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meriva
3 years ago
10

ONE PROBLEM PLEASE HELP I DONT GET THIS AT ALL

Mathematics
1 answer:
r-ruslan [8.4K]3 years ago
5 0

Answer:

10%

0.10

1/10

Step-by-step explanation:

100% = 10/10

when you subtract 9/10 from 10/10 you get 1/10=10%

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Solve 2cos ²y -siny -1=0 for 0° ≤y≤360°
natima [27]

 

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.

\displaystyle\bf\\\boxed{\bf sin\,y=x}\\\\2x^2+x-1=0\\\\x_{12}=\frac{-b\pm\sqrt{b^2-4ac}}{2a}=\frac{-1\pm\sqrt{1-4\cdot2\cdot(-1)}}{2\cdot2}=\\\\=\frac{-1\pm\sqrt{1+8}}{4}=\frac{-1\pm\sqrt{9}}{4}=\frac{-1\pm3}{4}\\\\x_1=\frac{-1+3}{4}=\frac{2}{4}=\boxed{\bf\frac{1}{2}}\\\\x_2=\frac{-1-3}{4}=\frac{-4}{4}=\boxed{\bf-1}\\\\sin\,y=\frac{1}{2}\\\\\boxed{\bf y_1=\frac{\pi}{6}~~or~~(30^o)}\\\\\boxed{\bf y_2=\frac{5\pi}{6}~~or~~(150^o)}\\\\sin\,y=-1\\\\\boxed{\bf y_3=\frac{3\pi}{2}~~or~~(270^o)}

 

 

5 0
3 years ago
Zach is filling his dogs bowl with water. Is it reasonable to say that Zach will need about 4 gallons of water?
xeze [42]
No, that would not be reasonable to say.

If you were filling some buckets, you could say 4 gallons, but we’re talking about a bowl and at the most that will take just a few cups.

I hope this helps and please let me know if you need further explanation!
~Brooke❤️
3 0
3 years ago
Read 2 more answers
Is this correct if not can someone give me the answer I will mark u brilliant
Mila [183]

Answer: the first one is 735.75

the second one is 69

Step-by-step explanation:

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4 0
3 years ago
Read 2 more answers
Find the value of the variable and GH if H is between G and I. GI=5b+1, HI=4b-5, HI=7
fgiga [73]

Answer:

The value of the variable 'b' is 3 and GH is 9

Step-by-step explanation:

Given:

GI = 5b+1\\\\HI=4b-5\\ \\HI=7

H is between G and I

Such that G - H - I

To Find:

GH = ?

Solution:

On Substituting HI we get

4b-5=7\\\\\therefore 4b=7+5=12\\\\b=\dfrac{12}{4}=3

Substituting 'b' in HI and GI we get

HI=4\times 3 -5=12-5=7\\\\\therefore HI = 7

GI=5\times 3 +1=15+1=16\\\\\therefore GI = 16

Now, by Line Addition Property we get

GI=GH+HI

Substituting 'HI' and 'GI' we get

16=GH+7\\\\\therefore GH=16-7=9

The value of the variable 'b' is 3 and GH is 9

4 0
3 years ago
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