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mote1985 [20]
3 years ago
11

a radio transmission is 515 feet tall. a guy wire is to be attached (6)feet from the top and is to make an angle of 22 degree wi

th the ground. how many feet long should the guy wire be? round your answer to the nearest foot and do not write unit.
Mathematics
1 answer:
Gnom [1K]3 years ago
7 0
Draw a graph of 515 length then then make an angle of 22 width that should get you your answer. Hope this helps!
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Given a rectangle with a perimeter of 24 inches, why dimensions maximize the area?
Pepsi [2]

Answer:

The dimensions are 6 by 6

Step-by-step explanation:

Calculus answer:

2x +2y= 24

xy= A

2x=24-2y

x=12-y

(12-y)(y)= 12y- y^2

the Derivative is = 12-2y

Then set that equal to zero 0=12-2y

-12=-2y

y=6

Confirm that 6 is a maximum by using a wiggle graph

wiggle graph -∞<---inc--6---dec-->∞

6 is a maximum

plug into original equation

2x + 2(6)=24

2x+12=24

2x=12

x=6

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

y=6

x=6


     



5 0
3 years ago
Find the exact value of tan( cos^-1 ( -5/13))
trasher [3.6K]

Answer:

-¹²/₅  

Step-by-step explanation:

Let cos a = -⁵/₁₃

Then tan a = sin a/cos a

= [√(1 - cos²a)]/cos a

= {√[1 - (-⁵/₁₃)²]}/(-⁵/₁₃)

= -[√(1 - ²⁵/₁₆₉)] × ¹³/₅

= -[(√(¹⁴⁴/₁₆₉ )] × ¹³/₅

= -¹²/₁₃ × ¹³/₅

= -¹²/₅

tan(arccos (-⁵/₁₃)) = -¹²/₅

The diagram shows the 2nd  quadrant of a circle with radius 13, cos a = -⁵/₁₃, and tan a = ¹²/₍₋₅₎ = -¹²/₅.

4 0
3 years ago
An ostrich can run at a rate of 50 miles in 60 minutes.At this rate,how long would it take an ostrich to run 15 miles?
just olya [345]
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3 0
3 years ago
Can someone help pls​
finlep [7]
It’s C like the guy said
4 0
3 years ago
What number is 30% of 68?
natka813 [3]
30%of 68 = 30/100*68= 3*68/10=204/10=20.4
6 0
3 years ago
Read 2 more answers
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