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Vinil7 [7]
3 years ago
13

3. sin t + cos2 t / sin t =

Mathematics
1 answer:
Charra [1.4K]3 years ago
7 0
See the picture, please!!

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What is 0.05 repeating as a fraction ?
grin007 [14]
This is the best I got Require to make 2 equations with the same repeating part and subtract them to eliminate the repeating part.

begin by letting x = 0.5555555................. (1)

To obtain the same repeating part after the decimal point need to multiply by 10

hence 10x = 5.555555........................(2)

It is important to obtain 2 equations in x, where the recurring part after the decimal points are exactly the same.

now subtract (1) from (2) to obtain fraction

(2) - (1) : <span>9x=5⇒x=<span><span>59</span></span></span>

8 0
3 years ago
The height of a triangle is 7 ft more than its base. if the area of the triangle is 30 ft^ what is the lentgh of the base
Dmitriy789 [7]
Since the area of a triangle is in the form
area=0.5(base)(height)
height=base+7
let base=x
area=0.5(x)(7+x)
30=3.5x+0.5x^2
multiply the equation by 2
60=7x+x^2
subtract 60 from both sides
x^2+7x-60=0
(x-5)(x+12)=0
thus  x=5 or x=-12 since we are only considering positive answers
x=-12 is rejected
so base=5 and height=5+7=12
6 0
3 years ago
At a competition with 6 runners, 2 medals are awarded for first and second
insens350 [35]

Answer:

30 ways

Step-by-step explanation:

The first medal can be awarded in 6 different ways since any of the runners could have it. Once the first medal is awarded, the second medal can only be given to any of the 5 runners available.

So there are 6x5=30 different ways to award the medals

3 0
3 years ago
-4 1/2 divided by 4 written as a fraction
Semmy [17]
-1 1/2 is the answer. I'm making 20 characters.
3 0
2 years ago
Can someone explain to me multi step algebra equations? 15 points Thaaaanks~
aalyn [17]
So take 4x-2x=4                                                                                                        first combine like terms so now u have 2x=4.          now you will isolate the x to find what it equals. divide 2 from both sides so u have x=2.                                      did this help any?  

7 0
3 years ago
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