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Salsk061 [2.6K]
3 years ago
9

Find Y

Mathematics
2 answers:
djverab [1.8K]3 years ago
8 0

Answer:

\sin(30)  =  \frac{y}{2 \sqrt{2} }  \\  \\  <  =  >  \frac{1}{2}  =  \frac{y}{2 \sqrt{2} }  \\  <  =  > y =  \frac{2 \sqrt{2} }{2}  \\  \\  <  =  > y =  \sqrt{2}

enot [183]3 years ago
4 0

Answer:

y= √2

Step-by-step explanation:

sin 30°= y/2√2

1/2= y/2√2

y=√2

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10. A wire is of length 264 cm. It is bent into a circle. What is the radius of the circle so obtained. If it
Luden [163]

Answer:

r = 42 --- radius

L = 66 -- Length of the square

Step-by-step explanation:

Given

Length = 264cm

Solving (a): Find the radius (when it formed a circle).

The length of the wire represents the circumference (C) of the wire.

So, we have:

C = 2\pi r

Make r the subject

r = \frac{C}{2\pi}

Substitute 264 for C

r = \frac{264}{2\pi}

r = \frac{132}{\pi}

Take \pi as 22/7

r = \frac{132}{22/7}

r = \frac{132*7}{22}

r = \frac{924}{22}

r = 42

Solving (b): Find the side length (when it formed a square).

The length of the wire represents the perimeter (P) of the wire.

So, we have:

P = 4L

Make L the subject

L = \frac{1}{4}P

Substitute 264 for P

L = \frac{1}{4}*264

L = 66

4 0
3 years ago
HELPP PLEASE ILL MAKE YOU THE BRAINIEST Find the area of the rhombus
iogann1982 [59]

Answer:

D1×D2/2sq

445×5= 225

225/2

=112.5

5 0
2 years ago
True or False: If circumference of a circle is 12*3.14, then its area is 36*3.14.
strojnjashka [21]

Answer: true

Step-by-step explanation:

8 0
4 years ago
Steven hiked 3/8 mile in 1/4 hour. How fast did he hike, in miles per hour?
frosja888 [35]
It's the first option, 3/23
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Raul has 5 boxes of golf balls. Each box has y golf balls. Raul's father gives him 8 more golf balls. How many golf balls does R
DiKsa [7]
5y+8 

When you figure out what y is you plug it in and do PEMDAS. 
But if it doesn't tell you what y is then the equation I wrote is the answer.
7 0
3 years ago
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