) . The focus of the reflector
Paha777 [63]

Answer:

The depth of the reflector is 0.84 feet

Step-by-step explanation:

<em>(See the figure below)</em>

The equation of a parabola centered at the origin with an axis of symmetry on y-axis is:

x^{2}=4py (1)

With p the distance from the origin to the focus using p=6, the equation (1) of the parabola becomes:

x^{2}=4(6)y=24y (2)

Note that the point B is on the parabola, so this point should satisfy the parabola equation (2) that allow us to use the value x=4.5 to find the y value associated to it, that it is the depth (h) of the reflector:

(4.5)^{2}=24y, solving for y

y=\frac{(4.5)^{2}}{24}\approx0.84\,ft

4 0
4 years ago
What is the measure of an angle if it is 90 less than 5 times its own compliment
stepladder [879]

Answer:

The angle is 30.  It's complement is 60.

Step-by-step explanation:

Complementary angles add up to 90.

x + (5x-90) = 90

6x = 180

x = 30

3 0
3 years ago
Read 2 more answers
4 1/3<br> What is the value of this equation?
sweet [91]

Answer:

4.33

Step-by-step explanation:

1/3=0.33 recuring

4 just eqauls 4

so you add 0.3 recuring to 4

and depending on significant figures it wants you round it ill assume it wants 3 and go 4.33

5 0
3 years ago
How do you write 5/9 as a percentage
Schach [20]
Ok divide the numerator by the denomitator and ur answe wil be 55.5

6 0
4 years ago
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A ticket to see your favorite baseball team costs ​37.26$. That price decreases by ​0.28$ for every game lost during the regular
galben [10]

The equation that represents the given situation is required.The cost of the ticket after L losses is a. Initial cost of the ticket = $49.64Price decrease per game lost = $0.41Number of games lost = LMoney lost after L losses is So, the cost of the ticket after L losses would be the initial cost of the ticket minus the money lost after L losses.The cost of the ticket after L losses is a. 

5 0
1 year ago
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